Impact of copper on germination growth and biochemical change in Blackgram (Vigna mungo (L.) Hepper)

M Parveen, M Muthukumaran

Abstract


Pollution is an undesirable change in physical, chemical and biological characteristic of our environment that will harmfully affect the human life and living organisms. Environment is defined as the total circumstances surrounding an organism, or group of organism especially the combination of external physical, conditions that affect and influence the growth, development and survival of organism. The environment is the sum total of biotic and abiotic conditions influencing the response of organisms. Copper is widely prevalent in our environment and was considered as an essential element for all living organisms including plants. The present investigation has been carried out to assess the Impact of copper on seed germination and biochemical changes of Vigna mungo (L.) Hepper. For this purpose; best cultivars were procured and healthy seeds were collected and surface sterilized before sowing. Seedlings were raised in petri plates lined with filter paper. The seedlings were irrigated with respective concentration of copper (0, 5, 10, 25, 50, 100, 200, 250, 500, 1000 mgl-1). As the result of germination studies it indicate that when there was a progressive increase in copper level there was a gradual decline in rate of germination, seed germination index and root tolerance index value when compared to control. The seedling growth parameters also showed the same level. The copper concentration above 100 mgl-1 (200, 250, 500 and 1000 mgl-1) proved to be lethal to the crop. Based on the results of screening test of cultivars, the cultivar VBN-8 proved to be more tolerant under copper exposure. The cultivar VBN-3 showed poor seed germination and growth characteristic under copper exposure.

Keywords


Copper; Black gram (Vigna mungo); Seed germination; Root Tolerance index and Biochemical

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