title: [Mapping of QTLs of Cd2+ content in brown rice under Cd2+ stress in rice].
abstract: A population of F8 recombinant inbred lines (RILs), derived from a cross between IR26 (Oryza sativa L. spp. indica) and Jiucaiqing (japonica), were used to identify the quantitative trait loci (QTLs) for Cd2+ content in brown rice under 5 mg/kg Cd2+ stress. Two QTLs, qCCBR-11a and qCCBR-11b, associated with the Cd2+ content in brown rice, were detected on chromosome 11. qCCBR-11a was located at the position between markers RM6288 and RM6544, accounting for 11.17% of the phenotypic variance with an additive effect value of 0.089. qCCBR-11b at the interval between markers RM167 and RM5704 explained 7.66% of the phenotypic variance with an additive effect value of 0.075. In addition, the correlation coefficients between Cd2+ content of brown rice and plant height, spikelets per panicle, filled grains per panicle, seed setting rate, and 1 000-grain weight were not significant. This suggested that the Cd2+ content in brown rice under Cd2+ stress was an independent genetic trait.
authors.affiliation: State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China. chen701865@yahoo.com.cn
authors.forename: Zhi-De
authors.initials: ZD
authors.lastname: CHEN
authors.forename: Zhou-Fei
authors.initials: ZF
authors.lastname: WANG
authors.forename: Jian-Bo
authors.initials: JB
authors.lastname: HE
authors.forename: Wei-Gong
authors.initials: WG
authors.lastname: ZHONG
authors.forename: Jun
authors.initials: J
authors.lastname: WANG
authors.forename: Jie
authors.initials: J
authors.lastname: YANG
authors.forename: Hong-Sheng
authors.initials: HS
authors.lastname: ZHANG
mesh_terms: D002104:Cadmium / Q000633:toxicity*; D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000235:genetics; D012275:Oryza / Q000187:drug effects* / Q000235:genetics* / Q000378:metabolism; D040641:Quantitative Trait Loci / Q000235:genetics*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D014874:Water Pollutants, Chemical; D002104:Cadmium