山东农业科学
山東農業科學
산동농업과학
SHANGDONG AGRICULTURAL SCIENCES
2014年
8期
61-65
,共5页
苏涛%司美茹%王仁君%唐美珍
囌濤%司美茹%王仁君%唐美珍
소도%사미여%왕인군%당미진
酸雨%重金属%绞股蓝%抗性生理指标
痠雨%重金屬%絞股藍%抗性生理指標
산우%중금속%교고람%항성생리지표
Acid rain%Heavy metal%Gynostemma pentaphyllum%Physiological indexes of resistance
通过盆栽试验,研究了不同pH值的酸雨与Zn(30、400 mg/kg)、Cd(1、15 mg/kg)单独或复合胁迫对绞股蓝抗性生理指标的影响。结果表明:随着酸雨酸度和重金属( Zn或Cd)浓度的增加,绞股蓝叶片中丙二醛(MDA)含量和过氧化物酶(POD)活性上升,超氧化物歧化酶(SOD)活性先升高后下降,过氧化氢酶( CAT)活性随着酸雨酸度的增加而降低,随重金属( Zn或Cd)浓度的增加先升高后下降;高酸度的酸雨与高浓度的Zn-Cd复合胁迫对绞股蓝各抗性生理指标的效应大于这3种污染物的单因素效应,表现出明显的协同效应;不管酸雨酸度强弱,低浓度的Zn-Cd复合胁迫对绞股蓝各抗性生理指标的效应小于Zn、Cd单因素效应,表现出明显的拮抗效应。
通過盆栽試驗,研究瞭不同pH值的痠雨與Zn(30、400 mg/kg)、Cd(1、15 mg/kg)單獨或複閤脅迫對絞股藍抗性生理指標的影響。結果錶明:隨著痠雨痠度和重金屬( Zn或Cd)濃度的增加,絞股藍葉片中丙二醛(MDA)含量和過氧化物酶(POD)活性上升,超氧化物歧化酶(SOD)活性先升高後下降,過氧化氫酶( CAT)活性隨著痠雨痠度的增加而降低,隨重金屬( Zn或Cd)濃度的增加先升高後下降;高痠度的痠雨與高濃度的Zn-Cd複閤脅迫對絞股藍各抗性生理指標的效應大于這3種汙染物的單因素效應,錶現齣明顯的協同效應;不管痠雨痠度彊弱,低濃度的Zn-Cd複閤脅迫對絞股藍各抗性生理指標的效應小于Zn、Cd單因素效應,錶現齣明顯的拮抗效應。
통과분재시험,연구료불동pH치적산우여Zn(30、400 mg/kg)、Cd(1、15 mg/kg)단독혹복합협박대교고람항성생리지표적영향。결과표명:수착산우산도화중금속( Zn혹Cd)농도적증가,교고람협편중병이철(MDA)함량화과양화물매(POD)활성상승,초양화물기화매(SOD)활성선승고후하강,과양화경매( CAT)활성수착산우산도적증가이강저,수중금속( Zn혹Cd)농도적증가선승고후하강;고산도적산우여고농도적Zn-Cd복합협박대교고람각항성생리지표적효응대우저3충오염물적단인소효응,표현출명현적협동효응;불관산우산도강약,저농도적Zn-Cd복합협박대교고람각항성생리지표적효응소우Zn、Cd단인소효응,표현출명현적길항효응。
A pot experiment was conducted to study the effects of single or combined stress of Zn (30, 400 mg/kg), Cd (1, 15 mg/kg) and acid rain varying in pH value on physiological indexes of resistance of Gynostemma pentaphyllum.The results showed that with the increase of acidity of acid rain and concentration of metal ( Zn or Cd) , the malondialdehyde ( MDA) content and peroxidase ( POD) activity in leaves of Gynos-temma pentaphyllum increased , and the superoxide dismutase ( SOD ) activity increased firstly and then de-creased .The catalase ( CAT) activity decreased with the increase of acidity of acid rain , but increased firstly and then decreased with the increase of heavy metal ( Zn or Cd ) concentration .The combined stress effect of high-acidity acid rain and high -concentration Zn-Cd on physiological indexes of resistance of Gynostemma pentaphyllum was greater than their single factor effect , which showed obvious synergistic effect .Regardless of the acigity of acid rain , the combined stress effects of low concentrations of Zn -Cd on physiological indexes of Gynostemma pentaphyllum was less than their single effect , so it showed obvious antagonistic effect .