Screening of Wheat Germplasm Resistant to Pathogen Races Causing Fusarium Crown Rot Isolated from Hebei Province
Exploring wheat germplasm resources resistant to Fusarium crown rot(FCR)can provide disease resistant materials for research on wheat resistance to FCR and breeding of resistant varieties.Firstly,using the highly pathogenic Fusarium psendograminearum(Fp)strain WZ-8A as the inoculant pathogen,260 wheat vari-eties from different ecological regions at home and abroad were subjected to three rounds of wheat crown rot resistance identification using disease index(DI)in greenhouse.The results showed that there were no immune or highly resistant material,1 medium resistant material(Lunxuan 49,DI=16.67),80 low resistant materials,153 moderately susceptible materials,and 26 highly susceptible materials.Subsequently,14 wheat varieties with good resistance(DI≤27.50)were selected as test materials and inoculated with four FCR pathogen races isolated from different regions of Hebei Province and with different genetic backgrounds.Through seedling resistance evaluation,wheat germplasm resistant to multiple FCR pathogen races in Hebei Province was obtained.The results showed that HengY16guan164,Nongda 2011,and Chadianhong had lower average DI and better comprehensive disease resistance to the four pathogen races,which can provide resistant ma-terials for the research of wheat FCR and the breed-ing of resistant varieties in Hebei Province.
万方数据
维普
