基于性状因果关系的水稻产量结构的通径模型及其分析

Path Model Based on Causality of the Compositive Factors of Rice Yield and Its Analysis

针对现有水稻产量通径分析中存在的一些问题 ,提出了具有确定因果关系的水稻产量构成因素与产量的通径模型 ;在性状为因果关系的通径分析中 ,给出了能按生物学规律解释的间接效应计算方法 ;认为用效应总和与总决定程度决策主攻因素才能与客观相符。

In view of some problems in the existing path analysis of rice yield, the path model based on the causality between the compositive factors of rice yield was put forward. The method of calculating indirect effects that can be explained from biological views was given in the path analysis of rice yield. The authors held that objective conclusions could be obtained only by using the total effect and total determinant level to decide the main attacked factors.