Abstract
The current study was done to examine the impact of environmental pollution on morphology and anatomy of leaf of Ricinus communis L. of Kathmandu. The comparative study was done between the plants of high polluted sites i.e Ringroad sides and less polluted sites i.e Raniban forest of Kathmandu. The plants from both sites showed visible morphological and anatomical changes in leaves. These both study sites were found with similar soil factors and climatic factors. Reductions in some morphological and anatomical features were observed in leaves growing in highly polluted site. Reduction in leaf area, petiole length, thickness of palisade layer and thickness of spongy parenchyma was noticed in the leaves from highly polluted sites of Kathmandu. Other morphological and anatomical features such as leaf dry mass content, stomata frequency, thickness of cuticle and size of epidermal cells were noticed to be increased in leaves from highly polluted sites.
 Int. J. Appl. Sci. Biotechnol. Vol 7(2): 274-278
Highlights
Leaf is the most sensitive and exposed part to be affected by air pollutants instead of all other plant parts such as stems and roots (Leghari and Zaidi, 2013)
This study was focused on the impact of air pollution on the morphology and anatomy of leaves of R. communis
The leaves of R. communis growing in highly polluted site possess increased dry mass content, reduction in leaf area and petiole length
Summary
Leaf is the most sensitive and exposed part to be affected by air pollutants instead of all other plant parts such as stems and roots (Leghari and Zaidi, 2013). The increasing number of industries and automobiles vehicles is continuously adding toxic gases and other substances to the environment (Jahan and Iqbal, 1992). Such pollutants include sulphur and nitrogen oxides, carbon monoxides and soot particles as well as smaller quantities of toxic materials (Agbaire and Esiefarienrhe, 2009). Plants leaf acts as the scavengers for many air borne particulates in the atmosphere
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