Quantitative Trait Locus Mapping of the Combining Ability for Yield-Related Traits in Wild Rice Oryza longistaminata

In decades of hybrid rice breeding, the combining ability has been successfully used to evaluate excellent parental lines and predict heterosis. However, previous studies for the combining ability mainly focused on cultivated rice and rarely involved wild rice. In this study, for the first time, we...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2019-08, Vol.67 (32), p.8766-8772
Main Authors: Fan, Fengfeng, Long, Weixiong, Liu, Manman, Yuan, Huanran, Pan, Guojing, Li, Nengwu, Li, Shaoqing
Format: Article
Language:English
Subjects:
Chromosome Mapping
Chromosomes, Plant - genetics
Oryza - genetics
Oryza - growth & development
Oryza - metabolism
Phenotype
Plant Breeding
Plant Proteins - genetics
Plant Proteins - metabolism
Quantitative Trait Loci
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Summary:In decades of hybrid rice breeding, the combining ability has been successfully used to evaluate excellent parental lines and predict heterosis. However, previous studies for the combining ability mainly focused on cultivated rice and rarely involved wild rice. In this study, for the first time, we identified 20 new quantitative trait loci (QTLs) for the combining ability in wild rice using a North Carolina II mating design. Among them, qGCA1, one of the major QTLs that can significantly improve the general combining ability of the plant height, spikelet number, and yield per plant, was delimited to an interval of about 72 kb on chromosome 1. qSCA8, another major QTL, which can significantly improve the specific combining ability of the seed-setting rate and yield per plant, was located in an interval of about 90 kb on chromosome 8. These QTLs discovered from wild rice will provide new ideas to explain the genetic mechanism of the combining ability and establish the basis for breeding of high-combining-ability rice.
ISSN:0021-8561
1520-5118
DOI:10.1021/acs.jafc.9b02224