Now showing items 1-10 of 45
Role of mitochondria during female gametophyte development and fertilization in A. thaliana
Plants alternate between two generations during their life cycle: the diploid sporophyte and the haploid male and female gametophytes, in which gametes are generated. In higher plants, the female gametophyte or embryo sac ...
Pollination triggers female gametophyte development in immature Nicotiana tabacum flowers
(Frontiers Media Sa, 2015-07-22)
In Nicotiana tabacum, female gametophytes are not fully developed at anthesis, but flower buds pollinated 12 h before anthesis produce mature embryo sacs. We investigated several pollination-associated parameters in N. ...
Identification of phase relative genes in tetrasporophytes and female gametophytes of Gracilaria/Gracilariopsis lemaneiformis (Gracilariales, Rhodophyta)
(Pontificia Universidad Católica de Valparaíso, 2006)
Ecology and morphological characterization of gametophyte and 'Chantransia' stages of Sirodotia huillensis (Batrachospermales, Rhodophyta) from a stream in central Mexico
The morphology and phenology of Sirodotia huillensis was evaluated seasonally in a central Mexican first-order calcareous stream. Water temperature was constant (24-25°C) and pH circumneutral to alkaline (6.7-7.9), and ...
Variability in per capita oogonia and sporophyte production from giant kelp gametophytes (Macrocystis pyrifera, Phaeophyceae)
(Sociedad de Biología de Chile, 2004)
Ovule and female gametophyte in representatives of Nymphaea subgenus Hydrocallis and Victoria (Nymphaeaceae; Nymphaeoideae)
(Elsevier Science, 2015-10)
Nymphaeaceae occupies an important phylogenetic position because of their placement as one of the basal angiosperms. From this perspective, morphological studies in the family are of great value to understanding plant ...
Auxin import and local Auxin Biosynthesis are required for Mitotic Divisions, Cell Expansion and Cell Specification during female Gametophyte development in Arabidopsis Thaliana
(Public Library Of Science, 2015-05)
The female gametophyte of flowering plants, called the embryo sac, develops from a haploid cell named the functional megaspore, which is specified after meiosis by the diploid sporophyte. In Arabidopsis, the functional ...
Mycorrhizal association in gametophytes and sporophytes of the fern Pteris vittata (Pteridaceae) with Glomus intraradices
(Revista de Biología Tropical, 2012-12)
Ferns, which are usually colonizing different environments and their roots frequently present mycorrhization, have two adult stages in their life cycle, the sporophytic and the gametophytic phase. This paper describes the ...
CARACTERIZAÇÃO ESTRUTURAL DA EMBRIOLOGIA EM TILLANDSIA AERANTHOS (LOIS.) L. B. SM. (TILLANDSIOIDEAE-BROMELIACEAE)
(Universidade Federal de Santa MariaBRCiências BiológicasUFSMPrograma de Pós-Graduação em Agrobiologia, 2012-06-06)
Bromeliaceae owns a huge diversity of species in the Neotropical region, comprising about 3140 species, in which 551 consist of the genus Tillandsia. The article aims the descritption, of the anther development and ovule ...