Figure 4.

Effect of the exogenous application of two NPAAs (GABA and ß-alanine) on the growth variables and photosynthetic pigments in the leaves of S. sclerotiorum-infected common beans under greenhouse conditions. (A) Plant height (cm), (B) number of branches per plant, and (C) number of leaves per plant at 0, 7, 14, and 21 days post-inoculation (dpi) with S. sclerotiorum. (D) Chlorophyll a content (mg.g⁻¹ FW), (E) chlorophyll b content (mg.g⁻¹ FW), and (F) total carotenoids content (mg g⁻¹ FW) at 21 dpi (~50 dps). Values represent the means ± standard deviation (means ± SD) of six biological replicates (n = 6). Different letters indicate statistically significant differences between treatments (p< 0.05).