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穗数、粒数和粒重是决定水稻产量的主要因素。其中某一因素的改良,便可使产量有不同程度的提高。但是它们各自在构成稻谷产量中所起的作用是不相同的,而且这些性状彼此间又存在着复杂的关系,这就使得我们在高产育种时必须要同时考虑对产量贡献最大的因子和协调好与其他性状的关系。为了了解水稻主要经济性状的遗传规律,各性状的相关以及它们对提高产量的相对重要性,特进行了此项研究,且借助于统计学方法加以剖析,以求为正确地选配杂交亲本、杂种后代的选择和提高育种效率提供依据。
Spike number, grain number and grain weight are the main factors that determine the yield of rice. The improvement of one of these factors can increase the output in varying degrees. However, their respective roles in forming rice production are not the same, and these traits have complicated relationships with each other, which makes it necessary for us to consider both the factor that contributes the most to the yield and the coordination in the high-yielding breeding Relationship with other traits. In order to understand the genetic law of the main economic traits of rice and the correlation between the traits and their relative importance to increase the yield, this study was carried out specially and analyzed by means of statistical methods in order to correctly select hybrid parents, Provide the basis for selection of hybrid offspring and improvement of breeding efficiency.