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玉米单株籽粒产量的构成因素——百粒重、行粒数、穗行数、穗粗和穗长等经济性状,在同一遗传背景和近似生态环境中发育,彼此对立统一,协调消长。试验通过玉米经济性状的遗传相关与通径系数分析,说明了株粒重及构成株粒重的各经济性状间的相关性,各经济性状影响株粒重的途径及各自作用的相对重要性,为修订选择指标提供依据。
The components of maize yield per plant, such as 100-grain weight, number of rows per plant, number of rows per ear, ear diameter and ear length, developed in the same genetic background and approximate ecological environment, which were in opposition to each other and coordinated with each other. Through the genetic correlation and path coefficient analysis of economic traits in maize, the correlation between the grain weight and the economic traits that constitute the plant grain weight, the ways of economic traits affecting grain weight per plant, and the relative importance of their respective roles, Provide a basis for revising the selection index.