Fig. 6
The heat map (a) and loading biplot of the recorded traits (b) of the physiological and biochemical alterations in Rosa damascena genotypes under induced-drought stress by PEG and treated with SiO2-NPs application under in vitro culture. The heat map represents relative water content (RWC), membrane stability index (MSI), chlorophyll a (Chl a), chlorophyll b (Chl b), total chlorophyll (Total Chl), carotenoids (CARs), proline content, malondialdehyde (MDA), H2O2 content, total soluble protein content, guaiacol peroxidase (GPX) activity, catalase (CAT) activity, superoxide dismutase (SOD) activity, Fv, Fm and Fv/Fm. G, D, and T for Damask rose genotypes, drought stress induced by PEG, and SiO2-NPs