重穗型杂交水稻物质积累及转运特性研究

以5个重穗型杂交水稻品种为材料,研究重穗型杂交水稻的干物质积累与转运情况,旨在为高产水稻品种的选育和栽培提供参考.结果表明:绵恢725系列及乐恢188系列水稻品种库容量大,填库能力强,具有干物质积累总量多、输出量大、有效转化率高的特点;供试的重穗型水稻品种的产量均极显著高于对照品种Ⅱ优838,平均高8.64％;绵恢725系列及乐恢188系列水稻品种的干物质积累、转运系统优于对照Ⅱ优838,具有更强大的产量库容和更强的生物产量等优势.

Study on the accumulation and transformation of assimilation product in heavy panicle type of hybrid rice

With five heavy panicle types of hybrid rice varieties as materials, the accumulation and transformation of dry matter in heavy panicle type of hybrid rice were studied, in order to provide a reference for the breeding and cultivation of high-yielding rice varieties. The results showed that Mian Hui 725 series and series of rice varieties were superior in sink capability and its sink filling ability. And they had excellent characters of large dry matter accumulation,big volume of dry matter output and high effective conversion rate. The yields of heavy panicle type of rice varieties tested were significantly higher than those of the control varieties II,838, with an average high of 8.64% . Dry matter accumulation and transport system of Mian Hui 725 series and Le Hui 188 series of rice varieties were better than those of the control II,838, which lead to more powerful production of the sink capability and greater biomass production and other advantages.