generative nucleus
noun Date: circa 1892 the one of the two nuclei resulting from the first division in the pollen grain of a seed plant that gives rise to sperm nuclei — compare tube nucleus

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • generative nucleus — generative nucleus. См. генеративное ядро. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • generative nucleus — In many flowering plants, shed pollen is two celled (in others it is three celled or has a variable number). Before pollen is shed, the male gametophyte divides mitotically to give a generative and a vegetative nucleus. The former is the… …   Glossary of Biotechnology

  • generative nucleus — noun : the one of the two nuclei resulting from the first division in the pollen grain of a seed plant that gives rise to sperm nuclei see generative cell; compare tube nucleus …   Useful english dictionary

  • generative cell — noun : a sexual reproductive cell : gamete; especially : a generative nucleus together with its associated cytoplasm see body cell 2 …   Useful english dictionary

  • sperm nucleus — noun : the nucleus of a male gamete; especially : either of the two nuclei that arise from the generative nucleus of a pollen grain and function in the double fertilization characteristic of seed plants …   Useful english dictionary

  • sperm nucleus — noun Date: 1887 either of two nuclei that derive from the generative nucleus of a pollen grain and function in the fertilization of a seed plant …   New Collegiate Dictionary

  • tube nucleus — noun Date: 1939 the one of the two nuclei formed by mitotic division of a microspore during the formation of a pollen grain that is held to control subsequent growth of the pollen tube and that does not divide again compare generative nucleus …   New Collegiate Dictionary

  • tube nucleus — noun : the one of the two nuclei formed by mitotic division of a microspore during the formation of a pollen grain that is held to control subsequent growth of the pollen tube and that does not divide again compare generative nucleus …   Useful english dictionary

  • генеративное ядро — generative nucleus генеративное ядро. Предшественник растительного спермия, образующийся в результате мейоза, а затем одного митоза: из двух гаплоидных Г.я. одно сливается с женской яйцеклеткой, а другое с ядром эндосперма (при двойном… …   Молекулярная биология и генетика. Толковый словарь.

  • Pollen — Tip of a tulip stamen with many grains of pollen Closeup image of a cac …   Wikipedia

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