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Quantitative Trait Locus Analysis for Rice Yield Traits under Two Nitrogen Levels

文献类型： 外文期刊

作者： Feng Yue 1 ; Zhai Rong-rong 2 ; Lin Ze-chuan 1 ; Cao Li-yong 1 ; Wei Xing-hua 1 ; Cheng Shi-hua 1 ;

作者机构： 1.Chinese Natl Ctr Rice Improvement, State Key Lab Rice Biol, China Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Zhejiang, Peoples R China

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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