Akil A. Khan

Assistant Professors, Department of Botany, Gandhi Faiz-e-Aam College, Shahjahanpur-242001 (India) (Affiliated to M.J.P. Rohilkhand University, Bareilly, Uttar Pradesh, India) E-mail: akil_nbri@yahoo.com


The allelopathic potential of Eclipta alba using Malva sylvestris L. as model plant. The different concentrations (0.5%, 1%, 2%, 4%) of cold and hot aqueous extract of different parts of Eclipta alba were applied to determine their effect on emergence percentage, radicle and plumule length of test plant. The seeds of test plant were soaked on filter paper of Petri dishes (4" diameter) moistened with respective extracts. The treatments were arranged in completely randomized design with three replicates of each concentration. A control was set up having the filter paper saturated with water only. Both the cold and hot water extract have no effect on emergence percentage. Aqueous extracts from all parts (root, stem, leaf) reduced plumule and radicle length of the test plant. It was observed that hot water extract of leaves, stem and root shown more inhibitory effect than cold water extract. The reduction in both cases were in this order; leaves.>root>stem.

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