Figure 2: Effects of exposure to different R:FR light ratios on the blend of volatile organic compounds (VOCs) collected from either uninfested or whitefly-infested tomato (Solanum lycopersicum cv Moneymaker) plants. (A) Multivariate comparison using orthogonal projection to latent structures-discriminant analysis (OPLS-DA) between uninfested plants exposed to different R:FR light ratios (+FRU = 0.6, n = 11; CLU = 1.2, n = 13; -FRU = 8.2, n = 13), displayed in a two-dimensional score plot. (B) Loading plot indicating the contribution of each VOC to the separation between uninfested plants exposed to different R:FR light ratios. (C) Same analysis as described for (A) but now comparing plants infested with Trialeurodes vaporariorum whiteflies and exposed to different R:FR light ratios (+FRWF n = 13; CLWF n = 11; -FRWF n = 14). (D) Loading plot indicating the contribution of each VOC to the separation between whitefly-infested plants exposed to different R:FR light ratios. For VOC identification: the numbers in the loading plots correspond to the numbers in Table S1.