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以长江中游地区夏大豆品种资源中随机抽取的９４个品种为材料，运用典型相关分析方法研究品种的蛋白质含量。油分含量、产量性状及其它农艺性状间的相互关系，同时利用通径分析方法研究产量、产量构成因素及与形态及生育期性状之间的关系。主要结果是：产量与产量构成因素之关系较大，与形态数量性状之关系次之，与生育期性状之关系较小。产量构成三因素中以荚数／株、百粒重对产量，生育前期及分枝数对荚数／株，生育前期及生育后期长短对百粒重有较大的直接作用。
Ninety-four cultivars randomly selected from the summer soybean cultivars in the middle reaches of the Yangtze River were used as materials, and the canonical correlation analysis method was used to study the protein content of the cultivars. Oil content, yield traits and other agronomic traits. At the same time, the relationship between yield, yield components and morphological and growth traits was studied by using the path analysis method. The main results are as follows: The relationship between yield and yield components is larger, followed by the relationship between morphological and quantitative traits, and the relationship between yield and trait traits. Yield composition of the three factors in the pods / plant, 100 grain weight on the yield, early growth and branch number on the pods / plant, pre-and post-growth of the length of a hundred weight has a greater direct effect.