您好,欢迎访问上海市农业科学院 机构知识库!

Construction and evaluation of introgression lines and fine mapping of ehd8 from Jinghong common wild rice (Oryza rufipogon)

文献类型: 外文期刊

作者: Sun, Dayun 1 ; Wang, Wenxiang 2 ; Xin, Xiaoyun 1 ; Cao, Liming 3 ; Sun, Xuejun 4 ; Hu, Zejun 4 ; Jiang, Ling 1 ; Dong, Sh 1 ;

作者机构: 1.Fudan Univ, Sch Life Sci, Inst Plant Biol, State Key Lab Genet Engn,Inst Genet, Shanghai, Peoples R China

2.Chinese Acad Agr Sci, Oil Crops Res Inst, Wuhan, Hubei, Peoples R China

3.Shanghai Acad Agr Sci, Inst Crop Breeding & Cultivat, Shanghai, Peoples R China

4.Jiangxi Agr Univ, Minist Educ, Key Lab Crop Physiol Ecol & Genet, Jiangxi Super Rice Engn Technol Res Ctr, Nanchang, Jiangxi, Peoples R China

关键词: common wild rice; heading date; introgression lines; Oryza rufipogon; photoperiod; simple sequence repeat

期刊名称:PLANT BREEDING ( 影响因子:1.832; 五年影响因子:1.956 )

ISSN: 0179-9541

年卷期: 2019 年 138 卷 2 期

页码:

收录情况: SCI

摘要: Heading date is one of the most important traits in rice and regulated by multiple genes. Common wild rice is the ancestor of Asian cultivated rice and harbours abundant genetic diversity. To use wild rice resource in rice breeding, a set of 154 introgression lines (ILs) covering 93% of the genome of Jinghong common wild rice was constructed in the background 'Teqing', using 208 simple sequence repeat markers evenly distributed on 12 chromosomes. Among the ILs, the line JIL64 displayed late heading independent of photoperiod. Genetic analysis using the two F-2 populations crossed ''Teqing'/JIL64 and JIL64/'Teqing' revealed that late flowering was controlled by a recessive gene on chromosome 8 (designated early heading date 8, ehd8), and ehd8 was fine mapped to the 50-kb region flanked by markers RM22221 and 64Indel4. Sequencing and qRT-PCR demonstrated that LOC_Os08g01410 and LOC_Os08g01420 were deleted in JIL64 and may be associated with the late heading of Jinghong common wild rice. These findings lay a practical foundation for characterizing ehd8, and the ILs help to mine genes from Jinghong common wild rice.

  • 相关文献
作者其他论文 更多>>