水稻两系不育系营S的选育与应用

Breeding and Application of TGMS Line Ying S in Rice

营S是用C815S与含马来西亚野生稻亲缘的中间材料SB89杂交,F1代作母本再与C815S回交,后代利用海南自然低温和人工低温冷灌处理对育性进行筛选,经过5 a 9代的定向培育成的不育起点温度低、异交率高的两系不育系。2019年3月通过江西省农作物品种审定委员会审定。

Ying S,derived from the cross of C815S/SB89(a breeding material with Malaysia wild rice genetic background)//C815S,is a new thermo-sensitive genic male sterile(TGMS)line with low critical sterility-inducing temperature and high outcrossing rate in rice,developed by directional selection in male sterility under the natural low temperature conditions in Hainan or through the treatments of artificial low temperature water irrigation over nine generations of five years.It was registered by Jiangxi Provincial Crop Variety Appraisal Committee in March,2019.