不同杂交中稻品种开花期耐高温性鉴定  

Identification of High Temperature Resistance of Mid-season Hybrid Rice at Flowering Period

作　　者：徐富贤[1,2] 周兴兵 张林 蒋鹏[1,2] 刘茂 郭晓艺[1,2] 朱永川 熊洪[1,2] XU Fuxian;ZHOU Xingbing;ZHANG Lin;JIANG Peng;LIU Mao;GUO Xiaoyi;ZHU Yongchuan;XIONG Hong(Rice and Sorghum Research Institute,Sichuan Academy of Agricultural Sciences/Key Laboratory of Southwest Rice Biology and Genetic Breeding,Ministry of Agriculture and Rural Affairs/Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province,Deyang,Sichuan 618000,China;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/农业农村部西南水稻生物学与遗传育种重点实验室/作物生理生态及栽培四川省重点实验室,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：《中国稻米》2020年第1期41-45,共5页China Rice

基　　金：国家现代农业产业技术体系建设专项(CARS-01-25);国家粮食丰产增效科技创新专项(2017YFD0300409-3);四川省财政基因工程项目

摘　　要：2013年、2016年分别以40个杂交中稻品种为材料,在人工气候室和自然高温条件下鉴定了不同品种开花期的耐高温性。结果表明,人工气候室模拟高温下鉴定耐高温指数≥0.5的品种,两种条件下的耐高温指数呈极显著正相关;而人工气候室模拟高温下鉴定的耐高温指数≤0.49的品种,两种条件下的耐高温指数的相关性不显著,原因在于部分在人工气候室模拟高温下鉴定的不耐高温品种在自然条件下因花时早而避开了高温伤害,仍表现出较高的耐高温指数。根据开花期耐高温性可以把杂交水稻分为耐避双重型、耐高温型、避高温型和高温敏感型4种类型。An experiment was conducted to determine the effects of extreme high temperature on high temperature resistance of midseason hybrid rice at flowering period by applying different sowing dates and intelligent artificial climate chamber in 2013 and 2016,using forty hybrid rice cultivars as materials. The results showed that there were very significant positive correlation between the high temperature resistances under intelligent artificial climate chamber condition and those under natural high temperature condition with varieties of high temperature index over 0.5, but no significant correlation of these varieties of high temperature index below 0.5. The reason is that some varieties with no high temperature resistant in artificial climate chamber still showed a good high temperature re-sistance under natural high temperature condition, because of flower early and avoid the high temperature damage. According to the characteristics of high temperature resistance at flowering period, hybrid rice were divided into 4 types: both of resistance and avoid high temperature type, resistance to high temperature type, avoid high temperature type and high temperature sensitive type.

关 键 词：杂交中稻 开花期 耐高温指数 耐高温类型 

分 类 号：S511.037[农业科学—作物学]