pollen tube


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pollen tube

n.
A slender tube that is formed by a pollen grain of a seed plant and penetrates the ovule, where it releases the male gametes.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pollen tube

n
(Botany) a hollow tubular outgrowth that develops from a pollen grain after pollination, grows down the style to the ovule, and conveys male gametes to the egg cell
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pol′len tube`



n.
the tube that forms from a germinating pollen grain and grows toward the ovule, carrying male gametes with it.
[1825–35]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

pollen tube

The slender tube formed by the pollen grain that penetrates an ovule after pollination and releases the male gametes.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pollen tube - (botany) a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flowerpollen tube - (botany) a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flower; it penetrates the style and conveys the male gametes to the ovule
phytology, botany - the branch of biology that studies plants
plant part, plant structure - any part of a plant or fungus
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The differences occur in pollen and pollen tube morphology, development and cell composition (Yatomi, et al., 2002; Fernando, et al., 2005; Williams, 2008), spenn delivery (zooidogamy and siphonogamy) (Norstog, 1977) and the duration of pollen germination and fertilization (Chamberlain, 1935; Donaldson & Bosenberg, 1995; Norstog & Nicholls, 1997).
For instance, the subtilisin-like protease encoded by IDG002 was related to anther dehiscence [60]; the products of IDG008 were related to pollen tube growth [61]; the chemocyanins encoded by IDG040 could be involved in the pollination process [62] and induce pollen tube chemotropism as a diffusible chemotropic factor [63].
A subset of the hand-pollinated flowers (ten self-pollinated and ten cross-pollinated) were collected 24 h after pollination and observed under an epifluorescence microscope to observe pollen tube growth and identify possible sites of incompatibility (Martin, 1959).
Transformation of BcBCP1 gene into maize by three different pollen tube pathways.
Temperature affects pollen germination, pollen tube growth (Vasilakakis and Porlingis 1985; Weinbaum et al.
Response of in vitro pollen germination and pollen tube growth of groundnut (Arachis hypogaea L.) genotypes to temperature.
Genetic diversity in pollen tube length development at 25% RH compared with 80% RH also was observed.
The incompatible pollen tube growth is inhibited at the stigmatic surface (REGO et al., 1999; REGO et al., 2000).
At the time of boll formation application of recommended dose of Boron must be applied at it improves the pollen tube formation and strengthen the bolls.
Pollen was considered to have germinated if the pollen tube was twice as long as the diameter of the pollen grain (Nyomora et al., 2000).