Analysis of intraspecific polymorphism in C-banding patterns of Aegilops umbellulata L. chromosomes.

摘要

Karyotypes of 9 A. umbellulata samples from different regions of Iran, Turkey and Azerbaijan were examined, and chromosomes classified according to genetic nomenclature. Polymorphism of banding patterns within samples was not detected but karyotypesdiffered in the presence and size of certain C-bands. Banding patterns of samples collected in close proximity to each other were more similar than those of samples collected from distant regions. Comparison of C-banding patterns and patterns of hybridization with the DNA clone pSc119 showed that highly repetitive DNA regions were located mainly in the constitutive heterochromatin of chromosomes.