贵州农业科学2025，Vol.53Issue(5)：1-6,6.DOI:10.3969/j.issn.1001-3601.2025.05.001
抗稻瘟病杂交稻旱优786的特征特性与稻瘟病抗性基因分析
Analysis on Rice Blast Resistance Genes and Characteristics of Blast Resistance Hybrid Rice Hanyou 786
摘要
Abstract
[Objective]The blast resistant gene source of hybrid rice was explored to provide the germplasm foundation for breeding blast resistant rice varieties.[Method]Taking blast resistant hybrid rice Hanyou 786 as the research object,the characteristics of Hanyou 786 were comprehensively evaluated based on the regional trial data.The resistance of Hanyou 786 to rice blast was identified and analyzed in 6 provinces of the middle and lower reaches of the Yangtze River,and the fluorescent molecular markers of 16 blast resistance genes of its male parent Hanhui 786 and female parent Huhan 7A were detected.[Result]In the regional test of late-maturing medium rice varieties in Hubei Province,the yield of Hanyou 786 was 717.04 kg/667m2 and 657.53 kg/667m2 respectively in 2020 and 2021.Compared with the control variety Fengliangyou No.4,the yield of Hanyou 786 increased by 7.52％and 4.21％,respectively,and the average increment was up to 5.91％.The brown rice rate,milled rice rate,head milled rice rate,chalkiness rate,chalkiness degree,amylose content and gel consistency was respectively 80.7％,71.2％,60.7％,20.0％,4.9％,16.2％and 77 mm.The rice quality reached the grade three high-quality rice of Cooking Rice Variety Quality(NY/T 593-2013)in agricultural industry standard.Hanyou 786 showed moderate resistant to rice blast.Hanyou 786 contained 2 homozygous genes of rice blast resistance(Pib and Pi54)and 8 heterozygous genes(Pi2,Pita,Pi5,Pit,Pi46,Pi33,Pi41 and Pid2).The male parent contained 7 homozygous genes of rice blast resistance(Pi2,Pita,Pi5,Pit,Pib,Pi54 and Pid2),and the female parent contained 5 homozygous genes(Pib,Pi54,Pi46,Pi33 and Pi41),among which Pib and Pi54 were blast resistance genes shared by both parents.[Conclusion]Hanyou 786 has good yield,wide adaptability and strong stress resistance,which can be popularized and applied as a high quality variety with resistant to rice blast.关键词
旱优786/杂交稻/稻瘟病/抗性基因/荧光分子标记Key words
Hanyou 786/hybrid rice/rice blast/resistance gene/fluorescent molecular marker分类
农业科技引用本文复制引用
韩金玲,刘开强,齐金岗,陈颖,张雷,沙爱华,郭嗣斌,李孝琼,李明寿..抗稻瘟病杂交稻旱优786的特征特性与稻瘟病抗性基因分析[J].贵州农业科学,2025,53(5):1-6,6.基金项目
广西重点研发计划项目"绿色低碳排节水抗早稻种质创制及新品种选育"(桂科AB23026089) （桂科AB23026089）
上海市优秀学术/技术带头人计划项目"绿色低碳排放节水抗旱稻新品种选育与推广"(22XD1433800) （22XD1433800）
广西农业科学院基本科研业务专项"节水抗旱稻种质创制与新品种选育"(桂农科2023YM65) （桂农科2023YM65）
