XVI International Botanical Congess

Using optical and EM it can be shown that this plant regulates the water resource by increasing cuticle thickness and vacuolating cells. Chloroplast adaptations begin showing large grana occupying the major cloroplasts area from the seedling phase. During the reproductive phase chloroplasts are organized in defined grana, plastoglobuli increasing considerably. In a posterior stage, chloroplasts diminish stacking and break down the thylacoidal membranes.In the previous senescence period the grana size are reduced . Chlorophyll diminishes and carotenoid pigments increase. During different development phases also we observed the increment of crystals forming druses