Paper Title
Allelopathic Effect of Nyctanthes Arbor-Tristis l. on seed Germination

Methanolic extract derived from the leaves of the flowering plant Nyctanthes arbor - tristis, was used to determine its allelopathic potential in relation to the seed germination of various plants; Vigna radiata, Vigna unguiculata, Brassica nigra, Cicer arietinum, Lablab purpureus, Amaranthus dudius, Trichosanthes anguina, Chaseolus vulgaris, Oryza sativa, Cucumis sativus, Denincasa histida, Psophocarpus tetragonolobus, and Setaria italic. The extract induced almost 100% germination inhibition and all the tested seeds were attacked by fungi. Only the seeds of Chaseolus vulgaris showed slight resistance towards this extract. The germination study was conducted by the petri dish method. The results revealed the strong allelopathic potential of Nyctanthes arbor - tristis which necessitates further studies to test its allelopathic effect under field condition and to identify the toxic principle, their quantification and efficacy in the soil. Keywords - Allelopathy, germination, inhibition, Nyctanthes arbor - tristis