IMPACT OF BUILDING CONSTRUCTION-DUST ON FOLIAR BIOCHEMISTRY OF DELONIX REGIA (BOJ.EX.HOOK.) RAF. AND PELTOPHORUM PTEROCARPUM (DC) BACKERVAISHNAVI V. MOREAbstract The natural environment has been depleted too rapidly by manmade activities. An increased building construction activity is causing destruction of environment. In the present investigation, the impact of building construction dust on selected foliar biochemical parameters of Delonix regia (Boj.ex.Hook.)Raf. and Peltophorum pterocarpum (DC) Backer. from Subfamily-Caesalpineae have been studied. Biochemical study showed a significant increase in leaf pH and proline content and a significant decrease in chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid. Soil and dust pH at experimental site increased significantly showing alkaline nature. Conductivity of soil and dust at building construction site showed a significant rise. The results proved that building construction-dust has significantly affected Delonix regia (Boj.ex.Hook.) Raf. and Peltophorum pterocarpum (DC) Backer. biochemically. Reduction in flowering was also observed due to effect of building construction-dust
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