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Chromosomal location of genes for resistance to powdery mildew in common wheat (Triticum aestivum L. em Thell.) 7. Gene Pm29 in line Pova |
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| Authors: | F.J. Zeller L. Kong L. Hartl V. Mohler S.L.K. Hsam |
| Affiliation: | (1) Pflanzenzüchtung und Angewandte Genetik, Technische Universität München, D-85350 Freising-Weihenstephan, Germany;(2) Department of Agronomy, Shandong Agricultural University, Zaian, Shandong, China;(3) Bayerische Landesantalt für Bodenkultur und Pflanzenbau, D-85354 Freising-Weihenstephan, Germany |
| Abstract: | Chromosomal localization and linkage mapping of a powdery mildewresistance gene were conducted in the resistant wheat line Pova, derivedfrom a Triticum aestivum cv. Poros-Aegilops ovata-alien additionline. Monosomic analysis revealed that a major dominant gene was locatedon chromosome 7D. This gene possessed a distinct disease response patternagainst a differential set of Blumeria graminis tritici isolates andsegregated independently from resistance gene Pm19 also located onwheat chromosome 7D. Molecular genetic analysis showed that theresistance gene in Pova was specifically located on the long arm ofchromosome 7D closely linked to one RFLP and three AFLP markers. It isproposed that the new gene be designated Pm29. |
| Keywords: | Blumeria graminis tritici gene location molecular markers monosomic analysis powdery mildew resistance Triticum aestivum |
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