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数量性状又称连续变异性状,如作物的产量以及和它有关的一些经济性状(如产量、粒重、株高、生育期等),这些性状受微效多基因所控制,它们易受环境的影响而发生变异。早在1909年Nilson-Ehle首先提出了数量性状的多因子假说。East(1910)也认为数量性状的遗传是受一系列独立基因的支配,且这些基因的作用是累加的。Mather(1949)进一步发展了这一概念,他研究了数量性状的变异及其组成部分、基因的作用、加性效应、显性效应、互作效应及微效多基因的互作和连锁作用,提出了多基因体系的假说,这些已成为数量遗传学研究的内容。我国起步较晚,庄巧生于1962年提出数量性状的变异是遗传和环境两
Quantitative traits, also known as continuous variation traits, such as crop yield and its related economic traits (such as yield, grain weight, plant height, growth period, etc.), these traits are controlled by the micro-multi-gene, they are susceptible to environmental Affect and mutation. As early as 1909 Nilson-Ehle first proposed a multi-factor hypothesis of quantitative traits. East (1910) also argues that the inheritance of quantitative traits is governed by a series of independent genes and the effects of these genes are additive. This concept was further developed by Mather (1949) who investigated the variation and its components of quantitative traits, the role of genes, additive effects, dominant effects, interaction effects and the interaction and linkage of the multipotent genes, Proposed the hypothesis of multi-gene system, which has become the content of quantitative genetics. Our country started late, Zhuang Qiao Sheng in 1962 proposed quantitative traits of variation is genetic and environmental two