Figure 1.
Three-week-old in vitro shoots of two potato species (S. commersonii and S. tuberosum L. cv. Désirée) submitted to the different stress treatments for two weeks. Three parameters are shown: (a) shoot length, (b) number of leaves and (c) water content. Letters represent statistical significance for ANOVA p < 0.05. Error bars represent standard deviation. Ctl = control; Suc = sucrose; Stl = Sorbitol; Cld = Cold.