著者
Kenji Fujino Yoshihiro Kawahara Kanako O. Koyanagi Kenta Shirasawa
出版者
Japanese Society of Breeding
雑誌
Breeding Science (ISSN:13447610)
巻号頁・発行日
pp.20089, (Released:2021-02-17)

Understanding genetic diversity among local populations is a primary goal of modern crop breeding programs. Here, we demonstrated the genetic relationships of rice varieties in Hokkaido, Japan, one of the northern limits of rice cultivation around the world. Furthermore, artificial selection during rice breeding programs has been characterized using genome sequences. We utilized 8,565 single nucleotide polymorphisms and insertion/deletion markers distributed across the genome in genotype-by-sequencing for genetic diversity analyses. Phylogenetics, genetic population structure, and principal component analysis showed that a total of 110 varieties were classified into four distinct clusters according to different populations geographically and historically. Furthermore, the genome sequences of 19 rice varieties along with historic representations in Hokkaido, nucleotide diversity and FST values in each cluster revealed that artificial selection of elite phenotypes focused on chromosomal regions. These results clearly demonstrated the history of the selections on agronomic traits as genome sequences among current rice varieties from Hokkaido.

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外部データベース (DOI)

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稲作北限の地、北海道。イネ110品種系統を解析して、稲作の北進を可能にしたゲノムを明らかにしました。 @NARO_JP @HokkaidoUnivPR との共同研究です。 Translation of continuous artificial selection on phenotype into genotype during rice breeding programs https://t.co/tI5FRMhayv

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