58
PNL Volume 15
1983
RESEARCH REPORTS
ISOZYME VARIATION AT SELECTED LOCI IN PISUM
Weeden, N. F.
NYS Agricultural Experiment Station, Geneva, NY, USA
Several recent studies have demonstrated the existence of allelic
variants (allozymes) at isozyme loci in Pisum and have used such varia-
tion to help elucidate relationships among taxa within the genus (1,2).
In an effort to identify additional allozymic variation for linkage and
biochemical studies I surveyed approximately 100 diverse lines and ten
USDA Plant Introduction accessions. The latter group included samples
labelled P. elatius. P. jomardii. and P. sativum ssp. syriacum. abys-
sinicum and hortense. The 43 isozyme stains used in the survey
permitted the visualization of products from 77 distinct loci. Of
these, 40 were found to exhibit allozymic forms. The list of currently
available isozyme variants is given in Table 1 along with the lines in
which the rarer variants were discovered. This author would appreciate
information regarding polymorphism at additional isozyme loci not in-
cluded in Table 1.
1. Parzysz, H. , J. Przybylaaka and S. Blixt. 1982. PNL 14:55-56.
2. Przybylska, J., H. Parzysz and S. Blixt. 1981. PNL 1 3:42-43.
