Evaluation of seed germination development and initial growth of cotton plants exposed to cadmium
Abstract
This research evaluated the phytotoxic effects of cadmium on the germination development and initial growth of Gossypium hirsutum L. The ecotoxicological effects of 13 experimental concentrations of cadmium (0.0-50.0 mM) on variables like germination percentage, GSI, average germination time (AGT) and root length were evaluated. G. hirsutum seeds exposed to cadmium showed a decrease in germination percentage and an increase in the number of normal plantules from the concentrations 18.0 and 3.0 mM, respectively. It also inhibited root growth and increased the AGT from the exposure to the concentration 0.5 mM, reducing the GSI. G. hirsutum is tolerant to cadmium during its germinal stage.
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References
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