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Effect of automobile pollution on Chlorophyll content of road side herbs along NH-31 from Katihar to Purnea (Bihar)

Preeti Kumari*
Department of Botany, R.M. College, Saharsa, B.N.M.University, Madhepura, Bihar, India
Received : 19th November, 2021 ; Revised : 9th January, 2022

Abstract– Automobile exhaust contains a large no. of air pollutants such as carbon monoxide, unburnt hydrocarbons, Sulphur and nitrogen oxide, tetraethyl lead and tetramethyl lead and several other lead compounds. These air pollutants adversely affect road side herbs by decreasing their chlorophyll content. In the present study, chlorophyll content of 10 herbs (Catharanthus roseus, Ageratum conyzoides, Tridax procumbens, Acalypha indica, Phyllanthus nururi, Parthenium hysterophorus, Croton sparsiflorus, Euphorbia hirta, Emilia sonchifolia, Phyla noduliflora) was estimated in road side plants and countryside plants i.e. one km away from the road side in summer season. The chlorophyll contents of road side herbs were less than those of countryside herbs.

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