试论杨允奎估算特殊配合力效应的简便方法

<正> 杨允奎(1965)在《玉米自交系数量性状遗传研究初步报告》的遗稿中,曾提出计算特殊配合力效应既简便又实用的一种方法,不幸在杨氏病逝之前未获悉他提出此法的意图和见解。为继承和引伸杨氏未完的研究工作。本文试图运用数量遗传学的原理和方法论述杨氏简法的理论依据,分析该法与现行方法的代数学关系并比较各种方法配合实际资料的吻合程度,以判断其可行性。

ON THE METHOD OF ESTIMATING SPECIAL COMBINING ABILITY PROPASED BY YANG YUNKUI

This paper deals with the theoretical basis of the method of estimating special combining ability proposed by the late Professor Yang Yunkui (1965) and with its applicability as well. From the quantitative genetie variation point of view, the genetical assumption derived from Yang's method appears to be quite valid and leads to a slight modification of the generally accepted statistical model for combining ability analysis. With algebraic manipulation, the authors have found ou the relationships by which the estimates obtained by different methods under discussion can be transformed and predicted from one another. For illustration, two examples are given. The results show that to combining ability analysis Yang's mothod is more applicable.