Allelopathy Effects of Water Extract from Leaves of Lagenaria siceraria var. hispida on Vegetable Seeds
The allelopathy of water extract from the leaves of Lagenaria siceraria var.hispida on the seed germination of cucumber,radish and tomato were investigated by adopting indoor petri dish bioassay in order to provide the scientific basis of continuous cropping barrier solution in production practice.It is found that the water extract at the concentrations of 10,50 and 90 g/L had significant inhibiting effects on the seed germination rates of cucumber and radish.The germination rates of cucumber and radish were lower in the treatments with 10,50 and 90 g water extract/L than in the control with distilled water.The seed germination rate of tomato was increased at lower concentrations,and decreased at higher concentration.The plant height and the fresh weight of cucumber were inhibited at all the concentrations.The plant height and the fresh weight of radish and tomato were inhibited at 90 g/L,and stimulated at 10 g/L and 50 g/L.The water extract had significant inhibiting effects at all the concentrations on the roots of cucumber and radish.The roots of tomato were stimulated at 10 g/L and inhibited at 50 and 90 g/L.It was suggested that Lagenaria siceraria var.hispida might be intercropped with tomato and radish,but should be avoided to intercrop with cucumber.
国家科技期刊平台
NSTL
万方数据
维普
