? <div>Mapping and genetic validation of a grain size QTL <em>qGS7</em>.1 in rice (<em>Oryza sativa</em> L.)</div> 亚博yabo娱乐平台,yabo sport,yabo2018体育
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? ? 2019, Vol. 18 Issue (8): 1838-1850???? DOI: 10.1016/S2095-3119(18)62113-6
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Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.)
XUE Pao1, ZHANG Ying-xin1, LOU Xiang-yang1, ZHU Ai-ke1, 2, CHEN Yu-yu1, 3, SUN Bin1, 4, YU Ping1, CHENG Shi-hua1, CAO Li-yong1, ZHAN Xiao-deng1?
1 Zhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China
2 Nanchong Academy of Agricultural Sciences, Nanchong 637000, P.R.China
3 National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, P.R.China
4 Institute of Crop Breeding and Cultivation, Shanghai Academy of Agricultural Sciences, Shanghai 201403, P.R.China
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Abstract?
Grain size is a major determinant of grain weight, which is one of the components of rice yield.? The objective o this study was to identify novel, and important quantitative trait loci (QTLs) for grain size and weight in rice.? QTLs were mapped using a BC4F4 population including 192 backcross inbred lines (BILs) derived from a backcross between Xiaolijing (XLJ) and recombinant inbred lines (RILs).? The mapping population was planted in both Lingshui (Hainan, 2015) and Fuyang (Zhejiang, 2016), with the short- and long-day conditions, respectively.? A total of 10 QTLs for grain length, four for grain width, four for the ratio of grain length to width, and 11 for grain weight were detected in at least one environment and were distributed across 11 chromosomes.? The phenotypic variance explained ranged from 6.76–25.68%, 14.30–34.03%, 5.28–26.50%, and 3.01–22.87% for grain length, grain width, the ratio of grain length to width, and thousand grain weight, respectively.? Using the sequential residual heterozygotes (SeqRHs) method, qGS7.1, a QTL for grain size and weight, was mapped in a 3.2-Mb interval on chromosome 7.? No QTLs about grain size and weight were reported in previous studies in this region, providing a good candidate for functional analysis and breeding utilization.
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Articles by authors
XUE Pao
ZHANG Ying-xin
LOU Xiang-yang
ZHU Ai-ke
CHEN Yu-yu
SUN Bin
YU Ping
CHENG Shi-hua
CAO Li-yong
ZHAN Xiao-deng
Key wordsrice (Oryza sativa L.) ?? ?quantitative trait loci??? ?grain size??? ?grain weight??? ?residual heterozygote?? ??
Received: 2018-04-04; Accepted: 2018-09-17
Fund: This work was supported by grants from the National Key Research and Development Program of China (2018YFD0100806), the Zhejiang Provincial Natural Science Foundation of China (LY18C130008), the National Natural Science Foundation of China (31521064), the Major Project of the Genetically?Modified and National Key Transgenic Research Projects, China (2016ZX08001-002), the Super Rice Breeding Innovation Team and Rice Heterosis Mechanism Research Innovation Team of the Chinese Academy of Agricultural Sciences Innovation Project (CAAS-ASTIP-2013-CNRRI).
Corresponding Authors: Correspondence CAO Li-yong, Tel/Fax: +86-571-63370329, E-mail: caolycgf@mail.hz.zj.cn; ZHAN Xiao-deng, Tel/Fax: +86-571-63370265, E-mail: zhanxiaodeng@caas.cn ???
About author: XUE Pao, Tel/Fax: +86-571-63370606, E-mail: 18268126424 @163.com;
Cite this article: ??
XUE Pao1, ZHANG Ying-xin1, LOU Xiang-yang1, ZHU Ai-ke, CHEN Yu-yu, SUN Bin, YU Ping, CHENG Shi-hua, CAO Li-yong, ZHAN Xiao-deng . 2019.
Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.)
. Journal of Integrative Agriculture, 18(8): 1838-1850.
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http://www.chinaagrisci.com/Jwk_zgnykxen/EN/ 10.1016/S2095-3119(18)62113-6 ?????or ????http://www.chinaagrisci.com/Jwk_zgnykxen/EN/Y2019/V18/I8/1838
 
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[1] JIAO Xiao-qiang, WANG Chong, ZHANG Fu-suo. Editorial – Science and Technology Backyard: A novel model for technology innovation and agriculture transformation towards sustainable intensification[J]. Journal of Integrative Agriculture, 2019, 18(8): 1655-1656.
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