Fig. 1. Root/shoot ratios of two bush bean (P. vulgaris L.) lines, ‘S156’ (O3-sensitive) and ‘R156’ (O3-tolerant), grown in OTCs (CF and NF), and non-chambered AA plots. Plants harvested at 35 DAS, at the end of the vegetative phase. The bars show meansS.E. (standard error) values (at P<0.05). For each treatment, n=16 per bean line
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