antheridium

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antheridium

[‚an·thə′rid·ē·əm]
(botany)
The sex organ that produces male gametes in cryptogams.
A minute structure within the pollen grain of seed plants.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
perigonia) Male inflorescence, comprised of specialised leaves surrounding the antheridia.
2: Typical morphological characteristics of Phytophthora capsici isolated from infected black pepper root: Chlamysdospore (a); torulose hyphae (b); lemon shape sporangium with long pedicel (c) and globose oogonia with paragynous antheridia (d)
1) induce the release of sperm from antheridia on nearby male gametophytes and subsequently attract the sperm to the eggs (1-4).
Gametophytes of both species are bisexual with antheridia and archegonia on the same gametophyte (Fig.
The development of prothallia and antheridia from the sex organs of Polypodium iridiodes.
Morphology of antheridia: 0 = large, several irregular jacket cells; 1 = small, few regularly arranged jacket cells; 2 = without jacket.
AL: starch; ANT: antheridia; B: bract; CC: coronula cells; CE: spiral cells; CES: sterile oosporangium cell; CI: cytoplasm; CL: chloroplasts; CN: nodal cell; CNV: circumvolutions; CP: pedicelar cell; CT: central oospora cell; GA: starch granule; INT: internodes; LL: free lamellae thylakoids; NOD: nodes; NUC: nucleus; OSF: oospora; OOS: oosporangium; POC: compound oosporangial wall; TI: thylakoids; V: vacuoles.
The main difference between Callipteris and the other genera of Woodsiaceae was that the antheridia dehiscence of Callipteris, occurs by an opercular cell and whereas some of Diplazium and other Woodsiaceae antheridia dehiscence occurs by a lateral or apical pore.
The Oospores were mixed with an antheridia suspension then the zygotes were swirled and allowed to settle.
Plerotic oospores with amphygenous antheridia were observed in laboratory crosses (Erwin and Ribeiro, 1996).