Identification and fine mapping of qWBPH11 conferring resistance to whitebacked planthopper (Sogatella furcifera Horvath) in rice (Oryza sativa L.)
文献类型： 外文期刊
作者： Fan, Dejia 1 ; Liu, Yuqiang 1 ; Zhang, Hongliang 1 ; He, Jun 1 ; Huang, Fengkuan 2 ; Huang, Suosheng 2 ; Wu, Biqiu 2 ; Li 1 ;
作者机构： 1.Nanjing Agr Univ, Natl Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Jiangsu, Peoples R China
2.Guangxi Acad Agr Sci, Inst Plant Protect, Nanning, Guangxi, Peoples R China
3.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China
关键词： Whitebacked planthopper; Resistance; Quantitative trait loci; Fine mapping; qWBPH11
期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）
ISSN： 1380-3743
年卷期： 2018 年 38 卷 7 期
页码：
收录情况： SCI
摘要： The whitebacked planthopper (WBPH), Sogatella furcifera Horvath, is one of the most destructive pests in rice (Oryza sativa L.) production. Host-plant resistance has been considered as an efficient and eco-friendly strategy to reduce yield losses caused by WBPH. In this study, we found that an indica rice cultivar IR54751-2-44-15-24-2 (IR54751) displayed high resistance to WBPH at both seedling and tillering stages. The resistance of IR54751 was mainly contributed by antixenosis and tolerance rather than antibiosis. An F-2 population derived from a cross between IR54751 and a susceptible japonica cultivar 02428 was constructed to detect the quantitative trait loci (QTLs) conferring the resistance to WBPH. In total, four QTLs including qWBPH3.1, qWBPH3.2, qWBPH11, and qWBPH12 were identified and distributed on three different chromosomes. The four QTLs had LOD scores of 3.8, 8.2, 5.8, and 3.9, accounting for 8.2, 21.5, 13.9, and 10.4% of the phenotypic variation, respectively. Except for qWBPH3.1, the resistance alleles of the other three QTLs were all from IR54751. Further, a secondary population harboring only single qWBPH11 locus was developed from the F-2 population by marker-assisted selection. Finally, qWBPH11 was delimited in a 450-kb region between markers DJ53973 and SNP56. The identification of WBPH resistance QTLs and the fine mapping of qWBPH11 will be helpful for cloning resistance genes and breeding resistant rice cultivars.
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