文献类型： 外文期刊

作者： Chigira, Koki ¹ ; Kojima, Natsuko ¹ ; Yamasaki, Masanori ² ; Yano, Kenji ³ ; Adachi, Shunsuke ⁴ ; Nomura, Tomohiro; ¹ ;

作者机构： 1.Tokyo Univ Agr & Technol, Grad Sch Agr, 3-5-8 Saiwai Cho, Fuchu, Tokyo 1838509, Japan

2.Kobe Univ, Food Resources Educ & Res Ctr, Grad Sch Agr Sci, 1348 Uzurano Cho, Kobe, Hyogo 6752103, Japan

3.RIKEN, Ctr Adv Intelligence Project, Stat Genet Team, Tokyo 1030027, Japan

4.Ibaraki Univ, Coll Agr, 3-21-1 Chuo, Ibaraki 3000393, Japan

5.Guizhou Acad Agr Sci, Rice Res Inst, Guiyang 550006, Guizhou, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2020 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Lodging can reduce grain yield and quality in cereal crops including rice (Oryza sativa L.). To achieve both high biomass production and lodging resistance, the breeding of new cultivars with strong culms is a promising strategy. However, little is known about the diversity of culm strength in temperate japonica rice and underlying genetic factors. Here, we report a wide variation of culm strength among 135 temperate japonica cultivars, and some landraces having the strongest culms among these cultivars. The genome-wide association study (GWAS) identified 55 quantitative trait loci for culm strength and morphological traits, and revealed several candidate genes. The superior allele of candidate gene for culm thickness, OsRLCK191, was found in many landraces but had not inherited to the modern improved cultivars. Our results suggest that landraces of temperate japonica rice have unutilized superior alleles for contributing future improvements of culm strength and lodging resistance.