Abstract

In the present work an attempt was made to reclamation the sodium chloride stressed plant with calcium chloride. For this work, Zea mays var. – co – 24 was cultivated in control, NaCl alone, and in combined salt (NaCl + CaCl₂). From the present study it is observed that Zea mays could survive up to 40mM NaCl alone and combined salt (40mM NaCl +5mM CaCl₂); However, the favorable growth responses were confined to combined salt (10mM NaCl +5mM CaCl₂). NaCl treatment decreased the growth parameters such as percentage of seed germination, shoot and root length, number of leaves, fresh and dry weight of leaf, stem and root of Zea mays as compared with control plants. However the supplemental calcium chloride increase the growth parameter as compared to plants stressed with NaCl.

A3Effect of CaCl2 on growth

Abstract

            The tannery effluent is a mixture of biogenic matter of hides and a large variety of organic and inorganic chemicals. It usually contains high concentration of toxic metals like copper, chromium, zinc, cadmium, nickel and chemicals like aliphatic sulfonates and cyanides. The use of plants for bioremediation is called as phytoremediation. It involves the use of green plants to decontaminate soil, water and air. It is a cost effective process and the end products are nonhazardous. In the present study a hyper accumulating plant Brassica juncea was grown in different concentrations of effluent and their biochemical parameters carotenoid, chlorophyll, chromium, nickel and zinc were analyzed in leaves, stem and seeds. The results show that the heavy metal contents were higher in stem compared to leaves indicating the transports of these are high in stem. Chlorophyll and carotenoid contents  of  plants treated with  25 per cent  effluent was higher compared to  50 per cent effluent treated plants. Higher the dilution lesser the harmful effect of effluent on the plants.

A1Tannery Effluent pdf