| 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. |
