Mapping and Genetic Analysis of Heading Date Gene Hd7 m in Rice
Zeng Lian
Zhang Hua
Liu Xu
Xuan Ning
Li Jun
Li Guangxian
Yang Yongyi
Yao Fangyin
Liu Kaiqi
Abstract：Using Hongqi 16 as the receptor and Minghui 63 as the donor, a BC4 F1 segregation population was developed through cross between the two parents and backcross with Hongqi 16.The early heading gene pool, late heading gene pool, and the parents were analyzed with 643 pairs of SSR markers, and 4 pairs of polymorphic markers were obtained.BC4 F2 populations derived from inbreeding of BC4 F1 hybrid plants with obvious segregation phenotype were selected for field investigation and genotype detection.The results showed that the target gene, named Hd7m, was linked to SSR marker PSM391, which located at the end of chromo-some 7.Based on the targeted interval, 10 pairs of new SSR markers were synthesized.Among which, the polymorphic marker RM22156 was apart from Hd7m of 4.1 cM.The results laid foundations for fine mapping, gene cloning and molecular marker assisted breeding of Hd7m.
Keywords：RiceHeading dateGene mappingSSR markerGenetic analysis
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 10-13 )