Results 181 to 190 of about 898,912 (212)

Phylogenetic Studies in Alismatidae, II: Evolution of Marine Angiosperms (Seagrasses) and Hydrophily

Systematic Botany, 1997
Aquatic species represent fewer than two percent of all flowering plants, and only 18 aquatic genera have acquired true hydrophily (water-pollination) which is associated with an unusually high incidence of unisexual flowers. From the subset of submersed, hydrophilous angiosperms, only 13 genera have colonized marine habitats.
D. Les, M. A. Cleland, M. Waycott
semanticscholar   +2 more sources

POLLEN WALL AND STIGMA SURFACE IN THE MARINE ANGIOSPERMS THALASSIA AND THALASSODENDRON.

Micron (1969), 1976
Abstract The pollen wall and stigma surface of two tropical sea-grasses, Thalassia hemprichii and Thalassodendron ciliatum , have been investigated by electron microscopy and optical cytochemistry. In the spherical inaperturate pollen of Thalassia the exine consists of free bacula with a rudimentary foot layer and endexine. Non-specific esterase
J. Pettitt
semanticscholar   +2 more sources

Population biomass and metabolic rates of marine angiosperms on the northwestern Cuban shelf

Aquatic Botany, 1975
Abstract Data on population biomass of turtle grass ( Thalassia testudinum ), manatee grass ( Syringodium filiforme ), and two species of the genus Halophila (H. decipiens and H. engelmanni ) from the northwestern Cuban shelf, as well as on metabolic rates of these and Halodule beaudettei , are given in this paper.
R. Buesa
semanticscholar   +2 more sources

Floral structure in the marine angiosperms Cymodocea serrulata and Thalassodendron ciliatum (Cymodocea ciliata)

Botanical Journal of the Linnean Society, 1971
Several female flowers were found on plants of Cymodocea serrulata collected in Mida Creek, Kenya, during August 1969. The structure of the female inflorescence of C. serrulata, previously known only from one fragmentary example, is described and shown to be very similar to that of C. angustata Ostenf.
Q. Kay
semanticscholar   +2 more sources

Aspects of flowering and pollinisation in marine angiosperms

, 1984
J. Pettitt
semanticscholar   +2 more sources

Water Plants: THE LIFE-HISTORY OF THE MARINE ANGIOSPERMS

, 2010
A. Arber
semanticscholar   +2 more sources

An underlying mechanism of qE deficiency in marine angiosperm Zostera marina

Photosynthesis Research, 2021
Non-photochemical quenching (NPQ) of photosystem II (PSII) fluorescence is one of the most important protective mechanisms enabling the survival of phototropic organisms under high-light conditions. A low-efficiency NPQ, characterized by weak NPQ induction capacity and a low level of protective NPQ, was observed in the marine angiosperm Zostera marina,
Wei Zhao, Quan Sheng Zhang, Ying Tan, Zhe Liu, Ming Yu Ma, Meng Xin Wang, Cheng Ying Luo   +6 more
openaire   +2 more sources

Polymorphic microsatellite loci for the marine angiosperm Cymodocea nodosa

Molecular Ecology Notes, 2004
AbstractThe seagrass Cymodocea nodosa (UCRIA) Ascherson represents a good model to assess the relative contribution of clonal and sexual reproduction to genetic structure in marine plant populations. Seven microsatellite loci with repeat units consisting of one trinucleotide, four simple dinucleotides and two complex dinucleotides are described here ...
Ruggiero, M., Reusch, T., Procaccini, G.
openaire   +2 more sources

Inbreeding depression influences genet size distribution in a marine angiosperm

Molecular Ecology, 2003
AbstractAlthough inbreeding depression is a major genetic phenomena influencing individual fitness, it is difficult to measure in wild populations. An alternative approach is to correlate heterozygosity, measured using highly polymorphic markers, with a fitness‐correlated trait. In clonal plants, genet size is predicted to be fitness correlated.
Hämmerli, A., Reusch, T.
openaire   +3 more sources

Seagrasses, the unique adaptation of angiosperms to the marine environment: effect of high carbon and ocean acidification on energetics and ion homeostasis.

Halophytes and climate change: adaptive mechanisms and potential uses, 2019
As a functional group, seagrasses form highly productive ecosystems present along the coasts of all continents (except Antarctica), where they rival tropical rainforests and coral reefs in ecosystem services (Costanza et al., 1997; Fourqurean et al ...
L. Rubio, J. A. Fernndez
semanticscholar   +1 more source