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Allelopathic Effects of Celosia argentea L. Root Extracts on Crop Plant Seed Germination

P. Saritha and A. Sreeramulu
Department of Botany, S.V.University, Tirupati, AP 517502.
Abstract—One of the most famous allelopathic plants is cocks comb ( Celosiaargentea L.) The effects of different concentrations of Celosia argentea L. root extracts on seed germination and seedling growth of jowar ( Sorghumbicolor ), green gram ( Phaseolous aureus), groundnut ( Arachis hypogaea ), hyacinth bean ( Dolichos lab lab ) and cowpea ( Vigna unguiculata ) was studied. The average growths of radicle and plumule was measured and compared. 1%, 2%, 3% & 5% aqueous extracts of root inhibited seed germination and seedling growth of crop plant seeds. The percentage of seed germination and seedling growth of crop plant seeds decreased with concentration of root extracts used. The reduction of germination percentage may be due to the presence of allelochemicals of Celosia argentea L which is reported to contain hyaluronic acid, celosianin, betanin and isocelosianin. Among the five crop plant seeds, C.argentea root extract showed more inhibitory effect on growth of seedlings of green gram (0%).

Index Terms—L. weed, Allelopathy, Allelochemicals

Cite: P. Saritha and A. Sreeramulu, "Allelopathic Effects of Celosia argentea L. Root Extracts on Crop Plant Seed Germination," International Journal of Life Sciences Biotechnology and Pharma Research, Vol. 2, No. 1, pp. 142-154, January 2013.
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