MORPHOTOXICITY OF FUNGICIDE MANCOZEB ON TWO GENOTYPES OF VIGNA
Journal Title: International Journal of Botany and Research (IJBR) - Year 2017, Vol 7, Issue 2
Abstract
Fungicides are expected to protect crop plants from fungi infection without harming the crop plants. Mancozeb (MZ), [[1,2-ethanediylbis-[carbamodithio- ato]] (2-)] manganese, mixture with [[1,2-etha-nediylbis-[carbamodithioato]]-(2-)] zinc, is a fungicide of the carbamate pesticide family. Registered for use on a variety of vegetables, fruits, nuts and grain crops, it is also used for seed treatment of cotton, potatoes, corn, safflower, sorghum, peanuts, tomatoes, flax, and cereal grains. In present study, toxic influence of mancozeb, commonly used fungicide in agricultural practices was checked on seed and seedling growth of two pulses namely Vigna radiata and V. mungo. The objective of this study is to determine the rate of germination, survival, root shoot ratio, tolerance index, vigour index and phytotoxicity of the two genotypes seeds exposed to eight concentration of MZ viz. 10, 30, 50, 70, 90, 110, 130 and 150 ppm assessed after 7 and 15 days of fungicide treatment. In general the seeds of both Vigna genotypes showed a marginal decrease in the rate of germination, survival, root shoot ratio, tolerance index, vigour index and phytotoxicity in 10 ppm over the control. There was gradual and significant decrease in rate of germination, survival, root shoot ratio, tolerance index, vigour index and phytotoxicity at higher concentration concentrations of mancozeb. The maximum inhibition was observed in higher concentration of mancozeb (150 ppm). But the results showed that increasing mancozeb concentrations caused reduction in all the studied parameters of seedlings in both the genotypes but response was different among genotypes.
Authors and Affiliations
FIRDOS FATMA, AISHA KAMAL, ALKA SRIVASTAVA
Keywords
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