摘要
[Objectives] The paper focused on the way how to promote yield of early indica rice Zhongzao 39. [Methods] At different yield levels, the yield components of super-high yield population in Zhongzao 39 were analyzed. Correlation analysis, regression analysis and path analysis were performed to analyze the relationship among traits and their contributions to yield. [Results] The performance of ear, grain and weight in Zhongzao 39 showed significant differences among different yield levels. It showed that the direct contributions of main economic traits to yield were determined to be 1 000-grain weight〉effective ears〉seed setting rate〉filled grains per ear. [Conclusions] The super-high yielding and effective cultivation techniques were suggested as follows： on the basis of the increasing number of effective ears and the remaining of grain weight, a stable seed setting rate should be considered.
[Objectives] The paper focused on the way how to promote yield of early indica rice Zhongzao 39. [Methods] At different yield levels, the yield components of super-high yield population in Zhongzao 39 were analyzed. Correlation analysis, regression analysis and path analysis were performed to analyze the relationship among traits and their contributions to yield. [Results] The performance of ear, grain and weight in Zhongzao 39 showed significant differences among different yield levels. It showed that the direct contributions of main economic traits to yield were determined to be 1 000-grain weight〉effective ears〉seed setting rate〉filled grains per ear. [Conclusions] The super-high yielding and effective cultivation techniques were suggested as follows： on the basis of the increasing number of effective ears and the remaining of grain weight, a stable seed setting rate should be considered.
基金
Supported by the Science and Technology Plan of Taizhou City(121KY15)
