水稻灌浆期间高温对水稻外观品质的影响  

Effects on appearance quality of rice under high temperature during grain filling stage

作　　者：李进波[1] 戚华雄[1] LI Jin-bo;QI Hua-xiong(Institute of Food Crops,Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Food Crop Germplasm Innovation and Genetic Improvement,Wuhan 430064,China)

机构地区：[1]湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室

出　　处：《湖北农业科学》2019年第22期28-30,53,共4页Hubei Agricultural Sciences

基　　金：国家重点研发计划“七大作物育种”重点专项(2017YFD0100300);国家水稻产业技术体系武汉综合试验站项目(CARS-01-63)

摘　　要：分析了2015、2016年湖北省水稻(Oryza sativa L.)品种区域试验33个籼稻参试品种的外观品质,2016年参试品种的平均垩白粒率和平均垩白度比2015年的分别增加了25.5个百分点和101.72%,说明2016年水稻灌浆期间的高温导致稻米垩白粒率和垩白度明显增加。建议利用分子标记辅助选择技术聚合非等位耐热性QTL以培育耐热品种,以及适当推迟中稻的播种期以确保水稻在适温条件下灌浆结实。The appearance quality of 33 indica rice varieties which tested in the regional trial of rice varieties in Hubei province from 2015 to 2016 was analyzed. The average chalky rice rate and chalkiness degree of the varieties in 2016 increased by 25.5 percentage point and 101.72% compared with that in 2015,respectively, indicating that the high temperature during rice filling and seed-setting stages in 2016 resulted in a significant increase in the chalky rice rate and chalkiness degree of rice. It is suggested that non-allele heat-tolerant QTLs should be pyramided by molecular marker-assisted selection(MAS) to breed heat-tolerant varieties, and that the sowing date of middle-season rice should be delayed to ensure that the grain filling and seed-setting stages of rice are under suitable temperature conditions.

关 键 词：水稻(Oryza SATIVA L.) 高温 垩白 分子标记辅助育种 

分 类 号：S511[农业科学—作物学]