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Isoflavone Contents of Soybean according to Different Planting Dates  

Yun, Hong-Tae (National Institute of Crop Science, RDA)
Kim, Wook-Han (National Institute of Crop Science, RDA)
Lee, Yeong-Ho (National Institute of Crop Science, RDA)
Suh, Sae-Jung (National Institute of Crop Science, RDA)
Kim, Si-Ju (National Institute of Crop Science, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.51, no.spc1, 2006 , pp. 174-178 More about this Journal
Abstract
This study was conducted to compare the changes of isoflavone content grown at different planting dates and to determine a relationship between growing periods and isoflavone content, in soybean. A total fifty six soybean varieties, including summer type soybean, Chinese varieties and domestic soybean varieties, were used this experiment. Mean total isoflavone content of domestic soybean varieties was higher than summer type soybean varieties and Chinese varieties. And, the soybean isoflavone content was significantly increased in growth at late planting dates. Soybean isoflavone contents was increased with longer reproductive growth period. While, the relationship between seed weight and isoflavone content showed significantly negative correlation coefficient, -0.57 at Apr. 15, -0.51 at May 15, and -0.38 at Jun. 15, respectively planting dates.
Keywords
soybean; variety; isoflavone; planting date;
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