Figure 6.

Trait responses as a function of volumetric soil water content (%) of four irrigation regimes among high, intermediate, and low response cultivar groups. Bivariate fit of yield (A), assimilation rate (B), stomatal conductance (C), fructose (D), glucose (E), myo-inositol (F), proline (G), leucine (H), valine (I) in response to increasing soil water stress levels are presented. Two high, two intermediate, and three low response cultivars are listed as H (red), I (green), and L (blue), respectively. Dots with error bars are avr ± sem, lines are regression plots, and **, * and ns indicate p < 0.01, p < 0.05 and p > 0.05, respectively.