Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.)
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...
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KeAi Communications Co., Ltd.
2019-08-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311918621136 |
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| author | Pao XUE Ying-xin ZHANG Xiang-yang LOU Ai-ke ZHU Yu-yu CHEN Bin SUN Ping YU Shi-hua CHENG Li-yong CAO Xiao-deng ZHAN |
| author_facet | Pao XUE Ying-xin ZHANG Xiang-yang LOU Ai-ke ZHU Yu-yu CHEN Bin SUN Ping YU Shi-hua CHENG Li-yong CAO Xiao-deng ZHAN |
| author_sort | Pao XUE |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-b0c5c1cb46f8453885812fb6ca93b04c |
| institution | Matheson Library |
| issn | 2095-3119 |
| language | English |
| publishDate | 2019-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj-art-b0c5c1cb46f8453885812fb6ca93b04c2025-08-02T16:55:48ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192019-08-0118818381850Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.)Pao XUE0Ying-xin ZHANG1Xiang-yang LOU2Ai-ke ZHU3Yu-yu CHEN4Bin SUN5Ping YU6Shi-hua CHENG7Li-yong CAO8Xiao-deng ZHAN9Zhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China; Correspondence XUE Pao, Tel/Fax: +86-571-63370606Zhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China; Nanchong Academy of Agricultural Sciences, Nanchong 637000, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China; Institute of Crop Breeding and Cultivation, Shanghai Academy of Agricultural Sciences, Shanghai 201403, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.ChinaZhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China; Correspondence CAO Li-yong, Tel/Fax: +86-571-63370329Zhejiang Key Laboratory of Super Rice Research/State Key Laboratory of Rice Biology/China National Rice Research Institute, Hangzhou 310006, P.R.China; Correspondence ZHAN Xiao-deng, Tel/Fax: +86-571-63370265Grain 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.http://www.sciencedirect.com/science/article/pii/S2095311918621136rice (Oryza sativa L.)quantitative trait locigrain sizegrain weightresidual heterozygote |
| spellingShingle | Pao XUE Ying-xin ZHANG Xiang-yang LOU Ai-ke ZHU Yu-yu CHEN Bin SUN Ping YU Shi-hua CHENG Li-yong CAO Xiao-deng ZHAN Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.) Journal of Integrative Agriculture rice (Oryza sativa L.) quantitative trait loci grain size grain weight residual heterozygote |
| title | Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.) |
| title_full | Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.) |
| title_fullStr | Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.) |
| title_full_unstemmed | Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.) |
| title_short | Mapping and genetic validation of a grain size QTL qGS7.1 in rice (Oryza sativa L.) |
| title_sort | mapping and genetic validation of a grain size qtl qgs7 1 in rice oryza sativa l |
| topic | rice (Oryza sativa L.) quantitative trait loci grain size grain weight residual heterozygote |
| url | http://www.sciencedirect.com/science/article/pii/S2095311918621136 |
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