莠去津胁迫下外源谷胱甘肽对黄瓜幼苗生长发育的影响  

Effects of Exogenous Glutathione on Growth and Development of Cucumber Seedlings under Atrazine Stress

作　　者：张露文 宋述尧[1] 陈姗姗[1] 苏丽影[1] 孙凯[1] 苏雪娇 ZHANG Luwen;SONG Shuyao;CHEN Shanshan;SU Liying;SUN Kai;SU Xuejiao(College of Horticulture,Jilin Agricultural University,Changchun 130118,China)

机构地区：[1]吉林农业大学园艺学院,长春130118

出　　处：《吉林农业大学学报》2023年第3期279-284,共6页Journal of Jilin Agricultural University

基　　金：吉林省现代农业产业技术体系建设专项(2013026)。

摘　　要：为探讨外源谷胱甘肽(GSH)对土壤莠去津胁迫下黄瓜幼苗生长发育和生理方面的影响,设置不同质量浓度(0,50,100,200 mg/L)的外源GSH处理,模拟莠去津在土壤中残留量为0.20 mg/kg,进行黄瓜育苗试验。结果表明:在土壤莠去津胁迫下,100,200 mg/L外源GSH处理对黄瓜幼苗的单株鲜质量影响显著,100 mg/L处理后的幼苗叶面积比对照显著增大;100,200 mg/L外源GSH使黄瓜幼苗的超氧化物歧化酶(SOD)、过氧化物酶(POD)活性、叶绿素含量、叶片净光合速率、GSH含量、谷胱甘肽还原酶(GR)活性、谷胱甘肽-S-转移酶(GSTs)活性显著升高,丙二醛(MDA)含量显著下降;100 mg/L外源GSH处理对幼苗的影响最显著,可减轻莠去津对黄瓜幼苗的药害。In order to investigate the effects of exogenous glutathione(GSH)on the growth and physiology of cucumber seedlings under soil atrazine stress,this experiment set up exogenous GSH treatment with different concentrations(0,50,100,200 mg/L),simulated the residual concentration of atrazine in soil(0.20 mg/kg),and conducted cucumber seedling experiments.The results showed that under soil atrazine stress,100,200 mg/L exogenous GSH treatment had a significant effect on the fresh weight of cucumber seedlings.The leaf area of seedlings treated with 100 mg/L was significantly increased compared with the control.At the same time,100,200 mg/L exogenous GSH significantly increased sod superoxide dismutase(SOD)and peroxidase(POD)enzyme activities,chlorophyll content,leaf net photosynthetic rate and GSH content,glutathione reductase(GR)activity,and glutathione-s-transferase(GSTs)activity,while MDA content significantly decreased.Among them,100 mg/L exogenous GSH treatment had the most significant effect on seedlings,which reduced the toxicity of atrazine to cucumber seedlings.

关 键 词：莠去津 谷胱甘肽 黄瓜 生长发育 生理指标 

分 类 号：S642.2[农业科学—蔬菜学]