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Plant morphology and characteristics of the anthers and pollen in sterile Peiai64s (PA64S(S)) and fertile Peiai64s (PA64S(F)). (A,C,D): pictures of plant morphology, pollen staining, and spikelets in PA64S(S), respectively; (B,E,F): pictures of plant morphology, pollen staining and spikelets in PA64S(F), respectively.
