Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.)
Salinity is a major factor limiting rice yield in coastal areas of Asia. To facilitate breeding salt tolerant rice varieties, the whole-plant growth duration salt tolerance (ST) was genetically dissected by phenotyping two sets of BC2F5 introgression lines (ILs) for four yield traits under severe na...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2014-08-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311913605754 |
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| author | Lu CHAI Jian ZHANG Xiao-biao PAN Fan ZHANG Tian-qing ZHENG Xiu-qing ZHAO Wen-sheng WANG Ali Jauhar Jian-long XU Zhi-kang LI |
| author_facet | Lu CHAI Jian ZHANG Xiao-biao PAN Fan ZHANG Tian-qing ZHENG Xiu-qing ZHAO Wen-sheng WANG Ali Jauhar Jian-long XU Zhi-kang LI |
| author_sort | Lu CHAI |
| collection | DOAJ |
| description | Salinity is a major factor limiting rice yield in coastal areas of Asia. To facilitate breeding salt tolerant rice varieties, the whole-plant growth duration salt tolerance (ST) was genetically dissected by phenotyping two sets of BC2F5 introgression lines (ILs) for four yield traits under severe natural salt stress and non-stress filed conditions using SSR markers and the methods of advanced backcross QTL (AB-QTL) analysis and selective introgression. Many QTLs affecting four yield traits under salt stress and non-stress conditions were identified, most (>90%) of which were clustered in 13 genomic regions of the rice genome and involved in complex epistasis. Most QTLs affecting yield traits were differentially expressed under salt stress and non-stress conditions. Our results suggested that genetics complementarily provides an adequate explanation for the hidden genetic diversity for ST observed in both IL populations. Some promising Huanghuazhan (HHZ) ILs with favorable donor alleles at multiple QTLs and significantly improved yield traits under salt stress and non-stress conditions were identified, providing excellent materials and relevant genetic information for improving rice ST by marker-assisted selection (MAS) or genome selection. |
| format | Article |
| id | doaj-art-52006894e24243e8b062338c6e2d8c8a |
| institution | Matheson Library |
| issn | 2095-3119 |
| language | English |
| publishDate | 2014-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj-art-52006894e24243e8b062338c6e2d8c8a2025-08-02T07:55:11ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192014-08-0113816091620Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.)Lu CHAI0Jian ZHANG1Xiao-biao PAN2Fan ZHANG3Tian-qing ZHENG4Xiu-qing ZHAO5Wen-sheng WANG6Ali Jauhar7Jian-long XU8Zhi-kang LI9National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.ChinaNational Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.ChinaCrop Research Institute, Taizhou Academy of Agricultural Sciences of Zhejiang Province, Linhai 317000, P.R.ChinaNational Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.ChinaNational Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.ChinaNational Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.ChinaNational Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.ChinaInternational Rice Research Institute, DAPO 777, Metro Malina, The PhilippinesNational Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China; Correspondence LI Zhi-kang, Tel: +86-10-82105857; XU Jian-long, Tel: +86-10-82105854, Fax: +86-10-82108559National Key Facility for Crop Gene Resources and Genetic Improvement/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China; Correspondence LI Zhi-kang, Tel: +86-10-82105857; XU Jian-long, Tel: +86-10-82105854, Fax: +86-10-82108559Salinity is a major factor limiting rice yield in coastal areas of Asia. To facilitate breeding salt tolerant rice varieties, the whole-plant growth duration salt tolerance (ST) was genetically dissected by phenotyping two sets of BC2F5 introgression lines (ILs) for four yield traits under severe natural salt stress and non-stress filed conditions using SSR markers and the methods of advanced backcross QTL (AB-QTL) analysis and selective introgression. Many QTLs affecting four yield traits under salt stress and non-stress conditions were identified, most (>90%) of which were clustered in 13 genomic regions of the rice genome and involved in complex epistasis. Most QTLs affecting yield traits were differentially expressed under salt stress and non-stress conditions. Our results suggested that genetics complementarily provides an adequate explanation for the hidden genetic diversity for ST observed in both IL populations. Some promising Huanghuazhan (HHZ) ILs with favorable donor alleles at multiple QTLs and significantly improved yield traits under salt stress and non-stress conditions were identified, providing excellent materials and relevant genetic information for improving rice ST by marker-assisted selection (MAS) or genome selection.http://www.sciencedirect.com/science/article/pii/S2095311913605754ricewhole plant growth duration salt tolerancequantitative trait loci (QTLs)epistasis |
| spellingShingle | Lu CHAI Jian ZHANG Xiao-biao PAN Fan ZHANG Tian-qing ZHENG Xiu-qing ZHAO Wen-sheng WANG Ali Jauhar Jian-long XU Zhi-kang LI Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.) Journal of Integrative Agriculture rice whole plant growth duration salt tolerance quantitative trait loci (QTLs) epistasis |
| title | Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.) |
| title_full | Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.) |
| title_fullStr | Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.) |
| title_full_unstemmed | Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.) |
| title_short | Advanced Backcross QTL Analysis for the Whole Plant Growth Duration Salt Tolerance in Rice (Oryza sativa L.) |
| title_sort | advanced backcross qtl analysis for the whole plant growth duration salt tolerance in rice oryza sativa l |
| topic | rice whole plant growth duration salt tolerance quantitative trait loci (QTLs) epistasis |
| url | http://www.sciencedirect.com/science/article/pii/S2095311913605754 |
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