Nutritional potential ofVigna minima (Roxb.) Ohwi and Ohashi: |
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Authors: | Mambully C Gopinathan Cherukuri R Babu Sukumar R Chatterjee Yash P Abrol |
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Institution: | (1) Department of Botany, University of Delhi, 110007 Delhi, India;(2) Nuclear Research Laboratory, Indian Agricultural Research Institute, 110 012 New Delhi, India |
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Abstract: | Quantitative variation in different fractions of seed proteins and their amino acid levels in populations ofVigna minima (Roxb.) Ohwi and Ohashi and inV. umbellata cv. IC 1568 — the rice bean — were investigated. Globulin I fraction, together with globulin II, constitutes 38 to 54 per cent of the total seed protein. The alkali soluble (glutelin) fraction is the second largest fraction. Both these fractions show broad range of variation, suggesting a broad genetic base. The profiles are population specific; the coastal population, which contains higher seed protein also possesses maximum levels of globulin I and glutelin fraction suggesting its potentiality for breeding lines with high protein content, high nutritive value, and salt tolerance. Protein content is positively correlated with globulin I and glutelin fractions, which are in turn positively correlated with each other. The amino acid profiles are specific not only to the fractions but also to the populations. The range of variation in the levels of all amino acids in different fractions is broad suggesting substantial genetic diversity. The average levels of lysine and sulphur amino acids are high in globulin I and glutelin fractions. |
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Keywords: | quantitative variation fractions of seed proteins amino acid composition Vigna minima Vigna umbellata |
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