gametophyte


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

gametophyte

[gəmē′tōfīt]
Etymology: Gk, gamete + phyton, plant
a cell in the reproductive stage when the nuclei are in a haploid condition.

gametophyte

(găm′ĕ-tō-fīt) [″ + phyton, plant]
In plants, the sexual (gamete-producing) generation that alternates with the asexual (spore-producing) generation.

gametophyte

that part of the life cycle of plants which has HAPLOID nuclei and gives rise to the sex cells which on fusing produce a DIPLOID stage, usually the SPOROPHYTE. See ALTERNATION OF GENERATIONS.
References in periodicals archive ?
A contribution to the gametophyte morphology and development in several species of Thelypteris, Thelypteridaceae.
Response of spores and young gametophytes of Cyathea delgadii Sternb.
In contrast to animals, plant fertilization is based on the interplay between multicellular haploid gametophytes.
A new approach to kelp mariculture in Chile: production of free-floating soporophyte seedlings from gametophyte cultures of Lessonia trabeculata and Macrocystis pyrifera.
The gametophyte (haploid) stage or generation is the dominant form for lower (nonvascular) plants--the sporophyte begins less evident and smaller.
Multicellular and branched hairs on the fern gametophyte.
The gametophyte continues growth and produces new sporogonia every year again.
Example: In pine trees, the immature male gametophyte is a megaspore, the embryonic pine seed, a pollen tube or a pollen grain?
gametophyte The haploid phase of a plant's life when the sex cells (gametes) are produced.
Genetic variability of gametophyte growth rate in Maize.
Since red algae lack motile spores, and spermatia must fertilize carpogonia on the female gametophyte, fertilization success is likely very low (Searles 1980).