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Inheritance and chromosomal location of powdery mildew resistance gene in wild wheat Triticum turgidum Var. dicoccoides

Lookup NU author(s): Keith Moore


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Powdery mildew of wheat is caused by Erysiphe graminis f. sp. tritici and it is a major disease of wheat (Triticum aestivum L.). Therefore there is a need for more research to find new genes for resistance. To study the inheritance of gene/s for resistance to powdery mildew three susceptible T. durum varieties were crossed with three resistant T. dicoccoides accessions. The segregation results in F1, F2, F3 and reciprocal BC 1 progenies confirmed that T. dicoccoides accessions TA1055 and TA1150 possess one similar dominant gene for resistance to Erysiphe graminis f. sp. tritici To determine chromosomal location of gene for resistance to powdery mildew 14 monosomic lines of Chinese Spring were used (1A-7A and 1B-7B) to cross as female with the resistant accessions TA1055 and TA1150. The F1 hybrid seeds were germinated to obtain F2 seeds. Analysis of obtained data revealed that one major dominant gene conferring resistance is located on chromosome 2A of T. dicoccoides accession TA1055 which is different from 33 current known genes for resistance to wheat powdery mildew and should be designated Pmtd1055. © 2007 Asian Network for Scientific Information.

Publication metadata

Author(s): Ahmadi H, Moore K

Publication type: Article

Publication status: Published

Journal: Plant Pathology Journal

Year: 2007

Volume: 6

Issue: 2

Pages: 164-168

ISSN (print): 1812-5387

ISSN (electronic): 1812-5425

Publisher: Asian Network for Scientific Information