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Prunus Cultivar: Colt

Cultivar Name: Colt
Type Cherry Rootstock
Synonyms EMLA Colt
Patent National Seed Development Organisation Limited (Newton, EN) 1977 PP04059
Parentage Prunus avium F 299/2 x Prunus pseudocerasus Lind
Usage Rootstock
Scion Vigor Influence Semi-vigorous
Soil Adaptation tolerates wet heavy soils better than Mahaleb and Gisela 5, drought sensitive, slight to not dwarfing under California irrigated conditions,
Climatic Adaptation not cold hardy (not a problem in California climate)
Resistance Traits Has shown resistance to Phytophthora root rot and gopher damage, but is susceptible to crown gall caused by Agrobacterium tumefaciens; resists bacterial canker; cherries on Colt are field resistant to cherry stem pitting.
Graft Compatibility Colt has good compatibility with nearly all cherry varieties, possibly excluding Van.
Propagation Notes Preformed root initial make propagations by hardwood and softwood cuttings very effective.
Propagation Method Vegetative
Suckering Low
Description Originated in Kent, England, by H.M. Tyderman, deceased, late of East Malling, England. Pollination, evaluation, and testing was carried out at the East Malling Research Station, Maidstone, Kent, England. Patent date June 14, 1977. The original plant was a member of a family of seedlings, Fb 2/58, cross produced by pollinating flowers of Prunus avium L. F 299/2 with pollen from Prunus pseudocerasus Lind. in 1958. Selection was made in 1966/1967. Vigorous, sturdy, erect shoots with large, bright-green leaves; stems greenish. When used as understock, induces some dwarfing and higher fruit bud production However, in the Northwest irrigated orchards it produces a vigorous tree that is similar in size ot Mazzard with similar low precocity. Also in the Northwest, Colt performs well in replant situations where cherries follow cherries on nonfumigated sites. Yield potential: The Colt cultivar has been found to induce higher fruit bud production on the scion in the early life of the cherry tree than F 12/1, thus in favorable years giving heavier crops earlier in the tree's life. Fruit quality is equal to, or better than, that produced on F 12/1 rootstock. A good rootstock for growing cherry trees in large gardens and community orchards. It produces a tree with a height of 12ft-14ft in European conditions and somewhat larger in North American conditions. It is useful for large cherry fans. Colt is roughly comparable to the apple MM111 rootstock.


No photos for this cultivar.