文献类型： 外文期刊

作者： Li, ZF ¹ ; Wan, JM ² ; Xia, JF ² ; Zhai, HQ ² ; Ikehashi, H ² ;

作者机构： 1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China; Anhui Acad Agr Sci, Rice Res Inst, Hefei 230031, Peoples R China; Chinese Acad Agr & Sci, Beijing 100081, Peoples R China; Nihon Univ, Coll Bioresources Sci, Fujisawa, Kanagawa 2528510, Japan

关键词： Oryza sativa;environmental effect;milling quality;quantitative trait loci

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN： 0179-9541

年卷期： 2004 年 123 卷 3 期

页码：

收录情况： SCI

摘要： Milling quality of rice grains is important to both producers and consumers. In this study, quantitative trait loci (QTLs) controlling brown rice rate (BR), milled rice recovery (MR) and head rice recovery (HR) were analysed by composite interval mapping over 2 years using 98 backcross inbred lines (BILs). A total of 12 QTLs for the three traits were detected, of which five were for BR, four for MR and three for HR. The proportion of phenotypic variation explained by individual QTLs ranged from 7.5 to 19.9%, and additive effects contributed by a single QTL accounted for 0.46 to 2.34% of the variation. QTL-by-environment interactions were observed by comparing QTL mapping of the same population grown in two consecutive years. Three of five QTLs for BR and two of four QTLs for MR were detected in 2 years, and all three QTLs for HR were detected in 1 year only. BR was significantly correlated with MR, and all four QTLs of MR were located in the same regions as those of BR. This indicated that QTLs for highly correlated traits could often be detected in the same interval.