以辣椒雄性不育系8A为不育源，以优良自交系2为回交亲本材料，经过连续5代回交，选育出不育性稳定、综合性状优良的辣椒雄性不育系2A。其不育株率达到100%，不育性稳定，且综合性状优良，果实商品性好。利用不育系2A与32个辣椒自交系测交，仅有4个组合全部植株育性恢复并能正常结果。

Taking the male sterile line 8A of pepper as the sterile source, and taking the excellent inbred line 2 as the parent material for backcross， an excellent new male sterile line 2A was acquired through five generations backcross， which had stable male sterility and excellent comprehensive traits. It has a sterility rate which reached 100%， with stable sterility， good comprehensive characters and good commercialization of fruit. Only 4 combinations of male sterile line 2A and 32 pepper inbred lines restored fertility and could bear normal fruit.

S641.3

国家重点研发计划课题(2017YFD0101903)、甘肃省科技重大专项计划(17ZD2NA015)、甘肃省农业科学院科研条件建设及成果转化项目(2017GAAS51)、农业部西北地区蔬菜科学观测实验站项目(2015-A2621-620321-G1203-066)。