摘要
[目的]开展优质三系不育系的选育,以提高杂交稻的稻米品质。[方法]采用自育中间材料TZB11-2与JYB2-9杂交。经7年杂交与回交转育,育成植株矮壮、叶色淡绿、不育性稳定的优质长粒型三系不育系‘又香A’。分析了‘又香A’主要特征特性。[结果]细胞质雄性不育系‘又香A’于2021年通过广西壮族自治区科学技术厅科技成果鉴定[桂农品审鉴(稻)2021003号]。该不育系异交特性好,柱头平均总外露率55.9%,双边外露率49.8%。‘又香A’配合力好,先后配组出‘又香优龙丝苗’‘又香优香丝苗’‘又香优雅丝香’‘又香优郁香’和‘又香优又丝苗’等高产、优质的三系杂交稻组合,并通过国家级或省级水稻新品种审定。[结论]细胞质雄性不育系‘又香A’农艺性状优良、稻米品质优、配合力强,应用前景广泛。
[Purpose] In order to improve the quality of hybrid rice, this study carried out the breeding of three lines of high quality sterile lines. [Method] Using self-fertile hybrid materials of TZB11-2 and JYB2-9, after 7 years of hybridization and backcrossing, the high quality long-grain sterile three-line ‘Youxiang A’ with short and strong plants, light green leaves and stable sterility was bred. The main characteristics of the three-line ‘Youxiang A’ were analyzed. [Result] The cytoplasmic male sterile line ‘Youxiang A’ was identified as a scientific achievement [Gui Agriculture Product Authentication(Rice) No.2021003] by the Department of Science and Technology of Guangxi Zhuang Autonomous Region in 2021. The male sterile line had good outcrossing characteristics, and the total rate of stigma exposure was 55.9%, of which the bilateral exposure rate was 49.8%. ‘Youxiang A’ had good combining ability, and successively produced high-yield and high-quality three-line hybrid rice combinations, such as ‘YouxiangyouLongsimiao’, ‘YouxiangyouXiangsimiao’, ‘YouxiangyouYasixiang’, ‘YouxiangyouYuxiang’ and ‘YouxiangyouYousimiao’, which passed the national or provincial examination and approval as new rice varieties. [Conclusion] ‘Youxiang A’ is a cytoplasmic male sterile line with good agronomic characters, high rice quality and strong combining ability, which has wide application prospects.
作者
何懿
HE Yi(Guangxi Zhaohe Seed Industry Co.,LTD,Nanning,Guangxi 530000,China)
出处
《亚热带农业研究》
2022年第3期151-154,共4页
Subtropical Agriculture Research
基金
广西科技重大专项(桂科AA16380021)。
关键词
水稻
优质
细胞质雄性不育系
选育
利用
rice
high quality
cytoplasmic male sterile line
breeding
utilization
