Fig. 4.

(A) Functional vein density measured on leaves of Capsicum frutescens plants at three selected growth stages (GS1, GS2, GS3, see text). Means are given ± s.d. (n = 10). Different lower-case letters indicate significant differences for Tukey's pairwise comparisons (P < 0·001). (B) Functional vein density as a function of leaf hydraulic resistance (R_leaf) as measured in Capsicum frutescens plants at three selected growth stages (GS1, GS2, GS3, see text). The equation of the curve, the coefficient of determination (r²) and the P-value are reported.