抽穗开花期耐热性水稻恢复系种质的筛选  

Screening Rice Restorer Line Germplasm with Heat Tolerance at Heading-Flowering Stage

作　　者：文绍山[1,2] 张林 焦峻[1,2] WEN Shaoshan;ZHANG Lin;JIAO Jun(Rice and Sorghum Research Institute,Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic Breeding,Ministry of Agriculture,Deyang,Sichuan 618000;Luzhou Branch of National Rice Improvement Center,Luzhou,Sichuan 646100,China)

机构地区：[1]四川省农业科学院水稻高粱研究所/农业部西南水稻生物学与遗传育种重点实验室,四川德阳618000 [2]国家水稻改良中心四川泸州分中心,四川泸州646100

出　　处：《贵州农业科学》2018年第3期7-10,共4页Guizhou Agricultural Sciences

基　　金：四川省财政育种优秀论文基金专项(2015LWJJ-006);四川省"十三五"农作物育种攻关项目(2016NYZ0028);四川省财政育种种质资源创新和突破性新品种培育工程项目(2016ZYPZ-033)

摘　　要：为筛选出培育耐热性杂交水稻新品种的水稻恢复系,对36份水稻恢复系在抽穗开花期进行耐热性研究。结果表明:在高温胁迫下,不同水稻恢复系的结实率及其结实率下降率达显著水平;36个水稻恢复系按耐热能力聚类可分为4类,其中泸恢17、RHTR20、R1862和泸恢602属强耐热性水稻恢复系,可直接利用其配制耐高温杂交稻新组合,也可作为培育耐高温水稻的种质资源加以利用。For breeding heat-resistant hybrid rice restorer lines,a heat resistance study was conducted on 36 rice restorer materials at heading-flowering stage.Results:Rice seed setting rate and its declining rate of different rice restorer lines reached significant level under high temperature stress;The 36 rice restorer lines were divided into four types according to the heat resistance capacity and there were four rice restorer lines Luhui17,RHRT20,R1862 and Luhui602 with strong heat resistance.The four rice materials can be used directly to make new heat-tolerant hybrid rice combinations,as well as germplasm resources to develop new rice materials with high temperature tolerance.

关 键 词：水稻 恢复系 耐热性 结实率 

分 类 号：S511[农业科学—作物学]