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Hokkaido University Collection of Scholarly and Academic Papers >
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Peer-reviewed Journal Articles, etc >
Hybrid Breeding Skewed the Allelic Frequencies of Molecular Variants Derived from the Restorer-of-fertility 1 Locus for Cytoplasmic Male Sterility in Sugar Beet (Beta vulgaris L.)
| Title: | Hybrid Breeding Skewed the Allelic Frequencies of Molecular Variants Derived from the Restorer-of-fertility 1 Locus for Cytoplasmic Male Sterility in Sugar Beet (Beta vulgaris L.) |
| Authors: | Taguchi, Kazunori Browse this author | | Hiyama, Hajime Browse this author | | Yui-Kurino, Rika Browse this author | | Muramatsu, Aki Browse this author | | Mikami, Tetsuo Browse this author →KAKEN DB | | Kubo, Tomohiko Browse this author →KAKEN DB |
| Keywords: | genetic diversity | | molecular heterogeneity | | multiallelic locus | | selection | | DNA marker |
| Issue Date: | 2014 |
| Publisher: | Crop Science Society of America |
| Journal Title: | Crop Science |
| Volume: | 54 |
| Issue: | 4 |
| Start Page: | 1407 |
| End Page: | 1412 |
| Publisher DOI: | 10.2135/cropsci2013.11.0731 |
| Abstract: | Hybrid breeding of crops may involve the selection of reproductive traits, such as cytoplasmic male sterility (CMS), whose expression is controlled by cytoplasmic and nuclear genes. Intense selection of a single cytoplasm and the consequent lack of cytoplasmic divergence is a potential danger, the so-called genetic vulnerability. However, little is known about the relationship between hybrid breeding and diversity of nuclear genes that suppress the expression of CMS (Rf). Despite the multi-allelic nature of Rf at the molecular level, a common Rf variant was previously found to predominate in sugar beet maintainer lines that were selected for a specific genotype for propagating the CMS line. The question was raised as to the frequency of the common Rf variant before the hybrid-breeding era. As the origin of Japanese maintainer lines can be genealogically traced back to seven non-hybrid cultivars, we investigated the allelic diversity of Rf in the seven cultivars using molecular markers. Our results indicated that Rf diversity differs among the cultivars but exceeds that of the maintainers in total, and the common variant in the maintainers is infrequent in all the cultivars. Therefore, maintainer selection has involved selecting a small number of Rf variants in the founder population in Japan. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/56484 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 久保 友彦
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