Potential of rice landraces with strong culms as genetic resources for improving lodging resistance against super typhoons

It is generally believed that rice landraces with long culms are susceptible to lodging, and have not been utilized for breeding to improve lodging resistance. However, little is known about the structural culm strength of landraces and their beneficial genetic loci. Therefore, in this study, genome...

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Bibliographic Details
Published in:Scientific reports 2021-08, Vol.11 (1), p.15780-15780, Article 15780
Main Authors: Nomura, Tomohiro, Seki, Yoshiaki, Matsuoka, Makoto, Yano, Kenji, Chigira, Koki, Adachi, Shunsuke, Piñera-Chavez, Francisco J., Reynolds, Matthew, Ohkubo, Satoshi, Ookawa, Taiichiro
Format: Article
Language:English
Subjects:
631/208
631/449
Breeding
Dwarfism
Gene loci
Genetic resources
Genome-wide association studies
Genomes
Haplotypes
Humanities and Social Sciences
multidisciplinary
Rice
Science
Science (multidisciplinary)
Typhoons
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Summary:It is generally believed that rice landraces with long culms are susceptible to lodging, and have not been utilized for breeding to improve lodging resistance. However, little is known about the structural culm strength of landraces and their beneficial genetic loci. Therefore, in this study, genome-wide association studies (GWAS) were performed using a rice population panel including Japanese rice landraces to identify beneficial loci associated with strong culms. As a result, the landraces were found to have higher structural culm strength and greater diversity than the breeding varieties. Genetic loci associated with strong culms were identified, and it was demonstrated that haplotypes with positive effects of those loci were present in a high proportion of these landraces. These results indicated that the utilization of the strong culm-associated loci present in Japanese rice landraces may further improve the lodging resistance of modern breeding varieties that have relied on semi-dwarfism.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-95268-0