摘要
以高芥酸雄性不育系＂非Ａ＂为母本，低芥酸品系＂８１Ｂ＂作父本测交、转育、回交，经四代获得芥酸含量稳定低于１％的高温型雄性不育系＂８３Ａ＂。不育株率与成都地区１２月下旬至来年元月上旬的平均气温呈负相关。１２月下旬均温在２．３～８．０℃间，以２．３～７．６℃为佳。来年元月上旬均温在４．１～８．６℃间，以低于５℃为最好。在温度变化的条件下，只要掌握细胞质不育系的花器官形态特征与育性的相关指标，在初花期按指标严格筛选，多代回交后即可获得不育株率稳定在９５％或更高的雄性不育系。
Through 4 generations of crossing, testcrossing, sterility transfering and backcrossing of 'Fei A' a high erucic acid content sterile line as the mother, to '81 B', a low erucic acid line as the father, '83 A', a high-temperature type male sterile line with low erucic acid content (<1%) was selected. Its aterility rate was negatively correlated with the average temperature from late December to early January in Chengdu. The average temperature in late December was 2.3～8.0℃, and the optimum temperature for '83A' was 2.3～8.0℃, the average temperature in early January next year was 4.1～8.6℃, while the optimum was 5℃. Under varied temperature condition, if the morphological characters of flower and the criteria concerning sterility could be recoglized correctly, and strictly selected in initial flower stage, male sterile line with sterility rate over 95% could be achieved through several generation's backcrossing.
出处
《西南农业学报》
CSCD
1994年第1期13-17,共5页
Southwest China Journal of Agricultural Sciences
关键词
油菜
低芥酸
三系配套
Brassica napus
Low erucic acid content
Sterile line '83A'
Sterility transfer
