EFFECT OF SELECTED HEAVY METALS (LEAD AND ZINC) ON SEEDLING GROWTH OF SOYBEAN GLYCINE MAX (L.) MERR
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2016, Vol 8, Issue 8
Abstract
Objective: This study was designed to evaluate the effects of different concentrations of both zinc (250, 500, 750, 1000 and 1250 mg/kg) and lead (200, 400, 600, 800, 1000 mg/kg) as zinc sulphate and lead acetate respectively on 7days seedling of soybean (Glycine max (L.) Merr.)Methods: To investigate morphological growth parameters seedlings were cut at the root-shoot junction and the length of their root and shoot was measured with a metric scale and expressed in centimetre’s. The fresh weight of seedling samples was recorded on an analytical balance and expressed in gram per seedling. Later, seedlings were dried in an oven at 80o C for 24 h to get constant dry weight. After 24 h the dry weight was recorded.Results: The study revealed that elevated dose of lead concentrations reduces the growth parameter as compared to control. Lead concentrations of 1000 mg/kg significantly decreased the percentage of germination and root length. However, at low levels of zinc (250 and 500 mg/kg) showed increased germination percentage and also increase root length shoot length. But at high levels (750–1250 mg/kg) showed a detrimental effect on the growth parameter and germination.Conclusion: Consequently, higher concentrations of heavy metals had an increased inhibitory effect on seed germination percentage, root length, shoot length, tolerance index, fresh weight and dry weight of soybean seedlings, but the low concentration of zinc can be applied for increasing the growth and yield of soybean plants.
Authors and Affiliations
Siddhi Gupta, Manoj Kr. Meena, Soumana Datta
Keywords
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