Quantitative Trait Locus Analysis for Rice Yield Traits under Two Nitrogen Levels
文献类型: 外文期刊
第一作者: Feng Yue
作者: Feng Yue;Lin Ze-chuan;Cao Li-yong;Wei Xing-hua;Cheng Shi-hua;Zhai Rong-rong
作者机构:
关键词: nitrogen;quantitative trait locus;rice;yield trait
期刊名称:RICE SCIENCE ( 影响因子:3.333; 五年影响因子:4.226 )
ISSN: 1672-6308
年卷期: 2015 年 22 卷 3 期
页码:
收录情况: SCI
摘要: A recombinant inbred line population derived from a super hybrid rice Xieyou 9308 (Xieqingzao B/Zhonghui 9308) and its genetic linkage map were used to detect quantitative trait loci (QTLs) for rice yield traits under the low and normal nitrogen (N) levels. A total of 52 QTLs for yield traits distributed in 27 regions on 9 chromosomes were detected, with each QTL explaining 4.93%-26.73% of the phenotypic variation. Eleven QTLs were simultaneously detected under the two levels, and 30 different QTLs were detected under the two N levels, thereby suggesting that the genetic bases controlling rice growth under the low and normal N levels were different. QTLs for number of panicles per plant, number of spikelets per panicle, number of filled grains per panicle, and grain density per panicle under the two N levels were detected in the RM135-RM168 interval on chromosome 3. QTLs for number of spikelets per panicle and number of filled grains per panicle under the two N levels, as well as number of panicles per plant and grain density per panicle, under the low N level, were detected in the RM5556-RM310 interval on chromosome 8. The above described QTLs shared similar regions with previously reported QTLs for rice N recycling.
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