粳型光敏核不育系31111S的育性稳定性及测配优势的初步研究  

PRELIMINARY STUDY OF A LATE MATURING JAPONICA PHOTOPERIOD SENSITIVE GENIC MALE STERILE RICE (PGMR) 31111S

作　　者：万经猛[1] 李泽炳[1] 杨书化[1] 靳德明[1] 刘良军[1] 

机构地区：[1]华中农业大学农学系,武汉430070

出　　处：《华中农业大学学报》1990年第4期450-455,共6页Journal of Huazhong Agricultural University

摘　　要：新育成的晚粳型光敏核不育系31111S,在1988年(正常气候)和1989年(异常气候)分别进行了分期播种试验。在长日照季节,每年观察了1000株以上,全部单株都为不育,且平均套袋不实率和花粉不育率分别达100%和>99.5%。植株表现稳定不育的抽穗期达30天以上。在短日照季节,自然结实率达50%以上。结果表明31111S是一个典型的光周期敏感雄性不育系。以31111S为母本与6个广亲和品种杂交配组,产量较对照增产为11.36%至69.01%,高于对照品种鄂宜105。31111S/B5580AI-15(粳爪哇)产量优势最高。A newly bred japonica late maturing PGMR 31111S was tested with different seedingtime in 1988 (normal climate) and 1989(abnormal climate), respectively. In long dayseason, more than 1000 plants were observed each year. All plants were sterile andthe average bagged seed sterility and pollen sterility were 100% and>99.5% respectively.The heading period when plants showed stable sterility was more than 30 days. In shortday season, the natural seed setting rate reached 50% or more. The results indicate31111S is a typical photoperiod sensitive male sterile line. Using as a female parent, 31111S was crossed with 6 wide compatible varieties.Standard heterosis of grain yield ranging from 11.36% to 69.01% over a check varietyE-yi 105 were observed. 31111S/B5580AI-15(japonica/javanica)has the highest grainyield heterosis.

关 键 词：水稻 光敏核不育 育性 杂种优势 

分 类 号：S511.103.5[农业科学—作物学]