Herbaceous Tomato Grafting- J. reznicek

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Information about Herbaceous Tomato Grafting- J. reznicek
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Published on March 10, 2014

Author: ekillinger1

Source: slideshare.net

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Josh Reznicek's presentation from 3-11-13

3/10/2014 1 HERBACEOUSGRAFTING TOMATO GRAFTING March 11, 2014 1 JoshuaJ. Reznicek HorticultureGraduateStudies Department ofAgronomyand Horticulture University of Nebraska-Lincoln jjreznicek@huskers.unl.edu Table of Contents • 3- Anatomy and Physiology Review • 6- Requirement for Success • 7- Reasons for Herbaceous/Tomato Grafting • 8- Scion Selection • 9- Rootstock Selection • 10- Methods of Grafting • 14- Materials Needed • 15- Procedure • 16- Post Grafting Care • 17- Planting • 18-TentativeTimeline • 25- References 2 Anatomy and Physiology Review • Terms • Polarity(Proximal,Distal) • Scion • Desired cultivar for fruit production. • Union • Location at which the rootstock and scion are paired. • Rootstock • Hardy cultivar selected for vigor/disease resistance/virus resistance. • Evapotranspiration • Combination of evaporation and transpiration rates occurring on the leaf surface. • Vigor • Measurement of rate and health of plant growth. 3 Anatomy and PhysiologyCont. • Terms Cont. • Xylem • Part of the plants vascular system that transportswater and nutrients upwardsthroughthe plant. • Phloem • Part of the plants vascular system that transportscarbohydratesand sugarsthroughoutthe plant. • Vascular Cambium • Layer of tissue between the xylem and phloemthat contains undifferentiated cells. • Location of cell expansion. 4 5 Requirements for Success • Rootstock and scion must be compatible. • The vascular cambium of the scion must be placed in direct contact with that of the rootstock. • The grafting operation must be done at a time when the rootstock and scion are in the proper physiological state. • Immediately after the grafting operation is completed, all cut surfaces must be protected from desiccation. • Proper care must be given to the grafts for a period of time after grafting. 6

3/10/2014 2 Reasons for Herbaceous/TomatoGrafting • Fruit type • Fruit flavor • Vigor • Disease resistance • Fruit quality • Yield • Virus transmission 7 Scion Selection • ‘Brandywine’ • ‘Green Zebra’ • ‘Lollypop’ • ‘Cherokee purple’ • ‘Black Krim’ • ‘Amish Paste’ • ‘Big Rainbow’ • ‘Chocolate Cherry’ • ‘Redcurrant’ 8 RootstockSelection • ‘Beaufort’ • ‘Maxifort’ • ‘Mutlifort’ • ‘Resister’ • ‘Resigaurd’ • ‘RST-04-106-T’ 9 Methods of Grafting • One Cotyledon Graft • Alsoknownas splicegraft,andJapanesetube graft. • Requires very highhumidityand extreme shade • Hole Insertion Graft • Used mostlywithcucurbits • Watermelon,squash,melons,etc. • Requires less materialsand care. • Side Insertion Graft • Been replaced withOCG • Tongued Approach Graft • Highsuccess • Highlabor 10 One CotyledonGraft 11 Hole InsertionGraft 12

3/10/2014 3 TonguedApproachGraft 13 Materials Needed • Razor Blade • RubbingAlcohol • Cotton Balls • Grafting Clips • Scion Seedlings • Rootstock Seedlings • Dome • Duct Tape • Healing Chamber • Shaded Structure • White Covering • Multiplelayers to reduce light • White for more reflection and less heat gain as comparedto black material. 14 Procedure • Seed Rootstock/Scion • Usually 2-3 weeks prior to grafting • Water rootstock flat • 45 degree cut on rootstock • Place grafting clip on rootstock • 45 degree cut on scion • Insert into grafting clip • Aligning the scion and rootstock • Repeat on remaining plants • Cover with plastic dome • Duct tape edges to lock in moisture and humidity • Place into healing chamber 15 Post GraftingCare • Healing chamber • Limits evapotranspiration • Reduces photosynthesis • Limit desiccation • Gradually reduce humidity and increase light after 2 days for 7-10 days • Acclimate to surrounding environmental conditions 16 Planting • “Hardening Off” • Placing outside to acclimate to those environmental conditions • Increasingly longer time each day • Thickens cuticle • Planting depth is crucial • Cannot burry graft union • Burying graft union will allow the scion to root out rendering the desired traits of the rootstock useless. 17 TentativeTimeline • Sow scion/rootstock seeds • 10-14 days germination occurs • After 2-3 weeks of maturity complete graft • ~ 2 days of extreme shade • Slowly acclimate to indoor conditions over 7-10 days • Harden off grafted plants ~7 days • Transplant to final location 18

3/10/2014 4 19 20 21 22 23 24

3/10/2014 5 References • RyanArmbrust • Plant Propagation – Herbaceous Grafting • SelectingTomato Rootstocks • University of Arizona 25

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