Evaluation of Phytotoxic potential of Cyanobacterial extracts in Crop plants (Zea mays & Oryza sativa L.) system
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 1
Abstract
Cyanobacteria from freshwater and also from marine sources produce a wide array of toxic chemicals and secondary or bioactive metabolites. These are mainly nitrogen-rich alkaloids and peptides and are now identified as to pose threats both to human and environmental health as well as on aquatic and terrestrial plants. For the evaluation of phytotoxic effect of Cyanobacteria (Microcystis aeruginosa) on crop plants, Oryza sativa L and Zea mays were selected as test system, Cyanobacterial crude extracts along with Endosulfan (an insecticide), Bavistin (Fungicide), Glyphosate (Herbicide), Lantana camara (Phytotoxin) and Parthenium hysterophorus (Phytotoxin) have been assessed for the analysis of physiological behavior of both the crop plants. The result confirmed that these plants were sensitive to cell-free extracts of a toxic Microcystis aeruginosa and that germination inhibition was dose dependent. Present investigation showed that exposure of Cyanotoxin inhibited the growth and development of both rice and maize seedlings, however more potential in maize than rice. This may suggest as a minimum threshold limit of cyanotoxins, phytotoxins and agrochemicals that can be tolerated by the plants which can be further applied as bio-control agent.
Authors and Affiliations
D. K. Shrivastava
Keywords
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