棉花抗病丰产核雄性不育两用系的选育

Breeding of Cotton Genetic Male Sterile Lines with High Yield and Diseases Resistance

[目的]选育棉花抗病丰产核雄性不育两用系。[方法]利用棉花优良骨干核不育系GA18,选育出了抗病丰产新不育系RA14、RA15。[结果]RA14、RA15均具有育性稳定、败育彻底、配合力高和植株生长势强等特点;组合测配表明,RA14宜与品质优的恢复系搭配,RA15可与大铃的恢复系搭配。[结论]两个新不育系材料各具优点,可选育出不同类型的棉花新组合,为棉花抗病丰产杂交品种选育提供新材料。

[Objective] The aim was to breed new cotton genetic male sterile lines with high yield and diseases resistance.[Methods] Two new cotton genetic male sterile lines,RA14 and RA15,were bred from the excellent genetic male sterile line GA18.[Result] They were possessed of resistance to disease,high yield,stable fertility,thorough abortion,high general combining ability and strong growth potential.The hybrid combinations test results showed that,in order to create fine combination,RA14 should be crossed with restorers of high fiber quality,and RA15 with restorers of big bolls.[Conclusion] Two new male sterile lines have their own advantages,different types of new cotton combinations can be selected to provide new materials for breeding of cotton genetic male sterile lines with high yield and diseases resistance.