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ELECTRON MICROSCOPE OBSERVATION ON THE MICROSPORANGIUM DEVELOPMENT IN MALE-STERLIE PLANT AND MALE-FERTILE PLANT OF CUNNINGHAMIA LANCEOLATA

ELECTRON MICROSCOPE OBSERVATION ON THE MICROSPORANGIUM DEVELOPMENT IN MALE-STERLIE PLANT AND MALE-FERTILE PLANT OF CUNNINGHAMIA LANCEOLATA

杉木雄性不育株与可育株小孢子囊发育的电镜研究