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- Title
QTL analysis of cooked rice grain elongation, volume expansion, and water absorption using a recombinant inbred population.
- Authors
Ge, X. J.; Xing, Y. Z.; Xu, C. G.; He, Y. Q.
- Abstract
The traits of elongation, volume expansion, and water absorption are very important in determining the quality of cooked rice grains. In this study, quantitative trait loci (QTL) analysis of these traits was performed using a recombinant inbred population derived from a cross between twoindicacultivars,‘Zhenshan 97’ and‘Minghui 63,’ which are the parents of the most widely grown hybrid rice in China. Using a linkage map based on 221 molecular marker loci covering a total of 1796 cM, a total of 33 QTLs were identified for the nine traits tested. QTLs were detected on chromosomes 1–3, 5–9, and 11, respectively. The QTLs identified included three for cooked rice grain length elongation (chromosomes 2, 6, and 11), six for width expansion (chromosomes 1–3, 6, 9, and 11) and two for water absorption (chromosomes 2 and 6). Interestingly, a single QTL located near thewxgene on chromosome 6 seemed to influence all the traits tested for the cooked rice quality.
- Subjects
RICE quality; RICE breeding; RICE genetics; GRAIN genetics; INBREEDING; RICE; ABSORPTION of water in plants; COOKING; PLANTS
- Publication
Plant Breeding, 2005, Vol 124, Issue 2, p121
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1111/j.1439-0523.2004.01055.x