| 【Objective】With Peganum nigellastrum as the donor, this study used plant allelopathic principle to explore the inhibitory effect of different concentrations of Solanum rostratum extract on seed germination, in order to provide new idea and theoretical reference for biological control of S. rostratum. 【Methods】 Different concentrations (5, 10, 20, 30, 40, and 50 g/L) of aqueous extracts of P. nigellastrum were prepared using an indoor petri dish method, and seed germination experiments were carried out with S. rostratum as the receptor. 【Results】 (1) When the extract was 30 g/L, the germination rate, germination potential, germination index, and vigor index of S. rostratum seeds were zero. (2) When the extract was 30 g/L, the comprehensive allelopathic effect index of seed germination of S. rostratum was -1.00. (3) When the extract was 30 g/L, the inhibition rate of radicle and germ of S. rostratum was 100%. The comprehensive allelopathic effect index of radicle and germ was -1.00. 【Conclusion】 When the P. nigellastrum extract was 30 g/L, it had the best inhibitory effect on seed germination and the growth of radicle and germ during germination. |