南方农业学报2017，Vol.48Issue(1)：26-30,5.DOI:10.3969/j:issn.2095-1191.201701.26
抗稻瘟病优质籼型水稻不育系青A选育及应用
Breeding and utilization of good-quality indica rice CMS line Qing A with blast resistance
摘要
Abstract
[Objective]The present study bred new CMS lines with blast resistance and good quality,and accordingly bred hybrid varieties with blast resistance and good quality,in order to provide upgraded varieties and ensure grain security.[Method]Taking blast-resistant rice Gui 2 as parent,crossed and multiple-crossed Gui 2 with offspring of Shan B×Bo B.Then selected lines back-crossed with Bo A and bred into indica rice CMS line Qing A.Qing A test-crossed with restorer lines and obtained quality hybrid variety with blast resistance.[Result]Qing A enjoyed following features:blast resistance level 1-3,head rice rate 58.5％,kernel length 5.4 mm,length-width ratio 3.0,chalky rice rate 4％,chalkiness degree 0.5％,transparency grade 2,alkali spread value (ASV) 6.3,gel consistency 68 mm,amylose content 25.1％,pollen sterility 100.000％.Hybrid combinations obtained through test-crossing with Qing A had following advantages:response to temperature,high yield,good grain quality and strong resistance.[Conclusion]Qing A is a CMS line with strong blast resistance,good grain quality,complete pollen sterility,stable sterility,favorable flowering habits,excellent agronomic trait and high combining ability.Its hybrid combinations show wide adaptability,high yield,good grain quality and strong blast resistance.关键词
籼型杂交稻/不育系/青A/抗稻瘟病/选育/配组Key words
indica hybrid rice/CMS line/Qing A/blast resistance/breeding/test cross分类
农业科技引用本文复制引用
周萌,陈仁天,梁世荣,邓国富,梁海福,周维永,戴高兴,高利军,陈韦韦,秦钢,陈荣林..抗稻瘟病优质籼型水稻不育系青A选育及应用[J].南方农业学报,2017,48(1):26-30,5.基金项目
广西八桂学者专项项目(桂人才通字[2011]4号) （桂人才通字[2011]4号）
广西科学研究与技术开发计划项目(桂科合14125008-2-4) （桂科合14125008-2-4）
国家水稻产业技术体系南宁综合试验站建设项目(CARS-01-72) （CARS-01-72）
国家现代农业产业体系广西创新团队(水稻)项目(nycytxgxcxtd-01-01) （水稻）
