<紀要論文>
CHANGES IN ENDOGENOUS GROWTH REGULATOR LEVELS AND BRANCHING RESPONSES OF SOYBEAN TO LIGHT QUALITY ALTERED BY VELVETLEAF (ABUTILON THEOPHRASTI MEDIK.)

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概要 Lateral branching of soybean is considered a major contribution of additional fruiting sites for high yields. The present study was conducted to expand our understanding of how lateral bud development... in soybean is reduced by early-season velvetleaf interference. Our results suggested that the significantly higher levels of endogenous indole-3-acetic acid (IAA) at the terminal buds and internodes of soybeans, when exposed to shadelight of low red: far-red ratio (R: FR), induced an increased synthesis of abscisic acid (ABA) in the axillary buds. The elevated amount of ABA in turn was responsible for the suppression of axillary bud outgrowth (branching). Zeatin riboside, a major cytokinin in soybean, did not appear to play a significant role in the release of soybean lateral buds from low R: FR-induced apical dominance.続きを見る

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登録日 2009.04.22
更新日 2015.11.09