摘要
利用8份光温敏核不育粳稻材料及28份北方寒冷稻作区优良粳稻品种(系)作为原始亲本开展轮回选择育种,育成了吉粳85、吉524、E180和E385等4个具有三系恢复基因的粳型恢复系。这些恢复系性状稳定,恢复度好,测交F1代产量优势明显,表明轮回选择为粳稻恢复系选育提供了一条新的技术途径,并使三系杂交稻在北方寒冷稻作区的大面积推广成为可能。
Four japonica restorer lines with the restoring genes for the genetic-cytoplasmic male sterility including Jijing 85, Ji 524, El80 and E385 have been successfully developed through the breeding method of recurrent selection, using eight japonica PTGMS lines and 28 elite japonica varieties or lines selected from the north cold rice growing area in China as the breeding materials. These restorer lines showed both stable and uniform agronomical characters and a good restoring ability, and their testcrossing F1 hybrids had a strong heterosis in grain yield, which indicates that the recurrent selection provides an effective way in breeding of three-line japonica restorer lines and makes it possible the commercial production of three-line japonica hybrid rice in north cold rice growing area in China.
出处
《杂交水稻》
CSCD
北大核心
2007年第4期7-9,共3页
Hybrid Rice
基金
吉林省科技厅农业重点项目(20060203)
关键词
杂交粳稻
恢复系
轮回选择
育种
japonica hybrid rice
restorer line
recurrent selection
breeding
