Fig. 8
From: Evolution of flower allometry and pigmentation in Mammillaria haageana (Cactaceae)
Tepal shape and color are correlated to environmental variables. a Solar radiation environmental variables and their correlation to shape (PCS) and color (PCC). b-d Top correlations of solar radiation variables to tepal shape (PCS). e-g Top correlations of solar radiation variables to tepal color (PCC). GHI, long-term yearly average Global Horizontal Irradiation; DNI, long-term yearly average of Direct Normal Irradiation; DIF, long-term yearly average of Diffuse Horizontal Irradiation; GTI, long-term yearly average of Global Irradiation at Optimum Tilt (kWh/m2); and TEMP, long-term yearly average of air Temperature (°C). Accessions are color-coded according to the previous subspecies classification. Dots represent the mean PC value for each accession, and lines represent the standard deviation from the mean