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
Citation
Abstract:
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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