pollen

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Related to Tricolpate: Eudicots

pollen

 [pol´en]
the male fertilizing element of flowering plants.

pol·len

(pol'ĕn),
Microspores of seed plants carried by wind or insects before fertilization; important in the etiology of hay fever and other allergies.
[L. fine dust, fine flour]

pollen

The male gametophyte of flowering plants which, once airborne, becomes a major cause of seasonal allergies.

Major allergents
Ragweed and others (e.g., feverfew).

pollen

The male gametophyte of flowering plants, a major cause of seasonal allergies; ragweed–and related henchmen–eg, feverfew, has garnered the greatest revulsion among the allergically challenged

pol·len

(pol'ĕn)
Microspores of seed plants carried by wind or insects prior to fertilization; important in the etiology of hay fever and other allergies.
[L. fine dust, fine flour]

pollen

see POLLEN GRAIN.

pol·len

(pol'ĕn)
Microspores of seed plants carried by wind or insects prior to fertilization; important in the etiology of hay fever and other allergies.
[L. fine dust, fine flour]
References in periodicals archive ?
85 Aperture type (0) single (presumably polar, including monosulcate and monoporate) or disulcate (one furrow at each pole), (1) inaperturate, (2) sulculate, (3) (syn)tricolpate with colpi arranged according to Garside's law (with or without alternating colpi), (4) tricolpate.
According to pollen studies of Inceoglu and Karamustafa (1977), Crambe tataria was observed with radially symmetric, isopolar, tricolpate, subprolate pollen grains and the outline shape was elliptic in the equatorial view and circular in the polar view.
The pollen morphology of Crambe cordifolia Steven, istectate, radially symmetric, isopolar, tricolpate, prolate-spheroidal, outline is elliptic in the equatorial view and circular in the polar view.
isoblate-spheroidal, spheroidal and subprolate, radially symmetric, isopolar, tricolpate, reticulate, rarely tetracolpate, polar axis is 15.2-30.2 m and equatorial axis 12.5-27.1 m, outline is elliptic in the equatorial view and circular in the polar view.
are tricolpate, oblate to suboblate, prolate-spheroidal to rarely oblate-spheroidal (Arora and Modi, 2011).
2000, 2003; Hilu et al., 2003), if the tricolpate pollen of Illiciales,
The fossil record indicates that tricolpate pollen originated
Hickey (1976) suggested that tricolpate pollen represents an advance,
there are adaptive reasons for advancing beyond the tricolpate toward
by its large size, its short, wide, tricolpate aperture, and its solid
Other fossils in this family are mainly tricolpate or
Modern pollen in this family is of two types: tricolpate and