唑胺菌酯对黄瓜和番茄生理指标及保护酶活性的影响

Effects of pyrametostrobin on physiological indices and protective enzymes in cucumber and tomato

采用室内盆栽试验,系统地研究了杀菌剂唑胺菌酯(SYP-4155)对黄瓜和番茄生长发育过程中生理指标及保护酶活性的影响。结果表明,与空白对照相比,唑胺菌酯明显提高了黄瓜和番茄叶片中叶绿素含量,且浓度为300mg/L时影响最大,在一定范围内,叶绿素含量与该药剂的浓度呈正相关,可溶性糖含量和蛋白质含量则变化不大;施用不同浓度的唑胺菌酯后,叶片中保护酶(过氧化物酶POD、多酚氧化酶PPO、过氧化氢酶CAT、超氧化物歧化酶SOD)的活性在一定时间内均比对照高,浓度为300mg/L时黄瓜中4种酶的活性分别较对照高34.67%、34.78%、36.36%和11.94%,且浓度越高,酶活性的变化越大。

The effects of pyrametostrobin on physiological indices and protective enzymes in cucumber and tomato were studied with pot tests in greenhouse. The results showed that the content of chlorophyll in cucumber and tomato leaves were promoted by pyrametostrobin significantly to the control, the effect with 300 mg/L was fastest and most significant. To a certain extent, the bigger the concentration of pyrametostrobin, the higher the content of chlorophyll, while the effects on the soluble sugar and protein were not significant. The activities of protective enzymes under the treatment of pyrametostrobin with different concentrations were all increased in certain time. The activities of POD, PPO, CAT and SOD with 300 mg/L were 34.67%, 34.78%, 36.36% and 11.94% higher than the control, respectively. The chan- ges were larger and more significant with higher concentration of pyrametostrobin.