Effects of Endogenous and Exogenous Plant Growth Substances on Development and Yield of Soybeans
Development of commercially useful plant growth regulators (PGR) for soybeans has proven to be a major challenge. It seems that the regulation of soybean yield is highly self-compensating. Our program therefore, was first to understand the endogenous regulation of yield components. We hope information from this work will provide a basis for biorational selection processes for PGRs. Endogenous plant growth substances (PGS) have been implicated in the regulation of reproductive development of soybeans [1–3, 5, 7, 8, 14–18]. This report describes the longdistance transport of PGSs throughout soybean plants and suggests roles for PGS in the movement of photoassimilates to developing seeds.
KeywordsClay Sucrose Fructose Gibberellin Xanthium
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