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GrainGenes Reference Report: CRS-24-129

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Reference	CRS-24-129
Title	Identification and characterization of the gene conditioning powdery mildew resistance in 'Amigo' wheat.
Journal	Crop Science
Year	1984
Volume	24
Pages	129-132
Author	Lowry JR Sammons DJ Baenziger PS Moseman JG
Type	Article
Abstract	'Amigo' wheat (Triticum aestivum L.), is a source of genetic resistance to greenbug (Schizaphis graminum Rondani) biotype C, and is reportedly resistant to powdery mildew (Erysiphe graminis D.C. ex. Merat. f. sp. tritici Em. Marchal). The objective of this research was to identify and characterize the gene(s) for powdery mildew resistance in Amigo wheat To verify that Amigo is resistant to powdery mildew, selected lines from a near-isogenic series carrying genes conditioning powdery mildew resistance, and 'Kavkaz', Amigo, and 'Chancellor' wheats were inoculated with culture 3 of E. graminis tritici and observed for disease reaction. Kavkaz is mildew resistant and Chancellor is known to be susceptible to powdery mildew. Crosses were made between Amigo and Chancellor, and between Amigo and the lines from the near-isogenic series and Kavkaz. Resulting F2 plants were inoculated with culture 3 of E. graminis tritici and rated for resistance. Results from the screening procedures confirmed that Amigo is mildew resistant and that resistance is conferred by a single dominant gene. The segregation ratios for the F2 populations of Amigo/isogenic series and Amigo/Kavkaz suggest the Amigo gene conferring mildew resistance is previously unreported. A possible linkage relationship between the genes for powdery mildew resistance in Amigo and 'Asosan/8*Chancellor' was tested. The F2 families of the cross Amigo/2/Asosan/8*Chancellor were inoculated with E. graminis tritici culture 3 and segregation ratios observed. Close linkage between the genes for resistance in Amigo and Asosan/8*Chancellor was confirmed.
External Databases	https://doi.org/10.2135/cropsci1984.0011183X002400010030x
Gene	Pm17 (Triticum)
Germplasm	AMIGO
Gene Catalogue Number	609
Cited in	McIntosh RA et al. (1995) Catalogue of gene symbols for wheat. Proceedings of the 8th International Wheat Genetics Symposium 1333-1500.

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