Detecting RAPD Markers Linked to Ripe Rot Resistance Genes in Chinese Wild Vitis

With F1 individuals of the cross combination 88-110 of 83-4-96 ( V. quinquangularis Rehd.) X Muscat Rose ( V. vinifera L.), the RAPD marker OPC15-1300 linked to ripe rot ( Gloeosporium fructi-genum Berk.) resistance genes in Chinese wild Vitis was gained using bulked segregation analysis (BS A). And it was found that OPC15-1300 could be hereditary from the resistant parent (83-4-96) after the marker was tested in 50 Fj plants of the cross combination 88-110, 32 accessions of 8 Chinese wild Vitis species and 14 cultivars of V. vinifera L. Also, it has provided a solid basis for molecular marker-assisted selection (MAS) and for possibly cloning disease resistance genes in the future.

中国野生葡萄抗黑痘病基因RAPD标记的克隆、序列分析及辅助育种应用

对中国野生葡萄抗黑痘病基因RAPD标记OPS03-1300进行了克隆、测序及序列分析,结果表明该标记实际长度是1354bp,因此更名为OPS03-1354,其GenBank登录号为DQ350885。该标记序列与99条来自欧洲葡萄的EST有同源性,其中与1条来自赤霞珠叶片感染葡萄皮尔斯病病原菌后获得的EST同源性为82%,与2条来自赤霞珠果实在不同发育期获得的EST同源性分别为80%和85%。该序列与1条来自中国野生华东葡萄白河-35-1叶片接种霜霉病病原菌后获得的EST同源性为67%。该序列编码葡萄的一种假定蛋白。此外,应用该标记对中国野生葡萄与欧洲葡萄的种间杂交广西-1×京可晶F1代339株、白河-35-1×佳利酿F2代207株进行了辅助选择。

中国野生葡萄抗霜霉病基因RAPD标记的筛选

以抗病的中国野生华东葡萄(Vitis pseudoreticulata)白河-35-1(Baihe-35-1)与感病的欧洲葡萄佳利酿(Carignane)杂交F2代为试材,从520条随机引物中筛选出21条可以扩增多态性DNA片断的随机引物,从中获得了6个抗霜霉病基因的RAPD标记,对这些标记回收、克隆、测序后,将得到的6个标记分别记录为:S294-369,S202-527,S382-615,S221-677,S416-1224和S390-725。通过分析这6个RAPD标记在F2代植株中的表现,证明这些标记都与霜霉病抗性的基因有连锁关系。这将为葡萄抗霜霉病育种的分子标记辅助选择提供分子依据。