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minute grains, usually yellow in color but occasionally white, brown, red, or purple, borne in the anther sac at the tip of the slender filament of the stamen of a flowering plant or in the male cone of a conifer.
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-bearing structure of the stamen of a flower, usually borne on a slender stalk called the filament. Each anther generally consists of two pollen sacs, which open when the pollen is mature. The method of opening, or dehiscence, is uniform in any single species of plant.



the principal part of the stamen. The anther consists of symmetrical halves, each of which has one or two pollen sacs. The two halves are united by the continuation of the anther filament. The pollen sacs of angiosperms are homologous to the microsporangia of Pteridophyta and gymnosperms; the anther itself is homologous to the synangium. Microspores develop in the pollen sacs; pollen grains form from the sacs. After the opening of the anther, the pollen grains leave through two vertical slits. The grains may fall onto the stigma of the pistil, where development continues.


The pollen-producing structure of a flower.


the terminal part of a stamen consisting usually of two lobes each containing two sacs in which the pollen matures
References in periodicals archive ?
Petals were removed aseptically and anthers were carefully excised with forceps and placed on MS (Murashige and Skoog 1962) media modified with different auxins and cytokinin either alone or in combination for androgenesis called as MSA media (Table 1).
Each young anther was consisted of 4 pollen sacs (tetrasporangiate) with connective tissue in the center (Fig 1C).
Anther morphology was viewed microscopically using herbarium material cleared in ethanol.
The male anthers of this more defiant wheat species is already lying in the sun, ready to pollinate.
The viability was found to be increased gradually with the advancement of anther dehiscence peat at all flashes at three hours after anthers dehiscence.
Unlike in most other confamilial genera for which similar studies have been performed, these carpels do not emerge while the stamen primordia are still small, prior to differentiation of the stamens into anther and filament; rather, the carpels appear delayed in their emergence, not appearing until after stamen differentiation has begun (Table 1).
To determine the possible influence of the endogenous hormonal status of explants, anthers and stems were excised as previously described for the in vitro culture and the endogenous hormone concentrations analyzed as outlined below.
Castillo; however, the androgynoecium of all cited species shows erect anthers, the presence of long style crests in the first species and capitate style arms in the two latter species, whereas Herbertia zebrina shows divergent anthers and bifid style arms.