Studies on the Cytology of Legumes of Kashmir Himalaya

III. Interpopulation differences in the karyotypes of 3 species of Astragalus L

Abstract

Three species of Astragalus, namely A. grahamianus, A. leucocephalus and A. zanskarensis, collected from two geographically isolated locations each, have been found to exhibit inter-population karyotypic differences. These populations have been found to differ from each other in almost all the karyotypic features like the range of chromosome size, types of chromosomes constituting their karyotypes, total chromatin length, mean chromatin length and the position of marker chromosomes in their idiograms. These interpopulation karyotypic differences and their bearing on the evolution, in these species, have been discussed.