Variation within subpopulations for PUE and shoot and root biomass in experiment 1 and experiment 2.

<p>Top panels show data from experiment 1: indica, n = 66; aus, n = 46; TrJ, n = 78; TeJ, n = 77; Admix, n = 13; Aromatic, n = 11; bottom panels show data from experiment 2: indica, n = 71; aus, n = 58; TrJ, n = 69. Less variable subpopulations and those with few members were omitted in experiment 2. Letters above error bars indicate significant differences between subpopulation means (Tukey’s HSD, P < 0.05). TrJ and TeJ refer to tropical and temperate <i>japonicas</i>, respectively.</p>