Results 181 to 190 of about 18,129 (221)

An ultrastructural comparison betweenSpermatozopsis andDunaliella (Chlorophyceae)

Plant Systematics and Evolution, 1984
The ultrastructure of the type species of the genusDunaliella, D. salina, has been reinvestigated in an attempt to clarify the relationships betweenDunaliella andSpermatozopsis. Dunaliella salina differs in the following ultrastructural characters fromSpermatozopsis (as exemplified byS.
Michael Melkonian, Hans Rudolf Preisig
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Zwei neue Sippen vonScotiella (Chlorophyceae)

�sterreichische Botanische Zeitschrift, 1964
Scotiella tuberculata var.verrucosa n. var. undScotiella spinosa n. sp. leben aerophytisch auf verwittertem Holz und befinden sich wahrend des Sommers im Dauerzellzustand; ihre aktive Lebenstatigkeit entfalten sie vermutlich wahrend der Schneeschmelze im Fruhjahr.
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ADAPTATION OF SELENASTRUM CAPRICORNUTUM (CHLOROPHYCEAE) TO COPPER

Environmental Toxicology and Chemistry, 1986
Abstract Selenastrum capricornutum Printz, growing in a chemically defined medium, was used as a model for studying adaptation of algae to a toxic metal (copper) ion. Cells exhibited lag-phase adaptation to 0.8 μM total Cu (10−12 M free ion concentration) after 20 generations of Cu exposure.
J.S. Kuwabara, H.V. Leland
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Das Rhizoid vonUlothrix zonata (Chlorophyceae)

Plant Systematics and Evolution, 1977
Ulothrix zonata was studied under natural conditions in situ on slides exposed in a river. On them specimens grow in all stages of development. Older filaments are fixed on the substrate not only by the pointed basal cell but mainly by a branched, horizontally expanded rhizoid produced by this cell.
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INVERSION IN VOLVOX (CHLOROPHYCEAE)1

Journal of Phycology, 1977
ABSTRACTThe asexual embryos of Volvox turn themselves inside out (invert) during development. Data presented indicate that inversion of the embryos is the result of several simple cellular shape changes, coordinated in space and time. Using whole embryos, cell groups and individual embryonic cells isolated by watchmaker's forceps and pressure on the ...
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Genealogy in Microspora (Chlorophyceae)

2000
The genealogical relationships in the green algal genus Microspora (Chlorophyceae) are determined by phylogenetic analysis based on 15 ecological, morphological and reproductive characters. It is found that the traditional defining characters like cell shape and distinctness of the H-shaped pieces (composing the cell wall) play a major role in rooting ...
Jong, Y.S.D.M. (Yde) de, Lokhorst, (Gijsbert M.), Kruijer, J.D. (Hans)   +2 more
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THREE CHLOROPHYCEAE FROM ALABAMA SOIL

American Journal of Botany, 1959
Deason, Temd R. (U. Texas, Austin.) Three Chlorophyceae from Alabama soil. Amer. Jour. Bot. 46(8): 572–578. Illus. 1959.— Three new algae from Alabama soil are described as follows: Spongiococcum gen. nov., with 2 species, S. tetrasporum sp. nov. and S. alabamense sp. nov.
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Note sur le genreChoricystis (Chlorophyceae)

Schweizerische Zeitschrift für Hydrologie, 1979
Dans ce travail nous discutons la position systematique du genreChoricystis, nous etudions ses especes et nous essayons d'eclaircir la synonymie. Nous considerons que le genre est compose de cinq especes. L'etude a ete realisee principalement sur la base des diagnoses originales et des iconotypes.
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?????????????????????? ?????????????????????????????? ???????????????????? ?????????????? Sphaeropleales (Chlorophyceae) ?? ?????????????????????? ???????????????? ??????????

2014
In the investigated water bodies 91 species represented by 99 infraspecific taxa (infr. taxa) of Sphaeropleales are revealed. found Maximal number of species 62 (65 infr. taxa) in the rivers followed by reservoirs, 58 species (62 infr. taxa); lakes, 29 species (33 infr. taxa); swamps, 55 species (61 infr. taxa) and ponds, 53 species (56 infr. taxa) was
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???????????????????? ?????????????????????????????? ?????????????????????????? ?????????????? ???????????????????? (chlorophyta, Chlorophyceae) ?? ???????????????????? ???????????????????????????? ?????????? ???????????????? ?????? ????????-?????????????? ?????? ???????????????????????????????????? ????????????????????????

2017
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