Abstract
Plants are sensitive to pollution and especially air pollution can alter the physiological processes of plants affecting growth patterns. Study was carried out to determine the IAA production and response of plants exposed to vehicular emission. Two plant species namely Tecoma stans and Ixora coccinea which were exposed to roadside vehicular pollution were taken and control plants were collected from the college campus (unpolluted zone) and Estimation of IAA is carried out using Salkowski reagent, which upon reaction with IAA, yields pink color, due to AA complex formation and reduction of Fe+3. A decrease and increase in IAA concentration was observed in Tecoma stans and Ixora cocenia respectively growing in pollution zones as compared to control zones clearly demonstration air pollution stress.
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