Tolerance of a Restorer Line R1056 to High Temperature and Its Application in Rice Breeding
水稻恢复系R1056的耐热性鉴定及育种应用评价（英文）作者机构：湖北省农业科学院粮食作物研究所湖北武汉430064 湖北省粮食作物种质创新与遗传改良重点实验室湖北武汉430064 主要粮食作物产业化湖北省协同创新中心湖北荆州434025
出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)
年 卷 期：2015年第16卷第12期
页 面：2618-2623页
基 金：Supported by the Fund from Agricultural Science and Technology Innovation Center of Hubei Province(2007-620-001-003) Key Project of Natural Science Foundation of Hubei Province(2014CFA103)~~
主 题：Rice High temperature Tolerance Restorer
摘 要：The tolerance of a restorer line R1056 of rice and its hybrid combinations to high temperature at flowering stage was evaluated by sowing them at three dif- ferent dates and transplanting them into a greenhouse equipped with heating system at flowering stage. Several important agronomic traits of these rice varieties or combinations were also measured. The results revealed that treated by high temper- ature （38 ℃） at flowering stage, the seed setting rate （70.4%）, percentage of dehis- cent anthers （75.5%）, and pollen number per floret （78） of R1056 were close to those of N22, which is tolerant to high temperature, and significantly higher than those of the rice varieties sensitive to high temperature. The seed setting rate, per- centage of dehiscent anthers, and pollen number per floret of the hybrid combina- tions generated from R1056 were smaller than those of R1056, but higher than those of the rice varieties sensitive to high temperature. R1056 had excellent agro- nomic traits, and good combining ability, and its hybrid combinations had low plant height, numerous panicles and high yield, suggesting that R1056 is not only an ex- cellent rice variety with tolerance to high temperature, but also an excellent restorer in three-line hybrid rice breeding.
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