Abstract
Seed protein was extracted from two varieties of cowpea (CO 2, CO 6) and eight distant species of Vigna and was analysed by SDS-PAGE. The relative migration (Rm) and Similarity Index (SI) were worked out. There was no difference in protein profiles of varieties CO 2, a vegetable type cowpea and CO 6, a grain type cowpea (SI = 100%). A high SI has been exhibited by V. glabrescens with V. radiata (62.5%) and V. umbellata (45.4%), the probable progenitors of the natural amphidiploid V. glabrescens. V. sublobata and V. trilobata trevealed greatest SI (90.9%) indicating a close evolutionary relationship, on the contrary, V. mungo and V. umbellata exhibited a zero value revealing a greater evolutionary distance. The electrophoretic variability study indicates difficulty in obtaining interspecific hybrids through conventional methods for cowpea improvement (SI < 26.67%).
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Gomathinayagam, P., Ramaswamy, N.M. Seed Protein Pattern of Cowpea (Vigna unguiculata L.) and Its Distant Species. J. Plant Biochem. Biotechnol. 3, 149–151 (1994). https://doi.org/10.1007/BF03321968
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DOI: https://doi.org/10.1007/BF03321968