关键词: 水稻测序品种, SSR, 株高, QTL定位

Abstract: Quantitative trait loci(QTL) for plant height of rice were mapped under two envirorments in 2003 and 2004 by means of F₂ and F_2:3 populations consisted of 180 plants(lines) from the cross between two genome sequenced rice varieties "Peiai64s" and "Nipponbare", and a genetic linkage map including 137 SSR markers constituted by(Peiai 64s/Nipponbare) F₂ population. A total of eight QTLs for plant height were identified in chromosmes 1, 2, 3, 4, 5, 7 and 10, with 6.9%~47.7% of phenotypic percentage of contribution; Six QTLs were identified in chromosomes 1, 1, 3, 4, 5 and 7 in F₂ population in Chengdu, and four QTLs in chromosomes 1, 2, 4 and 10 in F_2:3 population in Hainan. In these QTLs, two QTLs qPH1-2 and qPH4 located in chromosomes 1 and 4 were repeatedly identified. Finally, the worth of mapping QTLs and prediction of gene function by QTL mapping etc. were discussed.

Key words: sequenced rice variety, SSR, plant height, QTL mapping