QTL Mapping of Low Temperature on Germination rate of Rice  被引量:4

QTL Mapping of Low Temperature on Germination rate of Rice

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作  者:CHEN Liang Lou Qiao-jun SUN Zong-xiu XING Yong-zhong Yu Xin-qiao Luo Li-jun 

机构地区:[1]Shanghai Agrobiological Gene Center, Shanghai 201106, China [2]College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China [3]China National Rice Research Institute, Hangzhou 310006, China

出  处:《Rice science》2006年第2期93-98,共6页水稻科学(英文版)

摘  要:To investigate the low temperature on germination capacity (LTG) a double haploid rice (DH) population with 198 lines derived from anther culture of F1 hybrid with indica line Zhenshan 97B and a perennial japonica line AAV002863 was used to construct a linkage map with 140 SSR markers, The germination rate in Zhenshan 97B and AAV002863 was 79,7% and 30,1%, while in DH population it ranged from 0 to 100% at 15℃ after 6 days, Quantitative trait loci (QTLs) controlling low temperature germinability were identified on chromosomes 3 and 10. The percentage of observed phenotypic variance attributed to qLTG-3 and qLTG-10 was 12.6% and 12.9%, respectively. Allele from Zhenshan 97B increased the LTG at qLTG-3 region, while allele from AAV002863 increased the LTG at qLTG-IO region. One pair of epistatic interaction was detected between loci on chromosomes 3 and 10. The main-effect of QTL on chromosome 10 was also involved in epistatic interaction.To investigate the low temperature on germination capacity (LTG) a double haploid rice (DH) population with 198 lines derived from anther culture of F1 hybrid with indica line Zhenshan 97B and a perennial japonica line AAV002863 was used to construct a linkage map with 140 SSR markers, The germination rate in Zhenshan 97B and AAV002863 was 79,7% and 30,1%, while in DH population it ranged from 0 to 100% at 15℃ after 6 days, Quantitative trait loci (QTLs) controlling low temperature germinability were identified on chromosomes 3 and 10. The percentage of observed phenotypic variance attributed to qLTG-3 and qLTG-10 was 12.6% and 12.9%, respectively. Allele from Zhenshan 97B increased the LTG at qLTG-3 region, while allele from AAV002863 increased the LTG at qLTG-IO region. One pair of epistatic interaction was detected between loci on chromosomes 3 and 10. The main-effect of QTL on chromosome 10 was also involved in epistatic interaction.

关 键 词:RICE low temperature germinability quantitative trait locus 

分 类 号:S511[农业科学—作物学]

 

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