QTL Analysis of Cold-tolerance at Seedling Stage in Rice

To provided the experimental materials for identifying and cloning the quantitative trait loci ( QTLs) of cold tolerance at the seedling stage, the authors analyzed QTLs and evaluated the genetic effects of two parents and a mapping population of 213 lines (recombination inbred lines, RILs) derived...

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Published inAgricultural biotechnology (Pawtucket, R.I.) Vol. 7; no. 5; pp. 80 - 82
Main Authors Zhang, Xichun, Peng, Qiang, Zhang, Dashuang, Wu, Jianqiang, Wang, Jifeng, Huang, Peiping, Zhu, Susong
Format Journal Article
LanguageEnglish
Published Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.10.2018
Subjects
Chromosome 6
Cloning
Cold tolerance
Gene mapping
Genetic effects
Genomics
Identification
Inbreeding
Mapping
Oryza
Parents
Phenotypic variations
Plant growth
Quantitative trait loci
R&D
Recombination
Research & development
Rice
Science
Seedlings
Seeds
Software
China
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Summary:To provided the experimental materials for identifying and cloning the quantitative trait loci ( QTLs) of cold tolerance at the seedling stage, the authors analyzed QTLs and evaluated the genetic effects of two parents and a mapping population of 213 lines (recombination inbred lines, RILs) derived from a cross between IR24 and Asominori for cold tolerance at the seedling stage with dead seedling rate by using software QTL IciMapping 4. 0, based on a genetic linkage map constructed with 141 SSR molecular markers. The QTLs qCTS-6, qCTS-1 1 and qCTS-1 2 related to cold tolerance at the seedling stage were detected on chromosome 6, 11 and 12, respectively. Individual QTLs (LOD-3.194 3, LOD: 4.688 2, LOD-3.797 0) explained 5.662 7% , 8.549 6% and 12.787 7% of the observed phenotypic variance, respectively. All of the three detected QTLs alleles came from cold-tolerant parent Asominori.
ISSN:2164-4993