常见抗生素对作物种子萌发和幼苗生长的影响
毕业论文关键词：玉米、小麦种子；发芽率；叶绿素含量；抗生素。
Effects of Different Antibiotic on the Seed Germination and the Seedling Growth of Corn and Wheat
Abstract: In recent years, because of the abuse of antibiotics, antibiotics pollution in the natural environment becomes worse and it should have effects on the plant growth. Through the determination of germination rate, root length, bud length, shoot length, seedling dry weight and chlorophyll content of the crops, an experiment was carried out to explore the effects of different concentrations of antibiotics (25 mg/L, 50 mg/L, 100 mg/L, 200 mg/L, the control of 0 mg/L) on the seed germination and seedling growth of different species corn (zhengdan 958, nongda 108)and wheat (Yannong 19, Jimai 22). The results showed that the four kinds of antibiotics had no significant effect on wheat seed germination, but obviously promoted the maize seed germination; Levofloxacin hydrochloride significantly inhibited the growth of seedling roots and shoots of wheat (Yannong 19 and jimai 22) and blocked the synthesis of chlorophyll; Penicillin sodium promoted the growth of seedling roots and shoots of wheat (Yannong 19), which was positively correlated with the concentration of antibiotic treatment, but inhabited the the growth of roots and shoots of Jimai 22; With the increase of concentration of azithromycin treatment, young leaf chlorophyll content of Jimai 22 gradually reduced; Levofloxacin hydrochloride significantly inhibited the growth of zheng 928 , especially on root growth; The chlorophyll content of Zhengdan 958 treated with Levofloxacin hydrochloride and Nongda 108 treated with cefazolin sodium significantly decreased compared with the control, and the 200 mg/L levofloxacin hydrochloride completely blocked the synthesis of chlorophyll of Nongda 108; The effects of antibiotics on the fresh weight and dry weight of wheat and corn were different.
Key words: Corn, wheat seed; Germination rate; Chlorophyll content; Antibiotic concentrations.
目录
引言： 1
1 材料与方法 2
1.1实验材料 2
1.1.1仪器和用品 2
1.2 实验方法 2
下一篇：蛋白质互作在细胞信号传导中的作用