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穗数、粒数和粒重是水稻产量的三个构成要素。以往曾有不少研究者报道过其数量性状遗传的特质,并估算其遗传率或遗传相关、选择指数等参数。本文之目的在于阐明:(1)生育期短的不同类型早籼杂交组合在经济性状遗传上的特点;(2)植株经济性状在单本栽与丛栽条件下表现的一致性;并进而讨论如何对产量构成因素进行合理的综合和选择,期望为早籼高产育种提出些设想。
Spike number, grain number and grain weight are the three components of rice yield. In the past, many researchers reported the traits of inheritance of quantitative traits and estimated the heritability or genetic correlation, selection index and other parameters. The purpose of this paper is to clarify: (1) the characteristics of the economic traits of different types of early indica hybrids with short growing periods; (2) the consistent performance of plant economic traits under monocultures and plantations; and further discussion How to reasonably synthesize and choose the factors of yield and expect to put forward some ideas for high yielding early indica rice.