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Number of veins and cell files across the leaves of C0 to C5 lines. Data show (A) the number of veins across the width of the third leaf, (B) the number of cell files over the width of the third leaf of the cycles for recurrent selection, and (C) the relationship between the width of leaf 3 and number of cell files. The error bars represent SEs (n=15 for vein and cell file numbers and n=24 for leaf width). Letters identify significant differences between means (P≤0.05).
