Fine Mapping of a Major QTL qHd8.1 for Heading Date in Rice
Year: 2012
Type: article
Abstract: C23011,containing a single introgressed segment of chromosome 8,was derived from the CSSL population with Nipponbare as the donor and Guanglu′ai 4 as the recurrent parent.In normal long-day conditions,its heading date was 14.1 d shorter than that of Nipponbare.Under short-day conditions,however,no obvious difference in heading date between C23011 and Nipponbare was observed.A segregation population derived from a BC4F2 individual with the heterozygous target segment was used for genetic analysis and gene mapping.The ratio of late heading plants to early heading plants showed a 3∶1 frequency distribution,suggesting that the heading date variation was controlled by a single major QTL,which was named qHd8.1.A physical map was constructed encompassing the qHd8.1 locus and the locus was delimited to a 59.94 kb interval between markers S8111 and S849 on BAC clone AP005164 using 1628 individuals with shorter heading date originated from the BC4F3 populations.There are seven predicted genes within this region.
Source: Zhongguo shuidao kexue
Author: Guohua Liang
Language: English
Subfield: Genetics
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2362175111