Supported by the National Natural Science Foundation of China (90208001) and the Knowledge Innovation Program of the Chinese Academy of Sciences (KSCX2-SW-306).
Genetic Analysis and Mapping of the Dominant Dwarfing Gene D-53 in Rice
Article first published online: 3 APR 2006
Journal of Integrative Plant Biology
Volume 48, Issue 4, pages 447–452, April 2006
How to Cite
Wei, L.-R., Xu, J.-C., Li, X.-B., Qian, Q. and Zhu, L.-H. (2006), Genetic Analysis and Mapping of the Dominant Dwarfing Gene D-53 in Rice. Journal of Integrative Plant Biology, 48: 447–452. doi: 10.1111/j.1744-7909.2006.00248.x
- Issue published online: 3 APR 2006
- Article first published online: 3 APR 2006
- Received 21 Mar. 2005 Accepted 15 Aug. 2005
- dominant dwarf gene;
- genetic analysis;
- genetic mapping;
The dwarfing gene D-53 is one of a few dominant genes for dwarfing in rice (Oryza sativa L.). In the present study, our genetic analysis confirmed that mutant characteristics including dwarfing, profuse tillering, thin stems and small panicles are all controlled by the dominant D-53 gene. We measured the length of each internode of KL908, a D-53-carrying line, and classified the dwarfism of KL908 into the dn-type. In addition, we measured elongation of the second sheath and α-amylase activity in the endosperm, and we characterized KL908 as a dwarf mutant that was neither gibberellic acid-deficient nor gibberellic acid-insensitive. Using a large F2 population obtained by crossing KL908 with a wild-type variety, NJ6, the D-53 gene was mapped to the terminal region of the short arm of chromosome 11, with one simple sequence repeat marker, Ds3, co-segregating, and the other, K81114, located 0.6 cM away.
(Managing editor: Li-Hui Zhao)