Evaluation of air pollution phytotoxicity in a seasonally dry tropical urban environment using three woody perennials
Article first published online: 28 APR 2006
Volume 126, Issue 1, pages 53–61, January 1994
How to Cite
PANDEY, J. and AGRAWAL, M. (1994), Evaluation of air pollution phytotoxicity in a seasonally dry tropical urban environment using three woody perennials. New Phytologist, 126: 53–61. doi: 10.1111/j.1469-8137.1994.tb07529.x
- Issue published online: 28 APR 2006
- Article first published online: 28 APR 2006
- (Received 9 March 1993; accepted 30 August 1993)
- Urban air pollution;
- tropical Tree species
A two-year study was conducted in the urban environment of Varanasi, India, to evaluate plant responses to urban air pollution. Three species including a shrub (Carissa carandas L.) and two tree species (Delonix regia Rafin and Cassia fistula L.) were grown in pots at selected study sites. Changes in plant performance were considered in relation to the status of ambient air quality.
Reductions in plant height, basal diameter, canopy area, plant biomass and chlorophyll, ascorbic acid and nitrogen contents in leaves were correlated with air pollution level at different sites. The magnitude of response indicated the relative sensitivity of the three species in the order D. regia > C. fistula > C. carandas. Shifts in relative contribution of photosynthate to leaf production and shoot growth appear to be a pollution-induced adaptive response in C. carandas. The study shows that the urban air pollution level at Varanasi is detrimental to the growth of plants.