The effects of coal-smoke pollutants on the growth, yield and leaf epidermal features of Abelmoschus esculentus moench.
In Abelmoschus esculentus var. Pusa Sawani, coal-smoke pollutants, experienced close to a thermal power plant, led to decreases of plant height and stem diameter, jeopardised the production of leaves and flower buds and stimulated leaf and flower fall, leading to a decrease in the number of fruits set per plant. The length of fruits was affected a little, and the circumference and fresh weight suffered significantly, causing a decrease in plant yield. The net productivity of stems, roots and leaves incurred losses of 22.5%, 24.0% and 37.5%, respectively, and resulted in a 28.3% loss in the total net productivity of polluted plants. A decrease in stomatal density, aperture and index, and a lower density of epidermal cells of greater dimensions were observed on both the leaf surfaces. Abnormalities of the stomatal complexes were also observed on the upper surface of polluted leaves.
Gupta
M C
MC
Department of Botany, D.S. College, Aligarh-202001, India.
Ghouse
A K
AK