Fig. 1.

Leaf water potential (a), maximal quantum yield of PSII photochemistry (b), minimal fluorescence yield of the dark-adapted state (c) and maximal fluorescence yield of the dark-adapted state (d) in Vigna unguiculata plants splayed with EBR and exposed to water deficit. Different uppercase letters between EBR levels (0, 50 and 100 nM EBR under equal water condition) and lowercase letters between water conditions (control and water deficit under equal EBR concentration) indicate significant differences from the Scott-Knott test (P < 0.05). Columns described corresponding to means from five repetitions and standard deviations