PROPAGATION AND RETESTING OF WALNUT ROOTSTOCK GENOTYPES PUTATIVELY RESISTANT TO PESTS AND DISEASES
|
|
- Rachel Thompson
- 5 years ago
- Views:
Transcription
1 PROPAGATION AND RETESTING OF WALNUT ROOTSTOCK GENOTYPES PUTATIVELY RESISTANT TO PESTS AND DISEASES Wesley P. Hackett, Gale McGranahan, Bruce D. Lampinen, Chuck Leslie, Greg Browne, Diego Bujazha, and Soussan Hirbod ABSTRACT Establishment of the field stock block of putatively disease and pest resistant rootstock genotypes was completed with the exception of 5 WIP genotypes tolerant to CLRV that will be grafted in 4 to already established California black walnut rootstocks. The tissue culture bank of high priority genotypes has been completed with the exception of (WIP5), a CLRV tolerant genotype. We have continued work to micropropagate the disease and pest resistant genotypes using improvements to the fog chamber acclimatization and greenhouse growing protocols developed during Year 1 of the project. Through October 3, we have micropropagated over 5 plantlets of genotypes in 1½ inch tree tubes. We have shown that we can keep these plantlets growing year round in a greenhouse using a daylength extension with HID lights and a Promalin spray treatment every 2 weeks. We have also shown that plantlets in 1 1/2 inch tree tubes can be greenhouse grown to a size (4-5 inches tall with 3-5 tap roots 6 inches long) large enough for transplanting to a nursery row in 3 months. Three-month-old plants can be can be induced to drop their leaves by placing them in cold storage with low light at 5 F for 3 weeks. These dormant plantlets can then be stored for up to 6 months in a cold room at 42 F. Alternatively, they can be placed outdoors in fall and winter for dormancy induction and breaking. Rooting of microshoots is the main factor that limits successful micropropagation. Some genotypes root very well (-7%) while other root considerably below the average (%). Some genotypes recalcitrant for rooting responded well to higher IBA concentrations than had previously been used while others did not. However, use of higher IBA concentrations appears to be a promising way to obtain better rooting of many of the genotypes. For the period November 2 to October 3, the average survival of all genotypes was 65% of lab-rooted plantlets that were transplanted to 1½ inch tree tubes with considerable variation between genotypes. A total of 13 hardwood cuttings were taken from 1 coppiced or tree form genotypes. Rooting percentage varied from -%. Genotype (WIP5, one which we have trouble micropropagating), a CLRV tolerant clone, rooted at nearly % and VX 211, a nematode tolerant genotype rooted at 87%. Rooting of hardwood cuttings also showed some potential (35-5% rooting) for (WIP6), (WIP3), (WIP4) and AZ25, a crown gall resistant genotype for which we have trouble micropropagating. Using methods referred to above, we now have a total of over 39 trees of 21 genotypes available for field trials in 4. We have supplied 493 plantlets of 7 genotypes in 1½ inch tree tubes to Greg Browne for Phytophthora retests during Year 2 and also have 7 plantlets of 8 genotypes in cold storage for addition Phytophthora retests during 4. Genotype RX1 was relatively resistant to P. citricola in two 3 experiments, confirming previous results with the clone. Imposing a cycle of pre-inoculation chilling, dormancy, and growth resumption on the genotypes before screening them facilitated assessment of their genetic susceptibility to the pathogen.
2 OBJECTIVES The overall goal of this research is to identify and develop methods for producing disease and pest resistant walnut rootstock clones. This goal has been pursued through the following objectives: 1. Establishment of a field stock block and tissue culture microshoot bank of putatively disease and pest resistant genotypes for retesting. 2. Development of protocols for tissue culture multiplication, rooting, acclimatization and growth of these genotypes for re-testing. 3. Development of protocols for cuttage propagation of these genotypes for re-testing. 4. Retesting of own-rooted individual genotypes for Phytophthora resistance in the greenhouse. This year, greatest effort has been placed on Objectives 2 and 4. PROCEDURES AND RESULTS Objective 1 During Year 2, establishment of the field stock block of putatively disease and pest resistant genotypes was completed with the exception of grafting 5 WIP genotypes tolerant to cherry leaf roll virus (CLRV) to already established California black walnut rootstocks. AW 269, a putatively nematode tolerant California black walnut genotype and (WIP2) (WIP4) and (WIP1), CLRV tolerant genotypes, were established in an in vitro tissue culture microshoot bank. Only (WIP5), a CRLV tolerant genotype remains to be established in the tissue culture microshoot bank. Objective 2 We have continued to micropropagate the putatively disease and pest resistant genotypes using improvements to the fog chamber acclimatization and greenhouse container growing protocols devised during Year 1 of the project. Through October 3 we have micropropagated and grown over 5 plantlets of genotypes in 1 ½ inch tree tubes. We have shown that we can keep these plantlets growing year round in a greenhouse using a daylength extension with high intensity discharge (HID) lights and a spray treatment with Promalin (a gibberellin-cytokinin product) every 2 weeks. We have also shown that plantlets in 1½ inch tree tubes can be greenhouse grown to a size (4-5 inches tall with 3-5 tap roots 6 inches long) large enough for transplanting to a nursery row in 3 months. Three-month-old plantlets can be induced to drop their leaves and go dormant by placing them in cold storage with low light at 5F for 3 weeks. These dormant plantlets can be stored for up to 6 months in a cold room at 42F. Alternatively, they can be placed outdoors in the fall and winter for dormancy induction and breaking. Survival of rooted plantlets during acclimatization and growth in the greenhouse is not the same for all of the genotypes with which we have worked. For the period November 2 through October 3 the average survival and growth of lab-rooted plantlets of all genotypes was 65%
3 of those transplanted to 1 ½ inch tree tubes (Table 1). However, as shown in Table 1, survival rate ranges from 9% down to 22% for the plantlets of the 16 genotypes planted. Even for some genotypes such as UX22 which appears to form very good to excellent number and quality of roots, survival (42%) is considerably less than the overall average (65%) and much less than the best survival (9%). We will be working on ways to improve survival of such genotypes in Year 3 of the project. To build up numbers of plants as quickly as possible, we have been rooting microshoots that fail to root in the lab, ex vitro, in the fog chamber. For the same period, these recycled, ex vitro rooted plantlets survived and grew (Table 2) at a much lower rate (44%) than the lab-rooted plantlets. However, they resulted in almost 85 additional plantlets. Rooting of microshoots is the main factor that limits the micropropagation overall. Some genotypes root very well (-7%) using the standard low concentration indolebutyric acid (IBA) root induction protocol but others do not (Table 3). Preliminary experiments during Year 2 have indicated that high IBA concentration treatments can improve rooting percentage of many genotypes including some of the genotypes that are recalcitrant for rooting (Table 3). Our results for rooting microshoots indicate that the protocol required for optimal rooting varies between genotypes. Our goal is to devise protocols that will give at least 7% rooting of microshoots of each genotype. Objective 3 Hardwood cuttings from coppiced (hedged) or tree form stock plants of (WIP5), (WIP6), (WIP2), (WIP4), (WIP3), VX 211, AW 269, AZ 25, UX 22 and Vlach were taken during the period from December 13, 2 to February 7, 3, dipped in or PPM potassium indolebutyric acid (K-IBA), stuck in Oasis rooting cubes and placed on a bottom heated rooting bed in a lath house at to 85F. A total of about 13 cuttings were stuck for the 1 genotypes. As shown in Table 4, rooting varied by genotype from to %. The genotypes with the highest rooting percentage were (WIP5), a CLRV tolerant genotype with 94 to % rooting and VX211, a nematode tolerant genotype with 73 to 87% rooting depending on K-IBA concentration. Other genotypes with moderately good rooting percentages were CLRV tolerant genotype (WIP6) and Vlach with about 5% rooting. CLRV tolerant genotypes (WIP3) and (WIP4) rooted at nearly 5% and AZ25 at about 35 % with the PPM K-IBA treatment. In general the PPM K-IBA treatment gave higher rooting percentages than the PPM K-IBA. However, the PPM K-IBA treatment delayed or inhibited outgrowth of buds. We will test PPM K-IBA during Year 3 to try to overcome this problem. Overall, rooting of hardwood cuttings looks very promising for genotype (WIP5, one for which were having trouble with micropropagation) and VX211. Rooting of hardwood cuttings also shows some promise for (WIP6), (WIP3), (WIP4) and AZ25 (a genotype for which we have trouble with micropropagation). Dieback of the stem from the terminal cut during and after rooting of cuttings is a problem that we will try to overcome during Year 3 by painting the terminal cut with asphalt emulsion.
4 Objective 4 By using the in vitro micropropagation and acclimatization and the hardwood cutting protocols along with the container growing and plantlet storage protocols we have developed during project Years 1 and 2, we now have a total of over 39 trees of 25 genotypes available for field trials of disease and pest resistance and horticultural characteristics in 4 (Table5). These consist of trees in 3-gallon deep containers, plantlets in 1 ½ inch tree tubes and trees growing in a nursery row that will be bare-rooted. The trees in 3-gallon containers have been produced from micropropagated plantlets and rooted hardwood cuttings using a drip irrigation system to deliver half strength Hoagland's solution to provide fertilizer and water as needed. For growth in 3-gallon deep containers, plants need at least 1 square foot each but could be grown in 2-gallon deep containers if drip fertigation is provided. Our plantlets and rooted cutting were transplanted to 3-gallon containers in May and many were ½ to ⅞ inch diameter and 6 to 7 feet tall by August even though the spacing was too close. We have supplied 493 plantlets of 7 genotypes in 1½ inch tree tubes to Greg Browne for Phytophthora screening during Year 2 and also have 7 plantlets of 8 genotypes in cold storage for additional Phytophthora screens during 4 (Table 6). The seven paradox genotypes propagated for retesting their resistance to Phytophthora citricola were used in two screening experiments in 3. The tests were used not only to evaluate the resistance of the selections but also to determine the effect of pre-inoculation chilling on physiological susceptibility of the plants. After rooting and acclimatization, the paradox genotypes have tendency to set a terminal bud and stop growing. This is a concern in screening, because previous greenhouse experience with walnut and other perennial crops suggests that the lack of growth may lessen physiological susceptibility to Phytophthora and complicate assessment of the underlying genetic resistance to the pathogen. Promalin sprays have helped to maintain shoot growth on walnut and other perennials, but repeated use of the hormone induced phytotoxicity on walnut in our greenhouse, and not all paradox clones responded identically to the treatments. On the other hand, taking the plants through a cycle of dormancy by exposing them to low light intensity for several weeks at 5 F, then chilling them for 3 to 6 months at 42 F induced vigorous and sustained shoot growth in all potted walnut rootstocks after they were returned to greenhouse at 7 to 9 F. One set of plants designated for the screen with P. citricola in 3 was placed in a pre-chill environment at 5F on 28 December, moved to a chilling environment (42F) on 1 February and removed May 1, providing 3 months of chilling. After returning the chilled plants to the greenhouse, all plants (chilled and non-chilled) were watered daily and fertilized 1 to 2 times per week with a complete nutrient fertilizer solution. On 3 May and 1 July, plants used in Experiments 1 and 2, respectively, were transplanted into into 2-liter pots of non-infested soil or soil artificially infested with a multiple-isolate mixture of P. citricola ( ml of infested V8 juice-vermiculite-oat substrate per liter of soil). For both experiments, six replicate blocks of two plants per rootstock were inoculated with P. citricola, while six blocks of one plant per treatment served as the control. Starting 2 weeks after transplanting and continuing for 2
5 months, all of the plants were subjected to biweekly soil flooding to facilitate infection. Between and after the floodings, the soil was watered as needed and allowed to drain freely. At the conclusion of Experiments 1 and 2 (3 September and 21 October, respectively) the root systems of the plants were washed free from the soil to determine incidence and severity of disease caused by the pathogen. The percentage of root crown length rotted was determined after measuring the total length of each root crown (from the point where major roots converged with the main plant stem to about 3 cm above the soil line) and the proportion of the length that was decayed. None of the rootstocks developed much root or crown rot in non-infested soil, but small to moderate amounts of root and crown rot developed in soil infested with P. citricola (Figs. 1-3). The cycle of chilling increased susceptibility to P. citricola in the AX1 genotype in both experiments, although this effect did not occur consistently in the other two rootstocks subjected to chilling (Fig. 1). We concluded, nevertheless that a cycle of pre-inoculation chilling, dormancy, and growth resumption should be included in all of our future screening tests with P. citricola. Overall, comparing responses of chilled, non-chilled, and averages of the two pre-inoculation treatments, genotype RX1 was marginally less susceptible than AX1 and PX1 to P. citricola (Figs. 1, 2). In Experiment 1, effects of inoculum x rootstock and inoculum x chilling treatment were significant at P=.3 and.4, respectively, and non-inoculated plants had means of.7 to 4% crown length rotted. In Experiment 2, effects of inoculum x rootstock and inoculum x chilling were significant at P=.2, and non-inoculated plants had means of to 16% crown length rotted. Among the plants that did not go through the cycle of pre-inoculation chilling, AZ2 and RX1 were relatively resistant to P. citricola (Fig. 3). Among the non-chilled plants, however, there was only a relatively weak statistical interaction of inoculum treatment x rootstock (P=.7 and P=.1 in Experiments 1 and 2, respectively). The moderate resistance of RX1 confirms results from our 1 and 2 screens, and the genotype merits continued screening and field testing. On the other hand, genotypes GZ1, JX1, and NZ1 were relatively susceptible to P. citricola in at least one of the 3 experiments, and for this reason they will not be tested further. Clones AX1, PX1, and RX1 will be retained in future screens as standards.
6 Table 1. Survival and growth of lab rooted PDS and WIP genotypes from November 2 through October 3 Genotypes Planted Alive % GZ AX RX JX NZ GZ AZ AZ VX WIP AZ AZ25R PX UX22R WIP UX Total
7 Table 2. Survival and growth of ex-vitro rooted PDS and WIP genotypes from November 2 through October 3 Genotypes Planted Alive % AZ VX JX GZ AX PX RX AZ WIP NZ UX22R AZ GZ WIP AZ25R UX Total Table 3. Percent rooting of PDS and WIP genotypes induced to root on gelled medium containing either 5 or PPM IBA Genotypes 5 IBA IBA RX1 GZ UX AX UX PX WIP2 69 AZ UX WIP3 66 AZ25 53 AZ NZ1 47 VX JX2 33 AZ GZ1 26 WIP6 19
8 Table 4. Rooting of hardwood cuttings of putatively disease resistant rootstock genotypes Genotype Cutting source K-IBA Treatment ( PPM ) Percent Rooting New Stuke Block 12 (9 /75) (WIP2) 29 (22 /75) New Stuke Block 55 (41 /75) (WIP6) 39 (29 /75) Clonal Block 1 (5 /1) 8 (4 /5) New Stuke Block 94 (47 /5) (WIP5) (5 /5 ) New Stuke Block ( /5) (WIP4) ( /5) Clonal Block 12 (3 /25) 48 (12 /25) New Stuke Block (1 /5) (WIP3) 46 (23 /5) AZ25 PDS Stock Block 2 (1 /) 36 (25 /7) UX22 PDS Stock Block ( /43) ( /43) AW269 PDS Stock Block 5 (4 /75) 8 (6 /75) VX211 PDS Stock Block 73 (11 /15) 87 (13 /15) Vlach Burchell 45 (34 /75) 55 (41 /75)
9 Table 5.Total plants available for field trials as of November 3 Selection criteria Genotypes Liners 3 gal pots Bareroot Grand Total Phytophthora AX AX AZ AZ AZ GZ GZ JX NZ PX RX UX Crown gall AZ UX Nematodes AW VX Blackline WIP WIP WIP4 5 5 WIP WIP Sunland 3 5 Vina 8 8 Tulare 1 1 Total
10 Table 6. Plants propagated for Phytophthora retests through November 3 Delivered for Cold Stored for Genotypes Phytophthora tests Future Phytophthora Tests Total AX AZ AZ GZ JX NZ PX RX WIP Total
11 Percent crown length rotted Chilled AX-1 PX-1 RX-1 AX-1 PX-1 RX-1 (Inoculated with P. citricola) (Inoculated with P. citricola) Experiment 1 Experiment 2 Not chilled Chilled Not chilled Figure 1. Relative susceptibility of three paradox clones to Phytophthora citricola and the effect of preinoculation chilling on disease severity, 3 greenhouse screens. In Experiment 1, non-inoculated plants had means of.7 to 4% crown length rotted, and effect of inoculum x rootstock and inoculum x chilling were significant at P=.3 and.4, respectively. In Experiment 2, non-inoculated plants had means of to 16% crown length rotted, and effect of inoculum x rootstock and inoculum x chilling were significant at P=.2. For both experiments, six replicate blocks of two plants per rootstock were inoculated with P. citricola, while six blocks of one plant per treatment served as controls. Vertical bars delimit 95% confidence intervals. Percent crown length rotted Non-inoculated P. citricola Non-inoculated P. citricola (Avg. of chilled and non-chilled plants) (Avg. of chilled and non-chilled plants) Experiment 1 Experiment 2 AX-1 PX-1 RX-1 AX-1 PX-1 RX-1 Figure 2. Relative susceptibility of three paradox clones to Phytophthora citricola, data combined for plants subjected to pre-inoculation chilling and non-chilled plants. In Experiments 1 and 2, effect of inoculum x rootstock significant at P=.3 and P=.2, respectively. For both experiments, six replicate blocks of two plants per rootstock were inoculated with P. citricola, while six blocks of one plant per treatment served as controls. Vertical bars delimit 95% confidence intervals. Percent crown length rotted Non-inoculated P. citricola Non-inoculated P. citricola (Non-chilled plants) (Non-chilled plants) Experiment 1 Experiment 2 AX-1 AZ-2 GZ-1 JX-2 NZ-1 PX-1 RX-1 AX-1 AZ-2 GZ-1 JX-2 NZ-1 PX-1 RX-1 Figure 3. Relative susceptibility of three paradox clones to Phytophthora citricola, data combined for plants subjected to pre-inoculation chilling and non-chilled plants. In Experiments 1 and 2, effect of inculation significant at P=.7 and P=.1, respectively. For both experiments, six replicate blocks of two plants per rootstock were inoculated with P. citricola, while six blocks of one plant per treatment served as controls. Vertical bars delimit 95% confidence intervals.
PROPAGATION AND RETESTING OF WALNUT ROOTSTOCK GENOTYPES PUTATIVELY RESISTANT TO PESTS AND DISEASES
PROPAGATION AND RETESTING OF WALNUT ROOTSTOCK GENOTYPES PUTATIVELY RESISTANT TO PESTS AND DISEASES Wesley P. Hackett, Gale McGranahan, Bruce D. Lampinen, Chuck Leslie, Diego Bujazha, and Soussan Hirbod
More informationCLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT
CLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT Gale McGranahan, Wesley P. Hackett, Bruce D. Lampinen, Chuck Leslie, Diego Bujazha, and Soussan Hirbod ABSTRACT We continued to
More informationCLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2008
CLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2008 Wesley P. Hackett, Chuck Leslie, Bruce D. Lampinen, Nicolas Manterola, Soussan Hirbod, and Gale McGranahan ABSTRACT We produced
More informationCLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2010
CLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2010 Wes Hackett, Chuck Leslie, Joe Grant, Bruce Lampinen, Gale McGranahan, Kathy Anderson, Bob Beede, Rick Buchner, Janet Caprile,
More informationBIOLOGY AND MANAGEMENT OF PHYTOPHTHORA CROWN AND ROOT ROT OF WALNUT. Greg Browne, Leigh Schmidt, Terry Prichard, and Wes Hackett
BIOLOGY AND MANAGEMENT OF PHYTOPHTHORA CROWN AND ROOT ROT OF WALNUT Greg Browne, Leigh Schmidt, Terry Prichard, and Wes Hackett Cooperators: Chuck Leslie, Diego Bujazha, Gale McGranahan, B. Westerdahl
More informationJuly-August 2007 Volume 13 / NO. 7. Walnut Rootstock Clones. page 4. PACIFIC NUT PRODUCER / July-August 2007
July-August 2007 Volume 13 / NO. 7 PACIFIC NUT PRODUCER / July-August 2007 Walnut Rootstock Clones page 4 1 Walnut Rootstock Clones What s All the Noise About? By Patrick Cavanaugh, PNP Editor Could it
More informationBIOLOGY AND MANAGEMENT OF PHYTOPHTHORA CROWN AND ROOT ROT OF WALNUT
BIOLOGY AND MANAGEMENT OF PHYTOPHTHORA CROWN AND ROOT ROT OF WALNUT Greg Browne, Leigh Schmidt, Terry Prichard, and Wes Hackett Cooperators: Chuck Leslie, Diego Bujazha, Gale McGranahan, Bill Krueger,
More informationCLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2011
CLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2011 Chuck Leslie, Wes Hackett, Reid Robinson, Joe Grant, Bruce Lampinen, Kathy Anderson, Bob Beede, Rick Buchner, Janet Caprile,
More informationWALNUT IMPROVEMENT PROGRAM 2005
WALNUT IMPROVEMENT PROGRAM 2005 Gale McGranahan, Chuck Leslie, Diego Bujazha, Soussan Hirbod, Abhaya Dandekar, Bob Beede, Bill Olson, Kathy Kelley Anderson, Joe Grant, Monica Britton, Janet Caprile, and
More informationTitle: Development of Micropropagation and Acclimation Protocols for the Commercialization of a New Bonsai Ornamaental Tree for the California Market.
Title: Development of Micropropagation and Acclimation Protocols for the Commercialization of a New Bonsai Ornamaental Tree for the California Market. Authors: Dan E. Parfitt 1, Helen M. Chan 2, and Ali
More informationA COMPARISON STUDY OF MICRO-PROPAGATED CLONAL WALNUT ROOTSTOCK GROWTH FOLLOWING APPLICATIONS OF MICROBIAL AND HUMECTANT SOIL AMENDMENTS
A COMPARISON STUDY OF MICRO-PROPAGATED CLONAL WALNUT ROOTSTOCK GROWTH FOLLOWING APPLICATIONS OF MICROBIAL AND HUMECTANT SOIL AMENDMENTS Carolyn DeBuse ABSTRACT The purpose of this trial was to evaluate
More informationUniversity of California Cooperative Extension Butte County. Walnut Notes
University of California Cooperative Extension Butte County Walnut Notes Agriculture & Natural Resources Volume 42 March 22, 2013 In this Sacramento Valley Walnut News: 2013 Walnut blight management Spacing
More informationSummary and conclusion
Summary and conclusion 6.1 Chemical sterilization of Explants Surface sterilization of explants collected from mature trees is necessary before initiation of any in vitro culture. In the present study
More information4. VEGETATIVE PROPAGATION
The Division of Subtropical Agriculture. The Volcani Institute of Agricultural Research 1960-1969. Section B. Avocado. Pg 47-54. 4. VEGETATIVE PROPAGATION a. Rooting of Leaf-bearing Cuttings - A. Kadman
More informationWalnut Notes Volume 37 May 19, 2008
University of California Cooperative Extension Butte County Walnut Notes Volume 37 May 19, 2008 In this issue: New walnut varieties from UC Davis Spring fertilization for walnuts Guidelines for care of
More informationMicro propagation of sugarcane (Saccharum officinarum L.) through auxiliary buds
Micro propagation of sugarcane (Saccharum officinarum L.) through auxiliary buds P S \Varakagoda, S Subasinghe, D L C Kumari and T S Neththikumara Department of Crop Science, Faculty of Agriculture, University
More informationVEGETATIVE PROPAGATION OF MATURE SYCAMORE. Samuel B. Land, Jr, 1
VEGETATIVE PROPAGATION OF MATURE SYCAMORE Samuel B. Land, Jr, 1 Abstract.--Techniques were tested for grafting, budding, and rooting cuttings from mature sycamore trees. Success was greater for winter
More informationREGENERATION SYSTEMS FOR PYRAMIDING DISEASE RESISTANCE INTO WALNUT ROOTSTOCKS
REGENERATION SYSTEMS FOR PYRAMIDING DISEASE RESISTANCE INTO WALNUT ROOTSTOCKS John E. Preece, Ana María Ibáñez, Quyen Tran, Dio Gunawan, Chuck Leslie, David Tricoli, and Abhaya Dandekar ABSTRACT The purpose
More informationUSE OF THE ETIOLATION TECHNIQUE IN ROOTING AVOCADO CUTTINGS
California Avocado Society 1971-72 Yearbook 55: 97-109 USE OF THE ETIOLATION TECHNIQUE IN ROOTING AVOCADO CUTTINGS Edward F. Frolich and Robert G. Platt Technician IV, Department of Agricultural Science.
More informationGROWTH AND PERFORMANCE OF OWN-ROOTED CHANDLER AND VINA COMPARED TO PARADOX ROOTED TREES
GROWTH AND PERFORMANCE OF OWN-ROOTED CHANDLER AND VINA COMPARED TO PARADOX ROOTED TREES Janine Hasey, Bruce Lampinen, Joe Grant, Samuel Metcalf ABSTRACT Two studies comparing own-rooted Chandler to nursery
More informationMORE POINSETTIAS are grown than any
Growing Poinsettias MORE POINSETTIAS are grown than any other potted flowering crop. Sales exceeded $242 million in a recent year. Nearly all the sales were associated with Christmas. The poinsettia and
More informationEstablishing new trees possible impacts of rootstock propagation method on young tree growth Ute Albrecht
Establishing new trees possible impacts of rootstock propagation method on young tree growth Ute Albrecht Southwest Florida Research and Education Center UF/IFAS, Immokalee, FL Rootstock breeding programs
More informationFurther Evaluation of Biological Control Agents for Verticillium Wilt in Peppermint. Sai Sree Uppala, Bo Ming Wu, Mark Hagman and Jim Cloud
Further Evaluation of Biological Control Agents for Verticillium Wilt in Peppermint Sai Sree Uppala, Bo Ming Wu, Mark Hagman and Jim Cloud Introduction Results of our 21 study with potted peppermint suggested
More informationCLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2012
CLONAL PROPAGATION OF WALNUT ROOTSTOCK GENOTYPES FOR GENETIC IMPROVEMENT 2012 Chuck Leslie, Wes Hackett, Reid Robinson, Morgan McMahon, Joe Grant, Bruce Lampinen, Kathy Anderson, Bob Beede, Rick Buchner,
More informationHORTSCIENCE 50(8):
HORTSCIENCE 50(8):1136 1142. 2015. Resistance to Species of Phytophthora Identified among Clones of Juglans microcarpa 3 J. regia Gregory T. Browne 2 USDA-ARS, Crops Pathology and Genetics Research Unit,
More informationSelection of mother plant. Preparation of explants. Fresh inoculation. Multiplication. Rooting. Planting out. Primary hardening. Secondary hardening
7.6 Protocol for micropropagation of banana 153 PROTOCOL FOR MICROPROPAGATION OF BANANA Joy P. P., Anjana R. & Prince Jose, Pineapple Research Station (Kerala Agricultural University), Vazhakulam-686670,
More informationVETIVER PROPAGATION. Nurseries and Large Scale Propagation. Dr Paul Truong Veticon Consulting Brisbane, Australia
VETIVER PROPAGATION Nurseries and Large Scale Propagation Dr Paul Truong Veticon Consulting Brisbane, Australia 1. INTRODUCTION The Vetiver Network promotes the use of sterile vetiver cultivar to avoid
More informationReplanting Walnut without Soil Fumigation: Is this Possible?
Replanting Walnut without Soil Fumigation: Is this Possible? Michael McKenry, UC Riverside Woodland, CA Feb 23, 2010 Wait 2 years, rip to five feet, walnuts after walnuts in clay loam soil, replant with
More informationH. E. Sommer, H. Y. Wetzstein and N. Lee
TISSUE CULTURE OF SWEETGUM (LIQUIDAMBAR STYRACIFLUA L.) H. E. Sommer, H. Y. Wetzstein and N. Lee Abstract.--An improved method for the tissue culture propagation of sweetgum (Liquidambar styraciflua L.)
More informationARRESTING PLANT MATURATION TO MAINTAIN HIGH PROPAGATION SUCCESS WITH AMERICAN SYCAMORE CUTTINGS. S. B. Land, Jr.:
ARRESTING PLANT MATURATION TO MAINTAIN HIGH PROPAGATION SUCCESS WITH AMERICAN SYCAMORE CUTTINGS S. B. Land, Jr.: Abstract.--Loss of rooting potential with maturation in sycamore limits clonal propagation
More informationDECIDUOUS HARDWOOD CUTTINGS. PlSc 300 Lab Compare root initiation and bud growth of cuttings in two different propagation environments.
0 DECIDUOUS HARDWOOD CUTTINGS PlSc 00 Lab REFERENCE: Text pp. - 0; 7-8. OBJECTIVES:. Learn how to make deciduous hardwood stem cuttings.. Compare root initiation and bud growth of cuttings in two different
More informationManagement practices for control of soilborne pathogens in UC strawberry cultivars. Kirk Larson UC Davis / UC South Coast REC
Management practices for control of soilborne pathogens in UC strawberry cultivars Kirk Larson UC Davis / UC South Coast REC High- Elevation Nurseries Low-Elevation Nurseries California strawberry nursery
More informationPlSc 300 Plant Propagation. Final Exam (150 points) Spring 2010
1 PlSc 300 Plant Propagation Final Exam (150 points) Spring 2010 Directions: You have two hours to complete this exam. Try to answer the following questions to the best of your ability. If you have any
More informationEVALUATION OF CHANDLER CLONE WALNUT TREES ON VARIOUS ROOTSTOCKS INCLUDING ITS OWN ROOTS
EVLUTION OF CHNDLER CLONE WLNUT TREES ON VRIOUS ROOTSTOCKS INCLUDING ITS OWN ROOTS - 2004 ill Olson, Joe Connell, Jed Walton, and Samuel Metcalf STRCT Reports that own rooted Chandler walnuts (Chandler
More informationHarmonizing Grapevine Nursery Stock Certification Programs in the Pacific Northwest
Harmonizing Grapevine Nursery Stock Certification Programs in the Pacific Northwest Boiseweekly Objectives Compare quarantines and certification programs Design a harmonized certification program and a
More informationRooting of Orthotropic Stem Cuttings under Greenhouse Conditions
Rooting of Orthotropic Stem Cuttings under Greenhouse Conditions Semi-hardwood Stock Plant Production 1. Juvenile somatic embryo plants at the sapling stage (at or near jorquette height) should be used
More informationHow to Propagate Hybrid Hazelnuts by Mound Layering
How to Propagate Hybrid Hazelnuts by Mound Layering Mound layering is a simple method of producing new plants that are genetically identical to the parent plants. The problem with producing new plants
More informationPhytotoxicity and Efficacy of Cycocel (Chlormequat Chloride) for Growth Control of Sweet Potato Vine (Ipomoea batatas Tricolor )
toxicity and Efficacy of Cycocel (Chlormequat Chloride) for Growth Control of Sweet Potato Vine (Ipomoea batatas Tricolor ) By Heiner Lieth, Director Linda Dodge Shannon Still Ron Lane Jackie Bergquist
More informationPistachio rootstocks. Elizabeth J. Fichtner Farm Advisor: nuts, prunes, olives UCCE Tulare and Kings Counties
Pistachio rootstocks Elizabeth J. Fichtner Farm Advisor: nuts, prunes, olives UCCE Tulare and Kings Counties What is a rootstock? The trunk or roots into which the scion material is inserted. Juncture
More informationFRUIT AND NUT NOTES SACRAMENTO VALLEY REGIONAL WALNUT NEWSLETTER
COOPERATIVE EXTENSION... UNIVERSITY OF CALIFORNIA FRUIT AND NUT NOTES TEHAMA COUNTY APRIL 2008 Volume 2 1754 Walnut Street, Red Bluff, CA 96080 Phone (530) 527-3101 Email: rpbuchner@ucdavis.edu Richard
More informationMICROPROPAGATION OF CHRYSANTHEMUM (CHRYSANTHEMUM MORIFOLIUM) USING SHOOT TIP AS EXPLANT
MICROPROPAGATION OF CHRYSANTHEMUM (CHRYSANTHEMUM MORIFOLIUM) USING SHOOT TIP AS EXPLANT R. Nalini Department of Biotechnology, Adhiparasakthi Agricultural College (Affiliated to TNAU) G. B. Nagar, Kalavai,
More informationUse Rooting Hormones, or Not? Multiple Applications May Be Best
Presented at the Eastern Region meeting of the International Plant Propagator s Society, September 2017 Use Rooting Hormones, or Not? Multiple Applications May Be Best Joel Kroin Hortus USA Corp. support@hortus.com
More informationPropagation by Grafting and Budding
Propagation by Grafting and Budding Larry A. Sagers Extension Horticulture Specialist Utah State University Thanksgiving Point Office Grafting is a term which covers many propagation techniques. It includes
More informationAsparagus Response to Water and Nitrogen
Asparagus Response to Water and Nitrogen Item Type text; Article Authors Roth, Robert L.; Gardner, Byrant R. Publisher College of Agriculture, University of Arizona (Tucson, AZ) Journal Vegetable Report
More informationPHYTOPHTHORA ROOT AND RUNNER ROT OF CRANBERRY IN WISCONSIN- THE CURRENT SITUATION
23 PHYTOPHTHORA ROOT AND RUNNER ROT OF CRANBERRY IN WISCONSIN- THE CURRENT SITUATION Michael J. Drilias and Steven N. Jeffers Department of Plant Pathology University of Wisconsin-Madison Root and runner
More informationPropagation techniques in horticulture
Propagation techniques in horticulture Main methods of propagation Sexual seed yearling (seedling) for some rootstock cultivars (fruit) for breeding most of the vegetables Asexual (vegetative, clonal)
More informationKeywords: Agarwood, satalum, resin, micropropagation, tok
Application of Tissue Culture Techniques in Woody Species Conservation, Improvement and Development in Vietnam: Agarwood (Aquilaria crassna Pierre ex LeComte) via tip Culture Tran Van Minh Institute of
More informationIR-4 Ornamental Horticulture Program Trial Report
Project Title: Evaluation of phytotoxicity of Mogeton (Quinoclamine) on Bearberry Cotoneaster (Cotoneaster dammeri Coral Beauty ) IR4 PR#: 23698 Report date: September 28, 26 Authors: Heiner Lieth and
More informationGarlic Production IDEA-NEW
Garlic Production IDEA-NEW Garlic (Allium sativum L.) Garlic Member of the onion family, cultivated for thousands of years and is used for its culinary and medicinal attributes. Garlic does not produce
More informationEFFECT OF INDOLEBUTYRIC ACID (IBA) AND PLANTING TIMES ON THE GROWTH AND ROOTING OF PEACH CUTTINGS
Sarhad J. Agric. Vol. 23, No. 3, 2007 EFFECT OF INDOLEBUTYRIC ACID (IBA) AND PLANTING TIMES ON THE GROWTH AND ROOTING OF PEACH CUTTINGS Muhammad Parvez *, Muhammad Zubair *, Mir Saleem **, Kashif Wali
More informationGrowing Lavender in Colorado
Growing Lavender in Colorado by K. A. Kimbrough and C.E. Swift 1 (10/09) Quick Facts... Hardy lavender varieties thrive in Colorado s USDA Hardiness Zones 5 through 7. Lavender grows best in full sun and
More informationTiming of Collection and Seed Source Affects Rooting of White Fir Stem Cuttings 1
Timing of Collection and Seed Source Affects Rooting of White Fir Stem Cuttings 1 A.M. Wagner, J.T. Harrington and J.T. Fisher 2 Abstract The importance of white fir as a Christmas tree and its variation
More informationInfluence of Indole 3- Butyric Acid on Hardwood Propagation of Lantana camara L.
Influence of Indole 3- Butyric Acid on Hardwood Propagation of Lantana camara L. Yasuhiko Koike, Tokyo University of Agriculture, Japan Ken-ichi Matsushima, Tokyo University of Agriculture, Japan Yozo
More informationVETIVER SYSTEM. Propagation and Nursery. Dr. Paul Truong Veticon Consulting Brisbane, Australia
VETIVER SYSTEM Propagation and Nursery Dr. Paul Truong Veticon Consulting Brisbane, Australia www.uqconnect.net/veticon All materials in this document remain the property of Veticon Consulting P/L. Permission
More informationQuestion Bank Vegetative Propagation
Question Bank Vegetative Propagation 1. Define vegetative reproduction. Ans. Vegetative reproduction is the formation of a new individual from any vegetative part of the plant body. 2. Mention any two
More informationVegetable Report 1 from Experiment Station, HARC December 1998
from Experiment Station, HARC December 1998 Index Words: asparagus, diversified crop EVALUATION OF ASPARAGUS AS A NEW CROP FOR HAWAII S. Schenck, J.J. McHugh, Jr., and M.T. Austin SUMMARY Asparagus (Asparagus
More information2016 World Crops Research Update - Okra and Eggplant
2016 World Crops Research Update - Okra and Eggplant Vineland is publishing Issue 3 (August/ September 2016) in a series of four research updates evaluating various varieties and the effect of different
More informationEVALUATION OF RELATIVE RESISTANCE OF DIFFERENT STRAWBERRY CULTIVARS TO PHYTOPHTHORA
EVALUATION OF RELATIVE RESISTANCE OF DIFFERENT STRAWBERRY CULTIVARS TO PHYTOPHTHORA AND VERTICILLIUM DAHLIAE AS A POTENTIAL ALTERNATIVE TO METHYL BROMIDE Christopher Winterbottom* 1, Frank Westerlund 1,
More informationGENERATION AND SELECTION OF PHYTOPHTHORA CINNAMOMI RESISTANT AVOCADO ROOTSTOCKS THROUGH SOMACLONAL VARIATION
1990 Summary of Avocado Research, pages 5-10 Avocado Research Advisory Committee University of California, Riverside GENERATION AND SELECTION OF PHYTOPHTHORA CINNAMOMI RESISTANT AVOCADO ROOTSTOCKS THROUGH
More informationGUIDE TO EVALUATING THE RISK OF DISEASE IN A GREENHOUSE
GUIDE TO EVALUATING THE RISK OF DISEASE IN A GREENHOUSE The following is a guide to assessing the various procedures and equipment used in a greenhouse, keeping in mind the risk of pathogen, mite, and
More informationRaspberries have an exceptionally. Raspberries: A New Greenhouse Crop. A New Greenhouse Crop. crop cultivation. By Meriam Karlsson and Jeffrey Werner
Raspberries: A New Greenhouse Crop A New Greenhouse Crop All photos courtesy of Jeff W. Werner. Raspberries fetch high prices, and they don t survive long-distance transport as well as other fruits. Local
More informationVegetative propagation of Robinia pseudoacacia L.
Vegetative propagation of Robinia pseudoacacia L. Dini O., Panetsos C. in Papanastasis V. (ed.), Stringi L. (ed.). Fodder trees and shrubs Zaragoza : CIHEAM Cahiers Options Méditerranéennes; n. 4 1994
More informationSOMATIC EMBRYOGENESIS OF DREPANOSTACHYUM FALCATUM AN IMPORTANT HILL BAMBOO-A RAPID MEANS OF MICROPROPAGATION
SOMATIC EMBRYOGENESIS OF DREPANOSTACHYUM FALCATUM AN IMPORTANT HILL BAMBOO-A RAPID MEANS OF MICROPROPAGATION I.D.Arya, R. Sharma & Sarita Arya Forest Genetics & Tree Propagation Division, Arid Forest Research
More informationNursery Tree Specifications & Tree Types Description
Future Orchards 2012 Orchard walk notes June 2007 Nursery Tree Specifications & Tree Types Description This tree specification and tree types description is provided to assist those involved in the Australian
More informationEstablishing a Source of Disease Free, True-to- Type Muscadine Vines
Establishing a Source of Disease Free, True-to- Type Muscadine Vines Zvezdana Pesic Van Esbroeck, Bill Cline, Benny Bloodworth, Rose Caldwell, Christie Almeyda Plant Pathology, NCSU Purpose: The purpose
More informationLesco Fertilizer Evaluation
Lesco Fertilizer Evaluation Dr. James T. Midcap Department of Horticulture The University of Georgia Athens, GA 30602 Nature of Work: Lesco=s 18-6-12 Experimental urea formaldehyde fertilizer with minors
More informationREGENERATION SYSTEMS FOR PYRAMIDING DISEASE RESISTANCE INTO WALNUT ROOTSTOCKS
REGENERATION SYSTEMS FOR PYRAMIDING DISEASE RESISTANCE INTO WALNUT ROOTSTOCKS John E. Preece, Kourosh Vahdati, Ana Maria Ibanez, Patty Jo Compton, Quyen Tran, Dio Gunawan, Aman Duggal, Chuck Leslie, David
More informationRESEARCH RESULTS for NURSERYMEN
RESEARCH RESULTS for NURSERYMEN Tok Furuta, Henry P. Orr, W.C. Martin and Fred Perry Horticulture Series No. 4 AGRICULTURE EXPERIMENT STATION of AUBURN UNIVERSITY E. V.. Smith, Director August, 1963 Auburn,
More informationIR-4 Ornamental Horticulture Program Trial Report
Project Title: Evaluation of phytotoxicity of Sulfentrazone on American Arborvitae (Thuja occidentalis Emerald Green ) IR4 PR#: 25362 Report date: November 21, 26 Authors: Heiner Lieth and Linda Dodge
More informationBOTANY/HORTICULTURE PLANT SCIENCE AG
Student's Name BOTANY/HORTICULTURE PLANT SCIENCE AG 0514 Directions: Rating Scale: Evaluate the trainee using the rating scale below and check the appropriate number to indicate the degree of competency
More informationIR-4 Ornamental Horticulture Program Trial Report
Project Title: Evaluation of phytotoxicity of V-1142 on Dwarf Periwinkle (Vinca minor Bowles ) IR4 PR#: 2549 Report date: November 22, 26 Authors: Heiner Lieth and Linda Dodge Department of Plant Sciences
More informationORGANOGENESIS IN CHRYSANTHEMUM MORIFOLIUM RAMAT (CULTIVAR ROMICA ) CALLUS CULTURES SMARANDA VÂNTU
Analele ştiinţifice ale Universităţii Al. I. Cuza Iaşi Tomul LII, s. II a. Biologie vegetală, 006 ORGANOGENESIS IN CHRYSANTHEMUM MORIFOLIUM RAMAT (CULTIVAR ROMICA ) CALLUS CULTURES SMARANDA VÂNTU Abstract:
More informationVirginia Tech VIRGINIA POLYTEHNIC INSTITUTE AND STATE UNIVERSITY
Virginia Tech VIRGINIA POLYTEHNIC INSTITUTE AND STATE UNIVERSITY THE EFFECT OF BOLSTER TREATMENT ON THE GROWTH OF BENTGRASS R. E. SCHMIDT, CROP AND SOIL ENVIRONMENTAL SCIENCES DEPT VIRGINIA POLYTECHNIC
More informationForcing Containerized Roses in a Retractable Roof Greenhouse and Outdoors in a Semi-Arid Climate
Forcing Containerized Roses in a Retractable Roof Greenhouse and Outdoors in a Semi-Arid Climate Ursula K. Schuch Plant Sciences Department University of Arizona, Tucson, AZ 85721 Abstract Sales of containerized
More informationIR-4 Ornamental Horticulture Program Research Report Form
Project Title: IR-4 Ornamental Horticulture Program Evaluation of phytotoxicity for Sulfentrazone 0.2G on Easter Lily (Lilium longiflorum Nellie White ) Protocol#: 06-010 Report date: June 12, 2007 Authors:
More informationPlant Propagation. Asexual Plant Propagation. Asexual Propagation. Benefits of Asexual Propagation. Where Can Cuttings be Taken From?
Asexual Plant Propagation Plant Propagation The reproduction of new plants from seeds or vegetative parts of a plant. Asexual Propagation The reproduction of new plants from the stems, leaves, or roots
More informationManaging Seedling Disease Problems on Rice Through Fungicides, Adapted Cultivars, and Cropping Systems
PEST MANAGEMENT: DISEASES Managing Seedling Disease Problems on Rice Through Fungicides, Adapted Cultivars, and Cropping Systems C.S. Rothrock, R.L. Sealy, F.N. Lee, M.M. Anders, and R. Cartwright ABSTRACT
More informationTraining and Pruning Florida Peaches, Nectarines, and Plums 1
HS1111 Training and Pruning Florida Peaches, Nectarines, and Plums 1 J. Ferguson 2 Fruit from Florida's early maturing peach, nectarine Prunus persica (L.) Batsch), and Japanese plum cultivars (Prunus
More informationPRUNING IN COFFEE INTRODUCTION:
INTRODUCTION: PRUNING IN COFFEE This note on PRUNNING IN COFFEE is born out of my practical experience. The facts and the methods of pruning in this would help planters of all status to practically apply
More informationREPORT. Study Results for Nature-Cide Integrated Pest Management (IPM) for Cannabis Cultivation
REPORT Study Results for Nature-Cide Integrated Pest Management (IPM) for Cannabis Cultivation The information generated in this report spans an eighteen month period where legal medical cannabis was cultivated
More informationGrafting of Tomatoes for Soil-based Production in Greenhouse and High Tunnels Judson Reid, Kathryn Klotzbach and Nelson Hoover
Grafting of Tomatoes for Soil-based Production in Greenhouse and High Tunnels Judson Reid, Kathryn Klotzbach and Nelson Hoover Introduction Soil based greenhouse and high tunnel production of tomatoes
More informationEvaluation of mini-cuttings as a propagation system for Eucalyptus hybrids
Evaluation of mini-cuttings as a propagation system for Eucalyptus hybrids D. Naidu a and N. Jones Sappi Forest Shaw Research Centre, Howick, KwaZulu Natal, South Africa. Abstract Clonal asexual propagation
More informationTraining and Pruning Florida Peaches, Nectarines, and Plums 1
HS1111 Training and Pruning Florida Peaches, Nectarines, and Plums 1 J. Ferguson 2 Fruit from Florida s early maturing peach, nectarine Prunus persica (L.) Batsch, and Japanese plum cultivars (Prunus salicina
More informationTraining and Pruning Florida Peaches, Nectarines, and Plums 1
HS1111 Training and Pruning Florida Peaches, Nectarines, and Plums 1 J. Ferguson 2 Fruit from Florida's early maturing peach, nectarine Prunus persica (L.) Batsch), and Japanese plum cultivars (Prunus
More informationRooting Hormones; Procedures for collecting, preparing and storing cuttings.
Unit 2. Rooting Hormones; Procedures for collecting, preparing and storing cuttings. During this laboratory period, you will be introduced to the various rooting hormones available to propagate plants
More informationTraining and Pruning Florida Peaches, Nectarines, and Plums1
HS1111 Training and Pruning Florida Peaches, Nectarines, and Plums1 Ali Sarkhosh and James Ferguson2 Fruit from Florida s early maturing peach, nectarine, and Japanese plum cultivars mature in April and
More informationAmerican Chestnut Research & Restoration Project
American Chestnut Research & Restoration Project SUNY-ESF C.A. Maynard, L.D. McGuigan, S.A. Merkle, and W.A. Powell IFB Meeting, November 28, 2007 Species Protection Through Disease Resistance: Moving
More informationAsexual Propagation? A= without Therefore asexual= without sex Without sex = No pollination
Asexual Propagation Asexual Propagation? A= without Therefore asexual= without sex Without sex = No pollination How? Clones the parent plant to create identical replicas of the plant. Uses plant parts
More informationIR-4 Ornamental Horticulture Program Trial Report
Project Title: Evaluation of phytotoxicity of V-1142 on American Arborvitae (Thuja occidentalis Emerald Green ) IR4 PR#: 25396 Report date: November 21, 26 Authors: Heiner Lieth and Linda Dodge Department
More informationGRAFTING AND BUDDING TECHNIQUES FOR APPLE. PlSc 300 LAB 8
58 GRAFTING AND BUDDING TECHNIQUES FOR APPLE PlSc 300 LAB 8 REFERENCE: Text pp. 464 474; 480 483; (Note illustrations). OBJECTIVES: 1. Develop proficiency in grafting and budding. 2. Learn basic principles
More informationUse of Tissue culture to alleviate the supply of quality planting materials among cacao smallholder farmers in Cote d Ivoire
Use of Tissue culture to alleviate the supply of quality planting materials among cacao smallholder farmers in Cote d Ivoire Jane Kahia, Siaka Kone, Georges Ngoran, Lucien Diby.,Jean Claude Nzi and Christophe
More informationHORMONE ROOT-SOAK CAN INCREASE INITIAL GROWTH OF PLANTED HARD- WOOD STOCK 1
Winter 1980/29 HORMONE ROOT-SOAK CAN INCREASE INITIAL GROWTH OF PLANTED HARD- WOOD STOCK 1 R. C. Hartwig and M. M. Larson Graduate Student and Professor, Department of Forestry, Ohio Agricultural Research
More informationTrial Results and Significance to Greenhouse and Nursery Operations
Trial Results and Significance to Greenhouse and Nursery Operations Presented by: Paul Pilon Perennial Solutions Consulting Jenison, Michigan paul@perennialsolutions.com 2009 Cold Tolerance Container Trials
More informationB.2. SPECIALIZED USES To change plant size and vigor. To repair damaged parts of established plant. To change plant form. Virus indexing.
NAME OF THE EXPERIMENT: PRACTICE OF VENEER GRAFTING TECHNIQUE IN MANGO PLANT A. GRAFTING Grafting is a horticultural art of an asexual propagation method in which two different plant parts (rootstock and
More informationLesson B1 4. Growing Poinsettias. Standard: III: Apply fundamentals of production and harvesting to produce plants.
Lesson B1 4 Growing Poinsettias Unit B. Floriculture Problem Area 1. Greenhouse Crop Production Lesson 4. Growing Poinsettias New Mexico Content Standard: Pathway Strand: Plant Systems Standard: III: Apply
More informationINTRODUCTION OF GRAFTING AS A NEW IPM TOOL IN ARIZONA MELON PRODUCTION
1 INTRODUCTION OF GRAFTING AS A NEW IPM TOOL IN ARIZONA MELON PRODUCTION Chieri Kubota, Mary Olsen and Michael A. McClure Department of Plant Sciences The University of Arizona Email: ckubota@ag.arizona.edu
More informationArticle 5. Registration and Certification of Grapevines Effective July 1, 2010
Article 5. Registration and Certification of Grapevines Effective July 1, 2010 3024. Definitions. (a) Apical microshoot tip culture means that anin vitro plant is created from pieces of plant 0.5mm or
More informationPlant Propagation Methodologies
Plant Propagation Methodologies Seeding, Grafting, Budding, Cuttings and Layering Roy Beckford Agriculture & Natural Resources Agent Plant Propagation There are two methods of plant propagation: Sexual
More informationCalifornia Avocado Society 1955 Yearbook 39: PHOSPHATE RESPONSE IN AVOCADO TREES
California Avocado Society 1955 Yearbook 39: 193-201 PHOSPHATE RESPONSE IN AVOCADO TREES A. R. C. Haas and Joseph N. Brusca Plant Physiologist and Senior Laboratory Technician, University of California,
More informationXI B R.AR.Y OF THE UNIVERSITY OF ILLINOIS G30.7. HGb. ho.354-3g3. cop. 2. TCR1CUITURE
XI B R.AR.Y OF THE UNIVERSITY OF ILLINOIS G30.7 HGb ho.354-3g3 cop. 2. TCR1CUITURE NOTICE: Return or renew all Library Material*! The Minimum Fee for each Lost Book is $50.00. The person charging this
More information