茄子ER300抗青枯病遗传及在育种中的应用

Resistance of ER300 Eggplant(Solanum melongena L.) Against Genetic Bacterial Wilt (Ralastonia solanacearum) and It’s Application to Breeding

为探明茄子品系ER300的抗青枯病遗传机理,加速茄子抗青枯病育种进程,以抗青枯病茄子品系ER300和感青枯病品系064(北京六叶茄)杂交,F1代群体表现抗病,F2代群体出现抗性分离,经卡方测验,抗感分离比例符合3∶1规律.用感病品系064作轮回亲本的BC1P2代群体出现抗性分离,经卡方测验,抗感分离比例符合1∶1规律,说明其抗性遗传为完全显性遗传,且符合1对显—隐性基因的分离规律.利用其与其他品系配组选育出了中国第一个F1代抗病砧木金刚茄砧.

To probe into the genetic resistant law to bacterial wilt （BW） in eggplant ER300 and quicken the breeding of resistance to BW, the genetic studies on resistance to BW is carded out. By crossing ER300 of resistance to bacterial wilt （BW） with 064（Beijing six-leaf eggplant） of susceptibility to BW, Fl shows resistance to BW, F2 is the generation segregation of resistances, resistance and susceptibility segregation ratios were 3 ： 1 by X^2 test. BC1P2 progenies of cross F1 with susceptible 064 is the generation segregation of resistances, resistance and susceptibility segregation ratios were 1：1 by X^2 test. It shows that resistant genetic law to BW is completely showing-genetic, it suits one double showing-recessive genes segregation law. Breeding inland first Fl resistant bickiron--Jingangqiezhen.