金盏花雄性不育两用系的选育

Marigold Breeding of Male Sterile Lines

为了选育适宜于甘肃省种植金盏花杂交新品种,彻底扭转甘肃省金盏花生产用种依赖引进的局面,确保金盏花产业的可持续发展。从2002年开始,利用田间发现的不育株,对金盏花GM-1和GM-2后代分离群体采用二环系选育法进行了大量的保持系及其测交组合的配制,选择出了符合雄性核不育两用系。根据两用系可育株花朵的重瓣或单瓣特性,对获得的株系进行育性比较,从中选出了LYX-1(重瓣)和LYX-2(单瓣)2个优良的雄性不育两用系,不育率达到50%,不育性由一对隐性基因控制,并且生物学性状也基本稳定,可用于杂交组合的配制。

To plant suitable breeding of new hybrid varieties of marigold in Gansu province,completely reverse the province depending on the introduced production of species and ensure the sustainable development of marigold industry,since 2002,the male sterile line with dual-use system have been chosen by using sterile plants found in the field,from which the marigolds GM-1 and GM-2 progeny segregating populations have been tested through cross combination in a large number of maintainers by breeding ring method. By comparison of fertility of the obtained lines,two excellent male LYX-1（Double） and LYX-2（single lobe） ,Sterile ABline have been selected according to the features of fertile plants under the dual system flower petals or ill. The infertility rate is of 50% sterility controlled by a recessive gene,and biological characteristics are stable,which can be used in hybrid combination.