ISSN:
1573-2932
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract The water extract of a light Nigerian crude oil had pronounced effects on the growth, metabolism and development of radish (Raphanus sativus) plants. In addition to hydrocarbons (ca. 7 mg l−1) the extract contained phenols (ca. 0.6 mg l−1), carbonyl compounds, and carboxylic acids. Although seed germination was virtually unaffected, the growth of both above- and below-ground parts was significantly inhibited when the plants were watered with the extract rather than with well water. In addition, the onset of flowering was significantly delayed in the extract-treated plants, and the number of plants which ever flowered was reduced. Significantly increased respiration was observed in leaf tissue of the extract-treated plants, but photosynthetic carbon fixation was not significantly affected. The extract appeared to elicit effects similar to those caused by other forms of environmental stress, such as infections.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00250012
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