CAJ | 학술논문

采用盆栽方法，对吊竹梅用pH 值为6．7（对照）、5．6、4．5、3．5、2．5、1．5的模拟酸雨进行喷雾处理，测定其生物量、花青素相对浓度、叶绿素含量、硝酸还原酶活性（nitrate reductase，NR）、脯氨酸含量、超氧化物歧化酶（super-oxide dismutase，SOD）活性、过氧化物酶（peroxidase，POD）活性、过氧化氢酶（catalase，CAT）活性、丙二醛（ma-londialdehyde，MDA）含量和质膜透性等指标。结果显示，吊竹梅单株干质量、叶绿素含量、NR 活性、花青素相对浓度、CAT活性均呈下降趋势；SOD活性呈先上升后下降趋势；脯氨酸含量、POD活性、MDA 含量和质膜透性均呈上升趋势。综合分析表明，模拟酸雨pH 值为5．6～3．5处理，吊竹梅生长和抗氧化能力受影响较小，而观赏性不受影响；模拟酸雨pH 值为2．5处理，其生长受抑制程度和抗氧化能力下降幅度增大，对其观赏性几乎无影响；模拟酸雨pH 值为1．5处理，其生长和抗氧化能力严重受抑制，有明显伤害症状，观赏性急剧下降。
채용분재방법，대조죽매용pH 치위6．7（대조）、5．6、4．5、3．5、2．5、1．5적모의산우진행분무처리，측정기생물량、화청소상대농도、협록소함량、초산환원매활성（nitrate reductase，NR）、포안산함량、초양화물기화매（super-oxide dismutase，SOD）활성、과양화물매（peroxidase，POD）활성、과양화경매（catalase，CAT）활성、병이철（ma-londialdehyde，MDA）함량화질막투성등지표。결과현시，조죽매단주간질량、협록소함량、NR 활성、화청소상대농도、CAT활성균정하강추세；SOD활성정선상승후하강추세；포안산함량、POD활성、MDA 함량화질막투성균정상승추세。종합분석표명，모의산우pH 치위5．6～3．5처리，조죽매생장화항양화능력수영향교소，이관상성불수영향；모의산우pH 치위2．5처리，기생장수억제정도화항양화능력하강폭도증대，대기관상성궤호무영향；모의산우pH 치위1．5처리，기생장화항양화능력엄중수억제，유명현상해증상，관상성급극하강。
Zebrinapendulaplants were sprayed with simulated acid rain at different pH values (6.7,5.6,4.5, 3.5,2.5,1.5)in pot experiments,and the biomass,relative anthocyanin concentration,chlorophyll content, nitrate reductase activity,proline content,antioxidase activity (including superoxide dismutase,peroxidase and catalase),malondialdehyde content,and membrane permeability were determined.With decreased pH value from simulated acid rain,the dry weight,relative anthocyanin concentration,chlorophyll content,nitrate re-ductase activity and CAT activity decreased.SOD activity showed a trend of initial increase and then decrease. Proline content,POD activity,MDA content and membrane permeability increased with decreasing pH value. An integrated analysis indicated that under simulated acid rain-induced pH values 5 .6-3 .5 ,the growth and antioxidant activity of Z.pendulawas only slightly inhibited and there was no effect on ornamental quality;under a simulated acid rain-induced pH value 2 .5 ,the inhibition effect on growth and antioxidant activity be-came heavier and there was a slight effect on ornamental quality;under simulated acid rain-induced stress of pH value 1.5,the inhibition effect was large and there were visible injury symptoms on leaves,with a sharp decline in ornamental quality.