文献类型： 外文期刊

作者： Liu LongZhou ¹ ; Cai Run ² ; Yuan XiaoJun ² ; He HuanLe ² ; Pan JunSong ² ;

作者机构： 1.ort Res Inst Shanghai Acad Agr Sci SAAS, Shanghai Key Lab Protected Hort Technol Shanghai, Shanghai, Peoples R China

2.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China

3.SAAS, Inst Hort Res, Shanghai Key Lab Protected Hort Technol, Shanghai 201106, Peoples R China

期刊名称：SCIENCE IN CHINA SERIES C-LIFE SCIENCES （ 影响因子：1.61； 五年影响因子：1.148 ）

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收录情况： SCI

摘要： The cucumber lines, S94 (Northern China open-field type, powdery mildew (PM) susceptible) and S06 (European greenhouse type, PM resistant), and their F(6:7) populations were used to investigate PM resistance under seedling spray inoculation in 2005/Autumn and 2006/Spring. QTL analysis was undertaken based on a constructed molecular linkage map of the corresponding F(6) population using composite interval mapping. A total of four QTLs (pm1.1, pm2.1, pm4.1 and pm6.1) for PM resistance were identified and located on LG 1, 2, 4 and 6, respectively, explaining 5.2%-21.0% of the phenotypic variation. Three consistent QTLs (pm1.1, pm2.1 and pm4.1) were detected under the two test conditions. The QTL pm6.1 was only identified in 2005/Autumn. The total phenotypic variation explained by the QTLs was 52.0% and 42.0% in 2005/Autumn and 2006/Spring, respectively. Anchor markers tightly linked to those loci (<5 cM) could lay a basis for both molecular marker-assisted breeding and map-based gene cloning of the PM-resistance gene in cucumber.