title: Mapping of Quantitative Trait Loci for Contents of Macro- and Microelements in Milled Rice (Oryza sativa L.).
abstract: Macro- and microelement contents are important traits for nutritional quality in rice. In this study, quantitative trait loci (QTLs) for the contents of seven mineral elements in milled rice were detected using recombinant inbred lines (RILs) of the indica rice cross Zhenshan 97/Milyang 46, followed by the validation and fine mapping of a QTL region on the short arm of chromosome 6. A total of 20 QTLs distributed on chromosomes 1, 3, 5, 6, 10, and 11 were detected in the RIL population. Co-localizations of QTLs for multiple traits were observed, of which the qP3/qMg3/qZn3 region was shown to have the largest effects for the contents of phosphorus, magnesium, and zinc, and the qK6.1/qCa6/qZn6/qMn6/qCu6 region was found to be responsible for five of the seven traits. Using near isogenic lines having sequential segregating region, the target QTL on chromosome 6 was delimitated to a 29.9 kb region flanked by RM19410 and Si2944. This QTL showed major effects for all seven traits, with the enhancing alleles derived from the male parent Milyang 46.
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Yong-Hong
authors: YH
authors: Yu
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Ya-Fang
authors: YF
authors: Shao
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Jie
authors: J
authors: Liu
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Ye-Yang
authors: YY
authors: Fan
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Cheng-Xiao
authors: CX
authors: Sun
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Zhao-Yun
authors: ZY
authors: Cao
authors: China National Rice Research Institute , Hangzhou, Zhejiang 310006, People's Republic of China.
authors: Jie-Yun
authors: JY
authors: Zhuang
mesh_terms: D000483:Alleles; D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics; D007178:Inbreeding; D012275:Oryza / Q000235:genetics* / Q000378:metabolism; D010641:Phenotype; D040641:Quantitative Trait Loci; D014131:Trace Elements / Q000378:metabolism*
chemical_list: D014131:Trace Elements
keywords: macroelement; microelement; quantitative trait locus; recombinant inbred line; residual heterozygous line; rice