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GrainGenes Reference Report: GNM-38-277

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Reference	GNM-38-277
Title	Gene action for adult-plant resistance to powdery mildew in wheat
Journal	Genome
Year	1995
Volume	38
Pages	277-282
Author	Das M Griffey C
Abstract	Gene action for adult-plant resistance to powdery mildew was studied using generation mean analyses of parents and of F1, F2, and backcross populations derived from a diallel cross of one susceptible and three adult-plant resistant wheat cultivars Joint scaling tests showed that an additive-dominance model was sufficient to explain the variability in the expression of adult-plant resistance in one cross, while digenic epistasis was involved in the other five crosses Additive gene effects were predominant; however, dominance was significant in four crosses, additive X additive interaction was significant in three crosses, additive X dominance interaction was significant in three crosses, and dominance X dominance interaction was significant in one cross Therefore, selection for adult-plant resistance would likely be most effective in advanced generations derived from crosses among the adult-plant resistant cultivars Redcoat, Houser, and Massey
Keyword	[ Hide all but 1 of 14 ] additive-dominance additive-effects crosses cultivar digenic-epistasis disease resistance dominance epistasis erysiphe graminis-f fungal-diseases genetic effects genetic resistance tritici triticum aestivum

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