文献类型: 外文期刊
作者: Zhang, Y. -S.;Jiang, L.;Liu, X.;Liu, S.;Chen, L.;Wan, J.;Wan, J.
作者机构:
关键词: rice;CSSL;heading date;QTL
期刊名称: PLANT BREEDING
ISSN: 0179-9541
年卷期: 2011 年 130 卷 2 期
页码:
收录情况: SCI
摘要: P>The inheritance of heading date (HD) in rice was investigated using a set of lines in which chromosome segments of the photoperiod- and temperature-sensitive male sterile line Peiai 64S had been incorporated into a genetic background of the cv. 9311. The flowering time of each line was contrasted with that of cv. 9311 in four distinct environments: natural long days (13.2-14.2 h photoperiod) and artificially shortened days (9 h photoperiod) at Nanjing; and natural (low) temperature and enhanced temperature at Hainan. A set of 21 heading date quantitative trait loci (QTL) was identified, covering eight of the 12 rice chromosomes, and their dependence on photoperiod and/or temperature was characterized. Two of the QTL were photoperiod-sensitive, and eight were insensitive; while two were temperature-sensitive and four insensitive; the remaining five QTL were independent of both temperature and photoperiod. Based on its segregation in an F-2 population bred from the cross CSSL C053 x cv. 9311, the temperature- and photoperiod-insensitive QTL qHd-8-4 was mapped within a segment of chromosome 8 flanked by the SSR marker RM22469 (1.9 cM) and RM72 (2.4 cM).
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