Dictionary definition: antheridium

Article: GA^sub 3^ content in young and mature antheridia of Chara ...
Folia Histochemica et Cytobiologica;  January 1, 2005 ;     700+ words ... ... electrophoresis. Young antheridia contained 0.25 g ... mature ones 0.48 g per antheridium. Although there are ... sub 3^ content in antheridia between C. vulgaris ... between C. vulgaris antheridia and thallus [7, 17 ... During first stages of antheridium development, plasmodesmata ...

Article: The Gametophyte of Lycopodiella prostrata.(Shorter Notes)(Report)
American Fern Journal;  October 1, 2007 ;     700+ words ... ... base. Both archegonia and antheridia developed on the young mature ... with optical sections. Each antheridium had one opercular cell in ... the gamete masses of the antheridia to be essentially spherical ... young gametophytes with both antheridia and archegonia continued ...

Encyclopedia entry: Bryophyta
The Columbia Encyclopedia, Sixth Edition;      700+ words ... ... produce rhizoids, the protonema dies. Antheridia (or sperm-producing structures ... on the species. In the hornworts, antheridia and archegonia are borne either on the ... some species, on separate thalli; the antheridia are borne either singly or in small ...

Article: Comparative studies on gametophyte morphology and development of ...
American Fern Journal;  April 1, 2008 ;     700+ words ... ... Prothalli are usually bisexual and antheridia form earlier than archegonia. Lingulate ... produce notches late and produce more antheridia. In distilled water, filamentous prothalli only produce antheridia. The shapes of the mature prothalli ...

Article: Cryptic characteristics distinguish diploid and triploid ...
Canadian Journal of Botany;  February 1, 2006 ;     700+ words ... ... gametophytes produced archegonia and antheridia containing 64 sperm each. Gametophytes ... archegonia but did produce 32-sperm antheridia, which were significantly larger in diameter than antheridia produced by haploid gametophytes. The ...

Article: Stereochemical specificity of lamoxirene, the sperm-releasing ...
The Biological Bulletin;  October 1, 2001 ;     700+ words ... ... pheromones," that induce sperm release from antheridia and subsequent chemotactic orientation ... 1) induce the release of sperm from antheridia on nearby male gametophytes and subsequently ... 12 days later, when numerous mature antheridia had been formed. Lamoxirene stereoisomers ...

Dictionary definition: antheridiophore
A Dictionary of Plant Sciences;      244 words ...antheridiophore In some members of the Marchantiales , a structure that bears the antheridia (see ANTHERIDIUM ). Compare ARCHEGONIOPHORE .