The Journal of Heredity 1986:77(4):272-274
© 1986 The American Genetic Association 77:272-274
research-article |
Comparison of isozyme variability in peach and almond cultivars
The authors are, respectively, post graduate research geneticist, assistant pomologist, and professor, Department of Pomology, University of California, Davis CA 95616. They wish to thank Dr. Paul Fridlund for providing leaf samples of some peach cultivars, Drs. S. K. Jain and S. A. Weinbaum for reviewing the manuscript, and Anne Nooteboom and Carol Calibro for technical assistance. This work was supported by USDA grant 81-CRSR-2-0732.
Abstract
Patterns of allozyme variation were studied in two cultivated Prunus species, peach and almond. The predominantly self pollinating peach cultivars showed polymorphism for one of 12 enzyme loci, whereas the outcrossing aimond cultivars were polymorphic for nine of the 12 enzyme loci studied. Mdh-1 is the only locus that was found to be polymorphic in the peach, and this was traced back to the introduction of Chinese cultivars into the United States. The role of breeding systems in relation to genetic variability in these crops is dicussed. The results will be useful for the development of germplasm collection strategies and for genetic improvement of the peach and aimond.
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