Figure 4.
The evolution of predawn leaf water potentials (Ψpd) in the leaves of C. canephora. The clones 14, 22, 73 and 12 of C. canephora var. Conilon were grown in a greenhouse under water stress. The rate of decrease of Ψpd (RDPWP) is indicated for each clone without irrigation (NI) in MPa day-1 m-2 (A). Different small letters represent significant differences between means for drought-stressed clones by the Newman-Keuls test at P ≤ 0.05 (clone effect). Values are means ± SD of three replicates. (B) For each clone, Ψpd evolutions are presented relative to the days after water withdrawal (Δ, clone 22-NI; ▲, 14-NI; ■, 120-NI and ●, 73-NI).