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Genetic Variation For Fusarium Head Blight Resistance In Soft Red Winter Wheat, Marla Dale Hall
Genetic Variation For Fusarium Head Blight Resistance In Soft Red Winter Wheat, Marla Dale Hall
University of Kentucky Master's Theses
Fusarium graminearum, the causative agent of Fusarium head blight, is an economically important pathogen of wheat (Triticum aestivum). Breeding Fusarium head blight (FHB) resistant wheat requires knowledge of the underlying genetic control of FHB resistance.
Two nine-parent diallel analyses were completed in greenhouse and field environments. Combining abilities, variance component ratios, and narrow sense heritabilities for FHB resistance and deoxynivalenol levels were calculated. Significant general and specific combining ability effects were observed. Resistance to FHB seems to be mostly controlled by additive genetic effects with some dominance noted in the field. Resistance noted in the greenhouse environment …