Fig. 2From: Rice defense responses are induced upon leaf rolling by an insect herbivorePrincipal Component Analysis comparing volatile blends from undamaged plant, artificial rolling and natural rolling plant treatments. a after 12 h attack and (b) after 24 h attack. Grouping pattern of samples were with respect to the first two principal components and Hotelling’s ellipse at 95% confidence interval for the observations. Each point represents one sampleBack to article page