Author(s): K. KAUR, B. S. GILL AND 1S. SHARMA

Abstract: Seventeen soybean genotypes were evaluated for phenotypic and genotypic variability, heritability and genetic advance for fourteen quality characters viz., protein, oil, sucrose, trypsin inhibitor activity, total phenols, tannins, saponin, tocopherol, phytic acid and fatty acid composition (Palmitic, stearic, oleic, linoleic and linolenic acid) under three different sowing dates (March 1, June 5 and August 7) at Punjab Agricultural University, Ludhiana. High amount of genetic variability was possessed by saponin content, tocopherol content and linolenic acid in all the sowings except for linolenic acid in March sowing. Considerable amount of genetic variability was exhibited by other biochemical characteristics. Heritability estimates were high for saponin, tocopherol, phytic acid content and all fatty acids in all the environments. High heritability with high genetic advance was observed for saponin content, tocopherol content, palmitic acid and linolenic acid indicating the presence of additive gene action in their inheritance, providing rapid genetic improvement through simple selection.

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