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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.12
- 수록면
- 282 - 289 (8page)
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Cold stress is one of the serious abiotic stresses for stable rice production especially in high-latitude temperate regionand high-altitude tropical area. Improving cold tolerance at seedling stage led stable seedling growth with yield stability. In this study,QTLs for cold tolerance at seedling stage were identified using the 96 introgression lines (ILs) derived from an inter-specific crossbetween Hwaseong (Oryza sativa) and Oryza rufipogon. Three QTLs were detected and the O. rufipogon alleles at two QTL (qCTS1and qCTS12) improved cold tolerance in the Hwaseong genetic background whereas the O. rufipogon allele at qCTS10 on chromosome10 decreased cold tolerance. Among these three QTLs, a major QTL qCTS12 explained 27.5% of phenotypic variation. Fine-mappingindicated that qCTS12 was different from those QTL reported in previous studies based on the map location suggesting that qCTS12might be a new allele and is not associated with deleterious genes such fertility reduction. Among the 96 introgression lines, two lines,CR60 and CR61 were selected based on enhanced cold tolerance at seedling stage. qCTS12, therefore, provides a valuable allele forbreeding rice with improved cold tolerance.
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