Fig. 2
Changes in physiological parameters of three common bean cultivars in response to drought. a. Relative growth (RG) values of bean cultivars after two weeks of drought stress (sixty-days after transplanting), as well as RG values after two weeks of re-hydration (seventy-four-days after transplanting). b. Values of PSII efficiency (Fv’/Fm′) of bean cultivars at the end of drought treatment, and after two weeks of recovery (re-watering) are shown for the first three trifoliates. Numbers above bars indicate the number of senescent leaves in each case. c and d Fresh weight (FW) and Dry weight (DW) of the aerial parts of well-watered and drought-stressed plants (sixty-days after transplanting), respectively. e and f DW of the aerial and root parts of control and re-watered plants (seventy-four-days after transplanting), respectively. Pinto Saltillo (PS), Azufrado Higuera (AH), and Negro Jamapa Plus (NP). C, Control; D, Drought; R, Recovery. Graphical representation of mean ± SE of six to nine individual plants from each experiment, out of at least two independent biological experiments. One-way ANOVA was used to compare the statistical difference between measurements (P < 0.05). Different letters indicate significant differences compared to the control plants