Fig. 1.
Effect of exogenous application of Bc-DCL1/2 dsRNA molecules on plants of strawberry cultivated in the greenhouse for the control of B. cinerea disease. Disease severity observed after a 4, c 7, and e 14 dpi on plants treated with 50, 75, and 100 ng μL−1 of Bc-DCL1/2 dsRNA or of GFP dsRNA molecules, compared with commercial fungicide and water treatments; representative photos of strawberry plants from each type of treatment after b 4, d 7 and f 14 dpi. Disease control value (%) exerted by fungicide and dsRNA-based treatments of gray mold on strawberry fruits observed at 4, 7, and 14 days after Botrytis inoculation in the greenhouse. Values followed by small letters (a, b, c) compare data at 4 dpi, by capital letters (A, B, C) at 7 dpi, by italics small letters (a, b, c) at g 14 dpi. Means with different letters are significantly different according to the Student Newman-Keuls test (p ≤ 0.05) ± SE. Error bars represent the standard errors of three replications