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水稻品种的生产力主要取决于每穗粒数、穗数、千粒重和结实率四要素。分析研究这四个主要经济性状与产量的相互关系,对于选育新品种,提高单位面积产量有着重要的意义。根据基因学说的理论,一个数量性状往往是许多微效基因通过累加作用进行控制;这类基因具有多效性,同一个基因可以对不同性状施加影响,因而使品种的性状间产生了一定的依存关系。许多学者对水稻性状间的相互关系进行了研究。[2]、[3]这些研究对于分析各种性状影响产量的主次作用,以便在选择时,进行综合权衡,对选育丰产品种具有一定的指导作用。本文根据近年来我国南方稻区区域试验的资料,分析研究了我
The productivity of rice varieties depends mainly on the number of spikes per panicle, spikes, grain weight and seed setting rate of four elements. The analysis of the interrelationship between these four main economic traits and yield has important significance for breeding new varieties and increasing yield per unit area. According to the theory of gene theory, a quantitative trait is often controlled by the accumulation of many microspore genes; these genes are pleiotropic, and the same gene can affect different traits, thus resulting in some dependence on the traits relationship. Many scholars have studied the relationship between rice traits. [2], [3] These studies are of primary and secondary roles in analyzing the effects of various traits on yield, so as to make a comprehensive trade-off when selecting and have some guidance on breeding high yielding varieties. In this paper, based on the data of the regional experiments of rice in South China in recent years, we analyzed and studied me