Abstract: The male sterile plant of C. lanceolata Hook. was found by us in Zhejiang province in 1978. This paper descfibes a seties of studies on the morphology, physiology and biochemistry of the microstrobilus of the male sterile plant of C. lanceolata. The male sterility of C. lanceolata belongs to the pollen-free type. The direct causes of the male sterility of C. lanceolata may be that the tapetum disintegrates in advance and that the microspore mother cells call not finish meiosis. The female cone of the male sterile plant can blossom, pollinate and bear seeds normally. During the genesis and development of the microspore, the respiratory intensity of the microstrobilus in the male sterile plant is obviously lower than that of the microstrobilus in the male fertile plant. There is a significant difference in the charts of peroxidase isozyme between the male sterile and fertile plants. It shows that the bands of the former are always more than that of the latter It is suggested that there exists the male sterile cytopleam gene in the male sterile plants, which can influemces the normal function or/and regulates the expression of nucleal, genes that coded the peroxidase isozymes, and the discordance between nuclear gene and cytopleam gene can result in the male sterility

Key words: C. lenceolata, Microstrobilus, Male sterile, Developmental anatomy, Peroxidase