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4. Coat-imposed dormancy by coumarin in radish seeds: the influence of light

Author

S. Strumia, A. Fuggi, G. Aliotta, Aliotta, G, Fuggi, Amodio, and Strumia, Sandro

Subjects
Radish seed, Coat, Light, biology, Chemistry, Raphanus, Plant Science, Coumarin, biology.organism_classification, chemistry.chemical_compound, Germination, Botany, Darkness, White light, Dormancy, Ecology, Evolution, Behavior and Systematics
Abstract

Continuous white light induced a secondary dormancy in 40% of radish seeds (Raphanus sativus L. “Saxa”); this value was increased to 80% by coumarin 2 x 10 4 M. Either darkness or removal of the coat were found to be dormancy breaking agents for seeds not germinated in the above conditions. © Taylor & Francis Group, LLC.

Published
1992
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5. Observations on tolerance to heavy metals of four green algae in relation to pH

Author

Antonino Pollio, Gabriele Pinto, Giovanni Aliotta, Aliotta, G., Pinto, Gabriele, and Pollio, A.

Subjects
Stichococcus, Chlorella, biology, Algae, Coenochloris, Botany, Stichococcus bacillaris, Metal toxicity, Heavy metals, Green algae, Plant Science, biology.organism_classification, Ecology, Evolution, Behavior and Systematics
Abstract

The inhibition of growth by different concentration of eight heavy metals: Cd, Cr, Co, Cu, Hg, Ni, Se and Tl, in inorganic medium at pH 3 and 6.5, was studied in four green algae: Chlorella protothecoides Kruger, Chlorella saccharophila (Kruger) Migula, Coenochloris sp. and Stichococcus bacillaris Naegeli. The results suggest that pH has an important effect on heavy metal toxicity in algae although it is difficult to establish a relationship between pH and heavy metals.

Published
1983
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