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Articles by Zamin Shaheed Siddiqui
Total Records ( 2 ) for Zamin Shaheed Siddiqui
  S. Shahid Shaukat , Mohammad Mushtaq and Zamin Shaheed Siddiqui
  The effect of heavy metals including lead, chromium and cadmium on germination, seedling growth, dry biomass accumulation and phenolic contents of two species viz. Pennisetum americanum and Parkinsonia aculeata were studied. Chromium and cadmium were applied as chloride while lead was used both as nitrate and chloride. Final germination percentage was greatly reduced by cadmium, chromium and lead salts in both the test species at concentrations of 50 ppm or more. Germination reduction was markedly higher in Pennisetum americanum compared to Parkinsonia aculeata treated with cadmium and chromium. Lead chloride inhibited germination more severely than did lead nitrate. Both root and shoot growth were also reduced significantly by Cd, Cr and PbCl2. In both the species root growth was inhibited to a greater extent than shoot growth. Phenolic contents were substantially elevated in both the test species following treatment with heavy metals particularly at higher concentrations (200 and 400 ppm). Parkinsonia aculeata was less affected in terms of germination, root and shoot growth and dry matter accumulation as compared to Pennisetum americanum, exhibiting some degree of tolerance to heavy metals.
  Neelofur Hameed , Zamin Shaheed Siddiqui and Soaliha Ahmed
  Effects of copper and lead chloride on germination, accumulation and stress phenolics were studied. Lead chloride significantly reduced the germination, increased accumulation and total phenols in two tested species (S. oleracea and L. esculentum). Maximum inhibition was recorded in plants when treated with 150ppm lead as compared to copper treated sample and control.
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