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Comparison of leaf morphology and transverse sections of flag leaf at heading stage between two parents. A. Flag leaf of 93–11 (left) and PA64s (right). Bar = 5 cm. B, D. Paraffin section of flag leaf of 93–11. C, E. Paraffin section of flag leaf of PA64s. B, C. bar = 800 μm. D, E. bar = 200 μm.
