Published Paper Details:

For the evaluation of phytotoxic levels of aquous extracts of leaf, stem and root of Parthenium hysterophorus on the rate of seed germination, length of root and shoot and Seed Vigour Index in Triticum aestivum, laboratory experiment in petri dishes was conducted in the Department of Botany, Jai Prakash University, Chapra in 2017. The treatments were 15%, 25%, 50%, 75% and 100% concentrations of aquous extracts of leaf, stem and root of Parthenium. Data collected on seed germination, length of root and shoot and SVI values were analysed using SPSS programme for Pearsons Correlation Coefficient, Tukey HSD and Post HOC tests. The inhibition rate in seed germination ranged from 6.49 to 75.32; 6 to 22; and 0 to 2%, whereas inhibition rate in root length varied from 20.06 to 37.46%, 6.45 to 43.45% and 1.69 to 24.78% respectively in leaf, stem and root extracts. The inhibitory impact of leaf extract was observed more on SVI values compared to stem and root extracts. The impact of different plant parts, treatments and interaction of plant parts and treatments did not differed significantly for the rate of seed germination, however root length and shoot length values were significantly different at p < 0.000. The phytotoxic impact was recorded for root length and shoot length of T.aestivum however the rate of seed germination was not inhibited significantly. On the basis of phytotoxicity levels the plant parts of Parthenium for T.aestivum can be arranged as leaves > stems > roots.