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International Review of Hydrobiology, 1980
Abstract214 taxa under 21 genera of desmids have been described and illustrated from Bangladesh, of which 3 species and 8 varieties are new to science.
A. K. M. Nurul Islam, A. K. Yusuf Haroon
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Abstract214 taxa under 21 genera of desmids have been described and illustrated from Bangladesh, of which 3 species and 8 varieties are new to science.
A. K. M. Nurul Islam, A. K. Yusuf Haroon
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Wavelength dependence of photomovement in desmids
Planta, 1979The action spectra of phototaxis, photokinesis, and photophobic response of Cosmarium cucumis, C. botrytis, C. margaritiferum, and Micrasterias denticulata show peaks in the blue (about 440 nm) and red (about 670 nm) spectral regions and thus indicate the involvement of photosynthetic pigments.
K, Wenderoth, D P, Häder
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Canadian Journal of Botany, 1965
Diploids of four species of desmids were produced in culture. Morphological and cytological evidence of their diploidy is presented. A possible tetraploid was also detected. It is suggested that diploidy also occurs in nature. The taxonomic position of various forms of diploids with respect to the haploid forms is discussed.
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Diploids of four species of desmids were produced in culture. Morphological and cytological evidence of their diploidy is presented. A possible tetraploid was also detected. It is suggested that diploidy also occurs in nature. The taxonomic position of various forms of diploids with respect to the haploid forms is discussed.
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Desmids and Dinoflagellates of Ecuador
Journal of Phycology, 2002AbstractThe freshwater flora of Ecuador is poorly known. This report provides preliminary information about the freshwater Pyrrhophyta and two families in the Chlorophyta. There has been some work on diatoms but other groups remain unstudied. In June 2001, samples were collected as whole water or by using a 10‐mm plankton net from 52 locations in the ...
S. Carty, J. D. Hall
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The effect of acetolysis on desmids
Palynology, 2016ABSTRACTAcetolysis, an oxidising technique common in palynological preparation, is beneficial for pollen analysts who employ it to remove ‘unwanted’ organic matter from peat and lake samples. Since this technique was introduced by G. Erdtman in 1934, however, several researches have noted concerns, such as the destruction of thin-walled pollen grains ...
Nicholas L. Riddick +3 more
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Feddes Repertorium, 1990
AbstractThe present paper treats 33 taxa of desmids belonging to 8 genera collected from ponds, paddy fields, ditches and streams of Quilon district, Kerala. Of these, Cosmarium clepsydra NORDST. var. duplex PRESCOTT, Cosmarium depressum (NÄG.) LUND f., Cosmarium reniforme (RALFS) ARCHER var. compressum NORDST.
C. Shaji, R. J. Patel
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AbstractThe present paper treats 33 taxa of desmids belonging to 8 genera collected from ponds, paddy fields, ditches and streams of Quilon district, Kerala. Of these, Cosmarium clepsydra NORDST. var. duplex PRESCOTT, Cosmarium depressum (NÄG.) LUND f., Cosmarium reniforme (RALFS) ARCHER var. compressum NORDST.
C. Shaji, R. J. Patel
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Induced Resistance in a Desmid Closterium moniliferum
Radiation Research, 1976When exposed to fast electrons at high dose rate, all cells of Closterium moniliferum survive (form colonies) up to a threshold dose of about 10 krad. If previously exposed to a dose between 0.14 and 10 krad they can survive higher threshold doses. We call this induced resistance and measure its extent by the ratio of doses to give the same killing ...
A, Howard, F G, Cowie
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Desmids new to Kerala, India‐1
Feddes Repertorium, 1995AbstractThe present paper deals with 38 taxa of desmids collected from the paddy fields in Kerala State. Of these, Closterium toxon WEST, Tetmemorus laevis (KÜTZ.) RALFS, Euastrum subhexalobum WEST & WEST var. scrobiculatum GRÖNBL., Cosmarium connatum BRÉBISSON and Bambusina borreri (RALFS) CLEVE var. borreri are supposed to be new to India.
P. Sindhu, M. V. N. Panikkar
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Studies on Desmids and their Protoplasts
Zeitschrift für Pflanzenphysiologie, 1978Summary Protoplasts were successfully induced in 9 species of Cosmarium , and one species each of Netrium, Closterium and Staurastrum , by the addition of 0.4M mannitol and 1% Cellulysin to defined mineral media. All formed true protoplasts as determined by osmotic fragility and lack of fluorescence following staining with 1% Calcofluor ...
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