Center of genetic diversity and dissemination pathways in mungbean deduced from seed protein electrophoresis
1991
Potjanee Nakeeraks | Chalermpol Lairungreang | Charaspon Thavarasook (Chainat Field Crops Research Center, Chainat (Thailand))
Seed protein of 590 local strains of mungbean, Vigna radiata (L.) Welczek, collected from throughout Asia, were analyzed by SDS-polyacrylamide gel electrophoresis. Eight protein types were recognized, based on the combination of four albumin bands and three globulin bands. Frequency distribution of each protein type strain from each region showed a clear geographical cline. These data suggested that the regions of genetic diversity and dissemination are pathways in mungbean. The regions of genetic diversity in seed protein exist in Western Asia (Afghanistan-Iran-Iraq area). Mungbean is considered to be domesticated in India. Mungbean would have spread mainly to the east by two routes. One route lead to the southeast Asia from India. Strains consisted of a few protein types with a prominent predominant protein type 1 disseminated from India to the Southeast Asian countries. Thus the strain composition in the Southeast Asia is very simple and similar to each other. Another dissemination pathway would have been the route well known as the Silk Road. By this route, not only be the route from the Southeast Asia, mungbean strains spread from Western Asia or India to China and Taiwan.
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