The objective of this study was to identify a boron(B)application strategy maximizing cotton yield.In a two-year experiment across two soil types with three B application rates,B availability significantly regulated b...The objective of this study was to identify a boron(B)application strategy maximizing cotton yield.In a two-year experiment across two soil types with three B application rates,B availability significantly regulated boll biomass accumulation rate in a 12-19-d post-anthesis window;B concentrations of 41-74 mg B kg-1 in leaves subtending bolls maximized boll weight;and moderate B application increased source-sink carbon flux by increasing net photosynthetic rate,sucrose biosynthesis,and phloem loading efficiency.Integrating these three findings will increase photoassimilate partitioning to reproductive sinks,boosting cotton yield and B-use efficiency.展开更多
基金supported by the National Key Research and Development Program of China(2024YFD2300605)China Agriculture Research System(CARS-15-14)+1 种基金Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry(CIC-MCP)Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX25_0973)。
摘要The objective of this study was to identify a boron(B)application strategy maximizing cotton yield.In a two-year experiment across two soil types with three B application rates,B availability significantly regulated boll biomass accumulation rate in a 12-19-d post-anthesis window;B concentrations of 41-74 mg B kg-1 in leaves subtending bolls maximized boll weight;and moderate B application increased source-sink carbon flux by increasing net photosynthetic rate,sucrose biosynthesis,and phloem loading efficiency.Integrating these three findings will increase photoassimilate partitioning to reproductive sinks,boosting cotton yield and B-use efficiency.