Allelopathic Potentialities of Different Concentration of Aqueous Leaf Extracts of Some Arable Trees on Germination and Radicle Growth of Cicer arietinum Var. - C-235.

Abstract: A laboratory experiment was conducted to assess the potential allelopathic effects of different concentrations of aqueous leaf extracts of Ficus infectoria, Emblica officinalis and Acacia leucophloea on germination and root elongation using leguminous crop Cicer arietinum L. as bioassay material. The experiments were conducted in sterilized petridishes. The effect of the different concentration of aqueous extracts was compared to distil water (control). The result revealed that different concentrations of Emblica officinalis and Acacia leucophloea extracts caused highly significant and significant inhibitory effect on germination and root elongation. Bioassays indicated that the inhibitory effect was proportional to the concentrations of the extracts and higher concentration has the stronger inhibitory effect. The study also revealed that inhibitory effect was much pronounced in root development rather than seed germination. Key words: Emblica officinalis Acacia leucophloea Ficus infectoria Root length Germination INTRODUCTION release different amounts of the phytotoxins. Generally The term “allelopathy ” signifies the interactions however, the toxic metabolites are also distributed in all between plants might lead to either stimulation or other plant parts in various concentration. inhibition of growth. Different groups of plants like; Higher plants (tree crops) release some phytotoxins