a Citation: V : 000 ( 0 ) P : 000-00 Type: ARTICLE Literature: oryza Field: abstract Doc ID: pub00000000 Accession (PMID): 00000000 Matching Sentences: [ Sen. 0, subscore: 0.00 ]: Fusarium graminearum is the predominant pathogen causing fusarium head blight of cereals in North America . Fifteen Canadian isolates of Fusarium graminearum were highly diverse in terms of vegetative compatibility grouping ( VCG ) and varied for production of ergosterol and mycotoxin production in rice culture . Aggressiveness was assessed by scoring the disease severity incited in wheat spikes by each isolate . Two inoculation methods , single-floret injection and spray of entire spikes , were used to screen 0 wheat varieties for reaction to the F graminearum isolates . All isolates were of broadly similar aggressiveness , with disease severity ranging from 00 . 0 to 00 . 0 for single floret injection , and 00 . 0 to 00 . 0 for spray inoculation . Disease severity , ergosterol production , and mycotoxin development were not correlated . Using nitrate non-utilizing mutants the 00 isolates were grouped into 00 VCGs . Deoxynivalenol ( DON ) was produced by all isolates in rice culture , at levels between 0 . 0 and 000 ppm . [ Sen. 0, subscore: 0.00 ]: Fusarium graminearum is the predominant pathogen causing fusarium head blight of cereals in North America . Fifteen Canadian isolates of Fusarium graminearum were highly diverse in terms of vegetative compatibility grouping ( VCG ) and varied for production of ergosterol and mycotoxin production in rice culture . Aggressiveness was assessed by scoring the disease severity incited in wheat spikes by each isolate . Two inoculation methods , single-floret injection and spray of entire spikes , were used to screen 0 wheat varieties for reaction to the F graminearum isolates . All isolates were of broadly similar aggressiveness , with disease severity ranging from 00 . 0 to 00 . 0 for single floret injection , and 00 . 0 to 00 . 0 for spray inoculation . Disease severity , ergosterol production , and mycotoxin development were not correlated . Using nitrate non-utilizing mutants the 00 isolates were grouped into 00 VCGs . Deoxynivalenol ( DON ) was produced by all isolates in rice culture , at levels between 0 . 0 and 000 ppm . 