Indian Institute of Pulses Research, Kanpur, 208 024.
Coefficient of parentage (COP) analysis was performed to identify the ancestor genotypes which contributed the most to Indian mungbean [Vigna radiafa (L.) Wilczek] cultivars, as prediction of the width of genetic base. From the analyses it was evident that 93 mungbean cutivars could be traced back to 71 ancestors. The ancestor genotypes T 1, T 49, T 2, SR 2, G 65 and Madhira Mung were those which contributed the most to the current mungbean varieties. A total of 24 similarity groups were formed and mean COP was estimated to 0.04. T1 contributed as high as 17% of the genetic base of the released cultivars. Extensive and repetitive use of superior genotypes with common ancestors explained why the genetic base of released varieties is narrow. The integration of exotic and alien germplasm is paramount for broaden the genetic base of cultivated germplasm of mungbean.
Mungbean, genetic diversity, coefficient of parentage, genetic base
