Variation and geographical distribution of seed storage proteins and waxy proteins in foxtail millet (Setaria italica)
1994
Afzal, M. | Kawase, M. | Okuno, K. | Anwar, R.
Phylogenetic differentiation and geographical distribution of genetic variation for total seed storage protein and waxy protein in two hundred and seventeen accessions of Setaria italica from Europe and Asia were investigated by SDS-PAGE. Total seed storage protein electrophoregrams were characterized and classified into six types. These six protein profile types have been designated as A, B, C, D, E and F. Results indicated that Indian sub-continent, Afghanistan, Central Asia and Europe share almost the same phylogenetic groups. While Japan, China, Korea and Taiwan have a group unique to this region. Pakistan shares a type which is common to Europe, Central Asia and Far East but not other areas of the sub-continent. On the basis of waxy protein electrophoregrams, the whole germplasm was grouped into three classes, viz: nonwaxy, intermediate and waxy. Waxy lines are distributed in Japan, Taiwan, Korea and Myanmar. Intermediate types were detected in Japan, Taiwan, the Philippines, Thailand and Indonesia. In India, Nepal, Pakistan, Afghanistan, Central Asia, and Europe, only nonwaxy types have been detected. A protein fraction of 60 kilodalton, which correlates with the amylose content and, supposedly, functions in the formation of nonwaxy seed was discovered.
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