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Fruit Varieties Journal
(Fruit Var J)

American Pomological Society

Volume 28 Number 4 Article 7 Pages: 95-99
Year 1974 Month 10
Title: Germplasm Reserves of North American Nut Trees
Author: R.A. Jaynes
Existing germplasm collections of the different nut tree species are correlated with the amount of research and the commercial value of the nut crop. There is a need to delineate specific objectives of germplasm collections for each species followed by commitments on a long term basis. A national committee would be of benefit in achieving the desired results. Nut tree species of Carya, Castanea, Corylus, ]uglans, and Pistacia are discussed. All the species are highly heterozygous. Germplasm reserves should be maintained in clonal collections: Seedling material, with the exception of black walnut, is of secondary importance. Genetic vulnerability is a serious threat only for those species where commercial production is limited to one or a few clones. Yet, valuable germplasm may be lost forever if greater effort is not given to its preservation.

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