Promoting effects of fruit leachates from Teak (Tectona grandis) on seed germination of rice and green gram

Abstract

The allelopathic effect of Teak (Tectona grandis Linn.f.) fruit leachates on the germination and vigour characteristics of Rice (Oryza sativa Linn.) and Green Gram (Vigna radiata (Linn.) Wilczek) seeds was studied under laboratory conditions. The Rice and Green Gram seeds were soaked directly in the Teak fruit leachates of different days or in distilled water and subsequently wetted during germination with the leachate or distilled water. The germination characteristics of Rice and Green Gram seeds increased significantly due to the application of Teak fruit leachate. Largest effect was recorded generally due to first day’s leachate and the effect declined due to subsequent days’ leachate.