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Ectopic expression of PsnCYCD1;1 caused seed fertility in transgenic tobacco. (A,D) Observation of ovules before pollination between CK and transgenic (OE1) line; (B,E) microscopic observation of seeds in the ovary 10 days after pollination with wild-type pollens between CK and transgenic (OE1) line; and (C,F) close-up of the image (B,E). CK, control plant (A–C); OE1, transgenic plant (D–F).
