抽穗开花期耐热性水稻恢复系鉴定筛选  

Selection and Identification of Rice Restorer Line with Heat Tolerance at Flowering Stage

作　　者：文绍山[1,2] 张林 焦峻[1,2] WEN Shao-shan;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 618000,Sichuan,China;Luzhou Branch of National Rice Improvement Center,Luzhou 646100,Sichuan,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：《湖北农业科学》2018年第4期15-18,共4页Hubei 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(2016ZYPZ-033)

摘　　要：为了选育耐热性好的水稻(Oryza sativa L.)新恢复系,利用人工气候室,对36份水稻恢复系材料在抽穗扬花期高温胁迫条件下进行耐热性研究。结果表明,在高温胁迫条件下,不同水稻恢复系材料的结实率和结实率下降率达显著水平。聚类分析表明,将36份材料分成耐热能力不同的4类,其中泸恢17、RHTR20、R1862和泸恢602属强耐热性恢复系。To screen rice restorer lines with high heat tolerance,the heat tolerance of36rice restorer lines was identified through artificial climate chamber at flowering stage.The results showed that the differences in seed setting rate and the reduction rate of seed setting rate of rice restorer lines were very significant under high temperature treatment.The36rice restorer lines were classified into4groups with different heat tolerance based on clustering analysis.It indicated that rice restorer lines Luhui17,RHTR20,R1862and Luhui602had good heat tolerance.

关 键 词：水稻(Oryza SATIVA L.) 恢复系 耐热性 高温胁迫 开花期 

分 类 号：S511[农业科学—作物学]