Influence of genotype and environment on isoflavone contents in fresh seeds of vegetable soybean

Influence of genotype and environment on isoflavone contents in fresh seeds of vegetable soybean

2013

A:PS

This study investigated changes in types and contents of isoflavone in fresh seeds of vegetable soybean of different genotypes and growth environments and their interactions so as to help developing new cultivars and functional products. By planting seeds of twenty-one genotypes in eight growth environrnents, results showed that in fresh seeds of vegetable soybean, daidzin, genistin, glycitin, 6"-O-malonyldaidzin6"-O-malonyl-genistin and 6"-O-Malonylglycitin were the major types of isoflavone found, accounting for 93.7 to 97.2% of total isoflavone contents Variation of total isoflavone contents was significantly different in genotypes, growth environments and their interactions. The main components of variance were genotype and environmlent, occupying 32.9% and 48.4% of total variation, respectively. Of the factors 'year(Y)' and 'season (S)', Y was the primary factor for growth environment, with 44.7% of total variation. Total isoflavone contents in fresh seeds harvested from fall crop were higher by 95.9% than that of spring crop. Among the examined twenty-one genotypes, cultivars 'TNSl1' and 'KHS1' had the highest isoflavone contents. Results suggest that it is not feasible to breed a specific variety containing high isoflavone contents in both spring and fall crops due to the opposite weather conditions during season. The best policy would be to develop specific variety separately for different cropping seasons.\n

10(2):123-130, CROP, ENVIRONMENT & BIOINFORMATICS

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