大豆荚粒空间分布特性及其与产量的相关性

摘要

为高产大豆育种提供依据,以69个夏大豆品系为材料,通过田间试验调查其性状,研究大豆冠层荚粒空间分布特性及其与产量的关系.结果表明:1)大豆冠层各部分荚粒数量分布不均等、变异幅度存在差异.2)顶部荚数、顶部粒数、上部荚数、上部粒数与大豆产量呈显著或极显著相关,且其变异系数均较大,分别为34.1％、35.1％、20.3％和22.4％,在大豆育种中应选择植株顶部荚(粒)数、上部荚(粒)数较多的品系为材料.%69 summer soybean lines are tested by a field experiment to study the spatial distribution characteristics of pod-seed and correlations between yield and pod-seed distribution and to provide the scientific basis for breeding of soybean with high yield.Result:1) The quantitative distribution of pods and seeds on different parts of soybean canopy is inequality and the variance range is difference also.2)The pod and seed number on top part and pod and seed number on upper part are related to soybean yield significantly or very significantly and their variance coefficients are 34.1％,35.1％,20.3％ and 22.4％ respectively.The lines with higher pod-seed number on top and upper part should be used in soybean breeding.