Fig.Ā 4From: Correlation analysis between artemisinin and its derivative contents and trichome characteristics from different Artemisia speciesBiplot (upper) and loading plot (lower) obtained using PCA based on A developmental stage, B leaf age, and C species in Artemisia plants. The explanatory variables included artemisinin (Art), arteannuin B (ArtB), dihydroartemisinic acid (DHAA), artemisinic acid (AA), the number of GTs (No. GT), the number of NGTs (No. NGT), and size of GTs (S. GT)Back to article page