Composition and variation in aggressiveness of Fusarium populations causing wheat head blight in Henan province Resistance to Fusarium head blight and deoxynivalenol accumulation in various tissues of wheat heads Cloning of PAL Genes and Their Response to FHB in Wheat Analyses of Combining Ability of DON Content in Wheat Grains The types of resistance to Fusarium head blight and deoxynivalenol content in the heads of different wheat germplasms