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Carbon isotope abundance (δ13C) for leaf (panel A) and seed (panel B) tissue from 12 common bean genotypes grown in the field at CIAT under irrigated (black bars) or rainfed (drought) (grey bars) conditions over development for leaf tissue; flowering, pod set, pod maturity. Letters denote significance between treatments. Statistically significant differences were observed between each development stage (multiple comparisons are not shown). Standard errors are shown where; n = 36.
