{"title":"Breeding of a promising isogenic line of rice (<i>Oryza sativa</i> L.) variety 'Koshihikari' with low cadmium and brown spot (<i>Bipolaris oryzae</i>) resistance.","authors":"Ritsuko Mizobuchi, Satomi Ohashi, Kengo Matsumoto, Yuya Ota, Tomohiro Yamakawa, Tadashi Abe, Satoru Ishikawa, Shinnosuke Ohmori, Yoshinobu Takeuchi, Akitoshi Goto, Kei Matsushita, Tomohito Ikegaya, Sayaka Kon, Nobuhiro Suzuki, Chikako Tsuiki, Utako Yamanouchi, Tsuyu Ando, Hiroyuki Sato","doi":"10.1270/jsbbs.24027","DOIUrl":null,"url":null,"abstract":"<p><p>The <i>OsNRAMP5</i>-deficient rice (<i>Oryza sativa</i> L.) mutant (<i>osnramp5-2</i>), with a low grain cadmium (Cd) content, was registered as 'Koshihikari Kan No. 1' in Japan. Its agronomic traits are almost identical to those of 'Koshihikari' except for its low Cd content and its susceptibility to brown spot (BS) caused by <i>Bipolaris oryzae</i>. To restore BS resistance, we introduced the BS resistance quantitative trait locus (QTL) <i>bsr1</i> into it. The resulting isogenic line (IL) had higher resistance to BS than Koshihikari Kan No. 1 while retaining low grain Cd, with no significant difference from Koshihikari in grain yield or quality. This IL, which we named 'Kanto IL 31', can be used for breeding varieties with low Cd content and BS resistance.</p>","PeriodicalId":9258,"journal":{"name":"Breeding Science","volume":"74 5","pages":"462-467"},"PeriodicalIF":2.0000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11780335/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Breeding Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1270/jsbbs.24027","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/11/15 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
The OsNRAMP5-deficient rice (Oryza sativa L.) mutant (osnramp5-2), with a low grain cadmium (Cd) content, was registered as 'Koshihikari Kan No. 1' in Japan. Its agronomic traits are almost identical to those of 'Koshihikari' except for its low Cd content and its susceptibility to brown spot (BS) caused by Bipolaris oryzae. To restore BS resistance, we introduced the BS resistance quantitative trait locus (QTL) bsr1 into it. The resulting isogenic line (IL) had higher resistance to BS than Koshihikari Kan No. 1 while retaining low grain Cd, with no significant difference from Koshihikari in grain yield or quality. This IL, which we named 'Kanto IL 31', can be used for breeding varieties with low Cd content and BS resistance.
期刊介绍:
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