A Preliminary Study on the Phytotoxicity of 38 Plant Species

The phytotoxicity of 38 plant species belonging to 21 families, 34 genus were determined by the seeds germination of Sorghum vulgare , Cucumis sativus, Triticum aestivum and Brassica campestris. The results showed that inhibitory rates of 32 plant species were more than 70% at least to one species of crop seeds. The inhibitory rates of Rheum palmatum, Malva neglecta, M. verticillata and Ricinus communis against young roots of the 4 species of crop seeds were more than 70%. The inhibitory rates of Phytolacca acinosa not only against young roots, but also against young buds of the 4 species of crop seeds were more than 80%.