Grafting Flashcards
The ability of the bark to be separated from the wood at certain times of the growing season due to high levels of callus production by the vascular cambium
Bark slippage
A type of repair grafting in which scions are grafted to the trunk of the original tree in such a way as to conduct water and carbohydrates across a damaged area of the trunk
Bridge grafting
Grafting technique where the scion is a small piece of bark, sometimes with wood, containing one bud
Budding
A double graft involving a rootstock, interstock, and scion whether done in one or two steps
Doubleworking
The juncture at which the scion and stock of a grafted plant have successfully united
Graft union
The art of joining parts of plants together in such a manner that they will unite and continue their growth as one plant
Grafting
A type of repair grafting in which seedlings or suckers at the base of the original tree are grafted into the trunk to provide a new root system for a tree with damaged roots
Inarching
The inability of a grafted scion and stock to produce a successful graft union or to have the resulting grafted plant develop satisfactorily
Incompatibility
Between individuals of different taxonomic families
Interfamilial
Between individuals of the same family, but different genera
Intergeneric
Between individuals of the same genus, but different species
Interspecific
An intermediate stem or bud piece grafted between a scion and rootstock
Interstock
Between individuals of the same species, but different clones or cultivars
Intraspecific
Early flowering
Precocity
The lower or root-bearing portion of a grafted plant
Rootstock
The upper portion or top of a grafted plant
Scion
Changing the scion variety or cultivar by grafting onto usually established plantings or rootstocks for the purpose of replacing undesirable cultivars, establishing pollinators, or several scion cultivars on one stock (e.g. “fruit cocktail” tree)
Topworking
Reasons to graft
Cutting prop. sometimes impractical
- Ex: Fruit and nut trees; some woody ornamentals
Rootstock benefits
- Ex: hardiness, pest resistance, disease resistance, soil type, etc
Interstock benefits
- Ex: overcome certain types of graft incompatibility; Obtain favorable characteristics not in scion or rootstock
Change cultivar of established plantings
Hasten flowering and fruiting of seedlings
Obtain special forms of plant growth (e.g. dwarf cultivar)
Repair damaged trees
Types of rootstock
Seedling
• Easy and economical
• Viruses usually not seed transmitted
• Sometimes better root system
Clonal
• Uniformity
• Preserves special characteristics and influences
