Research Paper

Genetic Analysis and Gene Mapping of Multi-tiller and Dwarf Mutant d63 in Rice

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  • 1Rice Research Institute/Key Laboratory of Southwest Crop Genetic Resources and Improvement, Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China; 2Tropical Crops Genetic Resources Institute of Chinese Academy of Tropical Agriculture Sciences, Danzhou 571737, China; 3Rubber Research Institute of Chinese Academy of Tropical Agriculture Sciences, Danzhou 571737, China

Revised date: 2013-03-12

  Online published: 2013-03-27

Abstract

A spontaneous mutation, tentatively named d63, was derived from the twin-seedling progenies of rice crossed by diploid SARIII and Minghui 63. Compared with wild-type plants, the d63 mutant showed multiple abnormal phenotypes, such as dwarfism, more tillers, smaller flag leaf and reduced seed-setting rate and 1000-grain weight. In this study, two F2 populations were developed by crossing between d63 and Nipponbare, d63 and 93-11. Genetic analysis indicated that d63 was controlled by a single recessive gene, which was located on the short arm of chromosome 8, within the genetic distance of 0.40 cM from RM22195. Hence, D63 might be a new gene as there are no dwarf genes reported on the short arm of chromosome 8.

Cite this article

XUE Jing-jing, WU Shao-hua, ZHANG Hong-yu, XU Pei-zhou, WU Xian-jun . Genetic Analysis and Gene Mapping of Multi-tiller and Dwarf Mutant d63 in Rice[J]. Rice Science, 2013 , 20(3) : 179 -184 . DOI: 10.1016/S1672-6308(13)60130-4

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