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《Chinese Journal of Rice Science》 2003-01
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Hybrid Sterility Inheritance and Mapping of Sterile Genes among Near-Isogenic Lines Derived from Interspecific Hybrid Between Cultivated Rice Species Oryza sativa and O. glaberrima

TAO Da yun 1, XU Peng 1, LI Jing 1, YANG You qiong 1, ZHOU Jia wu 1, HU Feng yi 1, Monty P. JONES 2( 1Food Crops Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China; 2West Africa Rice Development Association, 01 B. P. 2551 Bouake 01, Cote D'Ivoire)  
Three combinations of WAB56 104/WAB450 2∥WAB56 104, WAB56 104/WAB450 7∥WAB56 104, and WAB56 104/WAB450 8∥WAB56 104 were used to study inheritance of pollen and seed setting rate in Sanya, Hainan Province in the early season rice (March-July, 2001). WAB56 104 and CG14 were upland japonica rice (Oryza sativa) and O. glaberrima, respectively. WAB450 2, WAB450 7, and WAB450 8 were derived from interspecific BC 2 cross WAB56 104/CG14∥WAB56 104///WAB56 104. Results indicated that semi sterility of pollen and spikelet could be explained by one locus sporo gametophytic interaction model. However, elimination of female gametes was incomplete. Gene mapping with SSR markers showed that sterile gene in WAB450 2 and WAB450 8 was located on short arm of chromosome 6, cosegregated with closely linked SSR markers RM190 and RM133 respectively, which was high possible allelic to S 1 locus. But sterile gene in WAB450 7 was loosely linked to RM253, which indicated that the sterile gene locus in WAB450 7 might be different from that in WAB450 2 and WAB450 8.
【Fund】: 云南省自然科学基金重点项目 (97C0 0 4 Z);; ;西非稻作发展协会 (WARDA)资助项目
【CateGory Index】: S511
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