Fig. 4
From: Short-term exposure to elevated temperature and CO2 alters phytoestrogen production in red clover
Heatmap matrix showing Spearman correlation coefficients between physiological responses and concentrations of individual phytoestrogen compounds in red clover. Positive correlations are indicated in red and negative correlations are indicated in blue, while the strength of the correlation (value in box) is indicated by color intensity. The asterisk (*) indicates a significant correlation (p < 0.05) between variables. Physiological variables are Ci, sub-stomatal CO2 concentration; gs, stomatal conductance; E, transpiration rate; A, net photosynthetic rate; VPD, vapor pressure deficit; WUE, water use efficiency; and SPAD, chlorophyll content. TP is total phenolic content.
