文献类型： 外文期刊

作者： Wang, JK ¹ ; Gai, JY ² ;

作者机构： 1.Henan Acad Agr Sci, Lab Ctr, Zhengzhou 450002, Henan, Peoples R China

2.Nanjing Agr Univ, Soybean Res Inst, Nanjing 210095, Peoples R China

关键词： agromyzid beanfly (Melanagromyza sojae Zehntner);graphical analysis;mixed major gene and polygene inheritance model;segregation analysis;soybean

期刊名称：EUPHYTICA （ 2020影响因子：1.895； 五年影响因子：2.181 ）

ISSN： 0014-2336

年卷期： 2001 年 122 卷 1 期

页码：

收录情况： SCI

摘要： A quantitative trait could be controlled by a few major genes and many polygenes. Distinguishing the effects of major genes from polygenes and/or environments is important for understanding the expression of a major gene in relation to its genetic background, and for predicting the segregation of a cross in breeding. Our objective was to re-analyze the resistance of soybean to agromyzid beanfly by a mixed inheritance model. Number of insects in stem (NIS) was used as an indicator of resistance. The previous result from the segregation ratio of resistance and susceptibility was that resistance was controlled by one dominant gene. The major results from the mixed inheritance model were (1) the inheritance of resistance was controlled by one major gene along with minor genes; (2) Additive and dominance effects of minor genes were generally less than those of the major gene and varied among crosses, indicating different minor gene systems; (3) Heritability was higher for the major gene than for the minor genes; (4) The F-2 plants and F-2:3 lines were classified into appropriate genotypes according to their posterior probabilities and the critical value to distinguish resistant and susceptible plants was given for NIS based on the classification. These results indicated that mixed major gene and polygene genetic analysis was superior to the frequently used classical Mendelian method.