Characterization of near-isogenic lines carrying QTL for high spikelet number with the genetic background of an indica rice variety IR64 (Oryza sativa L.)
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- Fujita Daisuke
- International Rice Research Institute Japan International Research Center for Agricultural Sciences Present address: National Institute of Crop Science
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- Tagle Analiza G.
- International Rice Research Institute
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- Ebron Leodegario A.
- International Rice Research Institute
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- Fukuta Yoshimichi
- Japan International Research Center for Agricultural Sciences
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- Kobayashi Nobuya
- International Rice Research Institute Japan International Research Center for Agricultural Sciences Present address: National Institute of Crop Science
書誌事項
- タイトル別名
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- Characterization of near-isogenic lines carrying QTL for high spikelet number with the genetic background of an <i>indica</i> rice variety IR64 (<i>Oryza sativa</i> L.)
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Total spikelet number per panicle (TSN) is one of the most important traits associated with rice yield potential. This trait was assessed in a set of 334 chromosomal segment introgression lines (ILs: BC3-derived lines), developed from new plant type (NPT) varieties as donor parents and having the genetic background of an indica-type rice variety IR64. Among the 334 ILs, five lines which had different donor parents and showed significantly higher TSN than IR64 were used for genetic analysis. Quantitative trait locus (QTL) analysis was conducted using F2 populations derived from crosses between IR64 and these ILs. As a result, a QTL for high TSN (one from each NPT donor variety) was detected on common region of the long arm of chromosome 4. The effect of the QTL was confirmed by an increase in TSN of five near-isogenic lines (NILs) developed in the present study. The variation in TSN was found among these NILs, attributing to the panicle architecture in the numbers of primary, secondary and tertiary branches. The NILs for TSN and the SSR markers linked to the TSN QTLs are expected to be useful materials for research and breeding to enhance the yield potential of rice varieties.<br>
収録刊行物
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- Breeding Science
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Breeding Science 62 (1), 18-26, 2012
日本育種学会
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詳細情報 詳細情報について
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- CRID
- 1390282679701013376
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- NII論文ID
- 130004146331
- 10030434044
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- NII書誌ID
- AA11317194
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- COI
- 1:CAS:528:DC%2BC38XpvFertLs%3D
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- ISSN
- 13473735
- 13447610
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- NDL書誌ID
- 023526503
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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
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可