ALLELOPATHIC EFFECTS OF WEED (Tridax procumbens L.) EXTRACT ON SEED GERMINATION AND SEEDLING GROWTH OF SOME LEGUMINOUS PLANTS
Journal Title: International Research Journal of Pharmacy (IRJP) - Year 2012, Vol 3, Issue 6
Abstract
Aqueous leaves extract of different concentrations of weed (Tridax procumbens L.) was used to investigate their allelopathic effects on seed germination, root and shoot length and fresh and dry weight of some leguminous plants viz. Vigna radiata L. (Green gram), Dolichos biflorus L. (Horse gram) and Vigna unguiculata L. (Cow pea). Mature fresh leaves of weed were crushed and soaked for 24h; the filtrates were diluted to make different concentrations and used to investigate their effect on the test crops. The experiment was carried out in sterilized petriplates with sterilized absorbent cotton kept under natural light dark cycle and was replicated 3 times. The aqueous leaf extract of Tridax procumbens was found to have inhibitory effect on germination, root, shoot elongation and fresh and dry weight of receptor plants. The bioassays indicated that the inhibitory effect was much more pronounced at higher concentrations. The most affected crop was green gram among the test crops. The inhibitory effect was much pronounced in root length as compared to shoot and germination of the receptor crops.
Authors and Affiliations
D Femina , P. Lakshmipriya , S. Subha , R. Manonmani
Keywords
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