QTL mapping for tolerance to anaerobic germination in rice from IR64 and the aus landrace Kharsu 80A
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- Baltazar Miriam D.
- International Rice Research Institute University of the Philippines Department of Biological Sciences, Cavite State University
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- Ignacio John Carlos I.
- International Rice Research Institute
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- Thomson Michael J.
- Department of Soil and Crop Sciences, Texas A&M University
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- Ismail Abdelbagi M.
- International Rice Research Institute
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- Mendioro Merlyn S.
- University of the Philippines
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- Septiningsih Endang M.
- Department of Soil and Crop Sciences, Texas A&M University
書誌事項
- タイトル別名
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- QTL mapping for tolerance to anaerobic germination in rice from IR64 and the <i>aus</i> landrace Kharsu 80A
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<p>Direct seeding of rice often results in poor crop establishment due to unlevelled fields, unpredicted heavy rains after sowing, and weed and pest invasion. Thus, it is important to develop varieties able to tolerate flooding during germination, also known as anaerobic germination (AG), to address these constraints. A study was conducted to identify QTLs associated with AG tolerance from an IR64/Kharsu 80A F2:3 mapping population using 190 lines phenotyped for seedling survival under the stress. Genotyping was performed using a genomewide 384-plex Indica/Indica SNP set. Four QTLs derived from Kharsu 80A providing increased tolerance to anaerobic germination were identified: three on chromosome 7 (qAG7.1, qAG7.2 and qAG7.3) and one on chromosome 3 (qAG3), with LOD values ranging from 5.7 to 7.7, and phenotypic variance explained (R2) from 8.1% to 12.6%. The QTLs identified in this study can be further investigated to better understand the genetic bases of AG tolerance in rice, and used for marker-assisted selection to develop more robust direct-seeded rice varieties.</p>
収録刊行物
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- Breeding Science
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Breeding Science 69 (2), 227-233, 2019
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詳細情報 詳細情報について
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- CRID
- 1390001288152553984
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- NII論文ID
- 130007679208
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- NII書誌ID
- AA11317194
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- ISSN
- 13473735
- 13447610
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- NDL書誌ID
- 029855162
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可