Gunjan Joshi, Preeti, Vijeta and D.K. Jain
Department of Botany, Meerut College, Meerut (U.P.)
Abstract: The present study aimed at evaluating the allelopathic effect of aqueous extract of Azadirachta indica leaf on seed germination of some pulses. The aqueous leaf extracts reduced the % germination, shoot/root length, fresh/dry weight and vigour index of seedlings. It also increased the mean germination time of seeds. The allelopathic effect of aqueous leaf extracts of Azadirachta indica increased with increase in the concentration. These result revealed that the inhibitory effect might be due to the presence of some allelochemicals in the aqueous leaf extracts of Azadirachta indica.
Keywords: Extract, Azadirachta indica, Seed germination, Pulses
REFERENCES
Agarwal, A.R., Gahlot, A., Verma, R. and Rao, P.B. (2002). Effect of weed extracts on seedling growth of some varieties of wheat. J. Environ. Biol. 23: 19-23.
Anonymous (2008). International rules for seed testing. Seed Science and Technology.
Babar, B.H., Tanveer, A., Tahir, M., Aziz, A., Ahmad, A.U.H., Nadeem, M. A. and Javaid, M.M. (2009). Allelopathic potential of wild onion (Asphodelus tenuifolius) on the germination and seedling growth of chickpea (Cicer arietinum). Weed Biol. Manag. 9: 146-151.
Channappagoudar, B.B., Jalager, B. R., Biradar, N. R. (2005). Allelopathic effect of aqueous extracts of weed species on germination and seedling growth of some crops. Karnataka J. Agric. Sci. 18: 916-920.
Dongre, P. N. and Yadav, B. (2005). Inhibitory allelopathic effect of weed leaf leachates on seed germination of pea (Pisum sativum L.). Crop Res. Hisar 29: 458-461.
Ellis, R. A. and Roberts, E. H. (1981). The quantification of ageing and survival in orthodox seeds. Seed Sci. Technol. 9: 373-409.
Keeley, P. E. (1987). Interference and interaction of purple and yellow nutserge (Cyperus rotundus and Cyperus esculentus). Crops weed Technol. 1: 74-81.
Molisch, H. (1937). Der Einfluss eine Pflanze auf die andere: Allelopathie. Gustav Fischer, Jena.
Stavrianakou, S., Liakoura, V., Levizou, E., Karageorgou, P., Delis, C., Liakopoulos, G., Karabourniotis, G., Manetas, G. and Manetas, Y. (2004). Allelopathic effect of water-soluble leaf epicuticular material from Dittrichia viscose on seed germination of crops and weed. Allelopathy J. 14: 35-41.