常见抗生素对草坪植物种子萌发和幼苗生长的影响
毕业论文关键词：化感作用；发芽率；根长、芽长；抗生素
Effects of Common antibiotics on the Seed Germination and seedling growth of 3 Species Turf Grass
Abstract: The pollution of antibiotics has become a international hot spots of study because of the overuse of antibiotics. China is one of the countries which have the most serious question about the abuse of antibiotics. Antibiotics has an impact of the growth of livings. To learn the effects of antibiotics on plant growth, an experiment was carried out to explore the effects of different concentrations (25 mg/L, 50 mg/L, 100 mg/L, 200 mg/L, the control of 0 mg/L)of antibiotics (levofloxacin sodium chloride, sodium penicillin, azithromycin, cefazolin sodium) on the seed germination and seedling growth of three turf seeds including tall fescue, Horseshoe, clover. The results showed that: the lower concentration of levofloxacin (≤100mg / L) inhabited the seed germination of tall fescue while high concentrations (200mg / L) significantly promoted seed germination and the root and shoot growth of tall fescue were obviously inhibited and appeared albino. The seed germination of tall fescue treated with azithromycin was promoted with low concentration and inhabited with high concentration, seedling root length and shoot length of tall fescue were obviously inhibited with the treatment of
sodium penicillin, azithromycin and cefazolin sodium.The seed germination of Horseshoe Gold and clover were promoted with low concentration and inhabited with high concentration treated with sodium penicillin, azithromycin and cefazolin sodium. Four antibiotic had little effect on Clover root length, but increased the root lengths of gold horseshoe. The shoot length of Clove was reduced by high concentration (200mg / L) of sodium chloride levofloxacin, azithromycin and cefazolin sodium. The shoot length of Horseshoe gold was reduced by high concentration of sodium chloride levofloxacin and azithromycin ,cefazolin sodium treatment had little effect on the shoot length of Horseshoe gold.
Key words: allelopathy; germination rate; root length, shoot length; antibiotic