Vladimir Ivanovich Beliaev

Beliaev, Vladimir Ivanovich

Born Nov. 14 (26), 1855, in the village of Borzetsovo, Moscow Province; died Oct. 4 (17), 1911, in St. Petersburg. Russian botanist and morphologist; student of I. N. Gorozhankin.

Beliaev graduated from Moscow University in 1878. From 1885 to 1891 he was a docent and from 1891 to 1899 a professor at Warsaw University. His primary works are devoted to the comparative-morphological study of the development and structure of male gametophytes of the heterosporous club moss (1885) and marsh fern (1890) and the pollen tubes in conifers (1891, 1893). He proved the unity of structure of gametophytes and antheridia in all vascular spore plants. Beliaev traced the process of simplification of the pollen tube in the phylogeny of gymnosperms. As a result of this process the structure of the pollen tube of the gymnosperms approached that of the angiosperms. He also proved that plant spermatozoids consist of a nucleus and protoplasm. Beliaev discovered blepharoplast (1892–96) and described the morphology and mechanism of mitosis and meiosis in plants.

REFERENCE

Russkie botaniki: Biografo-bibliograficheskii slovar’, vol. 1. Compiled by S. Iu. Lipshits. Moscow, 1947.

单词	vladimir ivanovich beliaev
释义	Vladimir Ivanovich Beliaev Beliaev, Vladimir Ivanovich Born Nov. 14 (26), 1855, in the village of Borzetsovo, Moscow Province; died Oct. 4 (17), 1911, in St. Petersburg. Russian botanist and morphologist; student of I. N. Gorozhankin. Beliaev graduated from Moscow University in 1878. From 1885 to 1891 he was a docent and from 1891 to 1899 a professor at Warsaw University. His primary works are devoted to the comparative-morphological study of the development and structure of male gametophytes of the heterosporous club moss (1885) and marsh fern (1890) and the pollen tubes in conifers (1891, 1893). He proved the unity of structure of gametophytes and antheridia in all vascular spore plants. Beliaev traced the process of simplification of the pollen tube in the phylogeny of gymnosperms. As a result of this process the structure of the pollen tube of the gymnosperms approached that of the angiosperms. He also proved that plant spermatozoids consist of a nucleus and protoplasm. Beliaev discovered blepharoplast (1892–96) and described the morphology and mechanism of mitosis and meiosis in plants. REFERENCE Russkie botaniki: Biografo-bibliograficheskii slovar’, vol. 1. Compiled by S. Iu. Lipshits. Moscow, 1947.
随便看	missile ecm improvement missile effect missile electrical system test missile electronics computer assembly missile electronic warfare division missile electronic warfare system missile electronic warfare technical area missile enable missile end game evaluation system missile engagement simulation arena missile engagement zone missile environment computer control analysis missileer missile erection bridge missile error data integration analysis missile event conference missile - experimental missile experimental missile explosive ordnance safety advisory board missile farm monitor missile fault locator missile fire control computer missile fire control switchboard missile fire control system missile firing exercise