anther

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Fig. 39 Anther . Transverse sections of (a) young and (b) mature anthers.

anther

that part of the STAMEN of a flower that produces the male GAMETES and that is located at the end of a flexible stalk (the filament). Each anther usually has four ‘pollen sacs’ in which POLLEN GRAINS (HAPLOID) develop by a process of MEIOSIS. The pollen-grain nucleus divides into generative and tube nuclei, representing a truncated version of the GAMETOPHYTE generation found more clearly in lower plants.

See also EMBRYO SAC.

References in periodicals archive ?
For identification of the inflorescence development-related genes, these libraries were classified into five types according to the tissues used in library preparation, including seedling-stage leaf and stem, seedling to tillering-stage root, seed (from DPA3 to mature), and inflorescence (including premeiotic anthers, anthers at meiosis, pistil and ovary, immature inflorescence, lemma and palea, spike before flowering, and spike at flowering).
Flowers open in late afternoon (04.30-06.20 pm) and anthers dehisce almost simultaneously with corolla opening.
Flowers took approximately one hour to open and expose the anthers. Based on an [H.sub.2][O.sub.2] test, the stigma was receptive during the entire period of anthesis.
According to the results obtained, Cadia showed as the most responsive genotype among tested ones in which 9.5% of cultured anthers succeeded to embryo formation and approximately 0.57 embryo was produced per bud.
Determining the Number of Pollen Grains in Anthers of Flowers of Different Age.
The results showed that the formation of anther wall conforms to the basic type.
They have flowers all round the upright stem and inside the flowers, the anthers with the pollen are usually blue (although this may vary a little).
and Siphocampylus Pohl by the broad (versus narrow) apex of the anther tube, the fleshy, indehiscent fruits (versus capsules in most Siphocampylus spp.), and the fusiform (versus ellipsoid to oblate) seeds.
Hence the current study was initiated to explore anthers of cultivar Faisalabad long for their genotypic potential to develop embryogenic calli on different media and culture conditions.
It has 8 stamens with oblong anther. Often Azaleas are planted near foundations, steps and decks to soften architectural features [1].
It too seems to be effectively pollinated by honey bees and native larger-bodied generalist bees that scrabble at the anthers for pollen, as well as by nectar-foraging hummingbirds (Mitchell, 1989).
Suitable anthers were inoculated on the solid medium (8% agar) that contained four types of plant growth regulator (PGR): two types of Auxins NAA and 2,4-D and two types of cytokinins, BAP and Kinetin (Table 3).