论文部分内容阅读
正确的选配亲本组合是杂交育种的关键之一,为能准确地掌握杂交亲本性状的遗传特点,以增强对亲本选配和后代选择的予见性和计划性。从1973年开始,我们结合常规育种试验,对小麦几个主要性状与亲子代间的相关性进行了初步的调查分析。本材料主要分析 F_2与亲本性状的相关关系.一、关于株高的遗传:根据1974和1975年的调查,F_1株高与双亲平均值密切相关,二者的相关系数分别为0.7967、0.9199,回归系数为1.1047和0.9385,都达到十分显著的水平,1979年的调查结果与上述结果基本一致。F_2株高与双亲平均值之间的相关关系
Proper selection of parental combinations is one of the key aspects of crossbreeding. In order to accurately grasp the genetic characteristics of hybrid parents to enhance the parental options and offspring selection and visibility. Since 1973, we conducted a preliminary investigation and analysis of several major traits of wheat and the correlation between parents and offspring in combination with conventional breeding experiments. This material mainly analyzes the correlation between F_2 and its parental traits.First, the heredity of plant height: According to the survey of 1974 and 1975, the F_1 plant height is closely related to the average of both parents, the correlation coefficients of the two are 0.7967,0.9199, The coefficients were 1.1047 and 0.9385, both of which reached a very significant level. The findings of 1979 are consistent with the above results. Correlation between F_2 plant height and parents average