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Phenotypic and cytological observations. (A1–A5,B1–B5) Anther structure, the morphology of the seed status on spikelets and the seed status in YS3038. (C1–C5,D1–D5) Microspores DAPI staining of microspores, I2-KI and peroxidase staining of mature pollen grains. (A1,B1,C1,D1), Late uninucleate stages. (A2,B2,C2,D2), Binucleate stages. (A3,B3,C3,D3), Trinucleate stage. Scale bars = 50 µm (C1–C3,D1–D3), 200 µm (C4,C5,D4,D5).
