论文部分内容阅读
本研究利用4个对锈病抗性反应不同的大豆品种,配制双列杂交,并采用离体叶片人工接种鉴定F_1、F_2、B_1C_1、B_1C_2、杂种抗性的方法,研究了大豆抗锈病的遗传。研究结果表明,4个品种的抗锈性遗传基础显著不同,抗病品种PI459025的抗锈性受一个显性基因控制,耐病品种的耐病性受多基因控制,并有超显性作用存在。抗性的回交效应明显,受细胞核基因控制。抗性的一般配合力和特殊配合力均重要,抗性的广义遗传力和狭义遗传力均较高。
In this study, four soybean cultivars with different resistance to rust were used to study the inheritance of soybean rust resistance by using double row hybridization. The artificial inoculation of in vitro leaves was used to identify F_1, F_2, B_1C_1 and B_1C_2. The results showed that the genetic basis of rust resistance of four cultivars was significantly different. The resistance of PI459025 was controlled by a dominant gene. The disease resistance of the resistant varieties was controlled by multiple genes, and the super dominant effect existed. Resistant backcross effect is obvious, controlled by the nuclear gene. The general combining ability and the special combining ability of resistance are important, and the general heritability and narrow heritability of resistance are high.