中国野生葡萄及其F_1代抗白粉病的遗传表现

 通过田间自然鉴定的方法，研究了中国野生葡萄９个种３５个株系及其与欧洲葡萄品种种间杂交４个组合的杂种１７１株和自交后代１６株的抗白粉病遗传表现。结果表明，中国野生葡萄及其Ｆ１代在田间自然条件下抗白粉病的表现形式是丰富多样的。中国野生葡萄对白粉病的抗性属于多基因控制的显性独立遗传，在感病的中国野生葡萄中也存在着微效抗病基因。

The Resistance of Chinese Wild Vitis to Uncinula necator and Its Inheritance of F1 Generation

By natural field identification,the resistance of Chinese wild Vitis to Uncinula necator and its inheritance of F, generation were studied with 35 clones of 9 Chinese wild Vitis species, 171 F1 individuals of 4 interspecific cross combinations between Chinese wild Vitis and Vitis vindera cultivars, and 16 individ- uals of self-pollination cross of Chinese wild Vitis. The results showed that the resistant phenotypes to Uncinula necator in Chinese wild Vitis and its F1 generation were rich and diverse. Based on the characteris- tics of the segregation and resistant phenotype to Uncinula necator from the progenies and offsprings of both interspecific hybridization and self-pollination, it suggested that resistant inheritances of Chinese na- tive wild Vitis species and of clones to Uncinula necator were controlled by polygenes, showing dominant independent heredity. There existed minor resistant genes in Chinese wild susceptible Vitis species and clones.