Comparison of strains LC22 and LC41 of Sclerotinia minor in mycelial growth rate, sclerotial production, pathogenicity and presence/absence of dsRNA. (A) Colony morphology, growth rate and sclerotial formation on potato dextrose agar (20 °C, 10 d). ** p < 0.01 between LC22 and LC41, Student’s t test; (B) Lesions on oilseed rape leaves two days after inoculation (20 °C). ** p < 0.01 between LC22 and LC41, Student’s t test; (C) An agarose gel electrophoregram showing the band of the dsRNA extracted from the mycelia of LC22 and LC41. The extracts were treated with S1 nuclease and DNase I before being loaded in the gel for electrophoresis. The DNA marker is λDNA/Hind III.