Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (03): 439-445 .

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES • Previous Articles     Next Articles

Characterization of RAPD Markers and RFLP Marker Linked to Powdery Mildew Resistant Gene Derived from Different H. villosa

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  1. 中国农业科学院作物栽培研究所
  • Received:2004-03-05 Revised:2004-09-16 Online:2005-03-10 Published:2005-03-10

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Abstract: The analysis was carried out on performance of the resistant gene from H. villosa accession of the former Soviet Union to different isolates of Bluemerie graminis. Polymorphisms were revealed between 6D/6V substitution line Pm930640 and its pedigree parents using five RAPD markers of OPAN031700, OPAI01700, OPAL03750, OPAD07480 and OPAG15580 screened out from 120 random 10-mers primers. Three RAPD markers of OPAN03, OPAI01 and OPAL03 were linked with the resistant gene by analysis of F2 population of Chancellon×Pm930640. Analysis of RAPD markers of 29 wheat lines, including lines conferring one of the most genes from Pm1 to Pm20 respectively, lines conferring resistant gene from two H. villosa accessions and the related wheat parents, showed that these markers not only linked to the gene resistant to powdery mildew from H. villosa, but also detected different genetic backgrounds. OPAL03750 can be used as the marker to distinguish the different resistant lines from two H. villosa accessions because it was only observed in the materials from H. villosa of the former Soviet Union. RFLP analysis also showed the polymorphisms between two H. villosa accessions and their derived resistant lines.

Key words: H. villosa, RAPD, RFLP, Powdery mildew resistant gene

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