HomeInternational Rice Research Notesvol. 27 no. 1 (2002)

Quantitative trait loci controlling steamed-rice shape in a recombinant inbred population

Yanjun Dong | Yunfei Zheng | E. Tsuzuki | Hiroyuki Terao

Discipline: Agriculture



To identify quantitative trait loci (QTLs) for steamed-rice shape in rice, we used one recombinant inbred (RI) population provided by Prof. A. Yoshimura of Kyushu University, Japan, derived from the cross between japonica cultivar Asominori and indica cultivar IR24 (IRRI). Tsunematsu et al (1996) constructed a restriction fragment length polymorphism (RFLP) map covering 1,275 cM of 12 chromosomes with 375 markers using 71 RI lines, which was used previously for mapping QTLs for important agronomic traits (Yoshimura et al 1998; Yamazaki et al 1999, 2000; Sasahara et al 1999). In this study, we used a subset of 289 RFLP markers from the original map to map QTLs affecting steamed-rice shape (with an average interval distance between marker pairs of 4.4 cM)