油茶移栽苗失水程度对生理生化特性的影响  

Effects of dehydration degree on the physiological and chemical characteristics of Camellia oleifera seedlings

作　　者：曹志华[1] 张四七[1] 刘春[1] 胡娟娟[1] 张鑫 束庆龙[1] 

机构地区：[1]安徽农业大学林学与园林学院,合肥230036 [2]安徽省林业职业技术学院,合肥230036

出　　处：《安徽农业大学学报》2011年第3期444-447,共4页Journal of Anhui Agricultural University

基　　金：安徽省教育厅省级重点(KJ2008A081);安徽省科技攻关(09010301080);安徽省油茶良种工程技术研究中心共同资助

摘　　要：对油茶苗木失水程度与酶活性(多酚氧化酶、过氧化物酶、过氧化氢酶)、丙二醛含量、电导率等生理生化特性以及栽植成活率的关系进行了研究。结果表明,在失水量分别为10%、20%、30%和40%时,多酚氧化酶活性分别为0.654、0.734、0.612和0.513 U.min-1.g-1;过氧化物酶活性分别为13.635、16.514、12.511和9.021 U.min-1.g-1;过氧化氢酶活性分别为3.153、4.021、3.011和1.412 U.min-1.g-1;丙二醛含量分别为45.28、50.98、61.42和73.72μmol.g-1;相对电导率分别为34.88%、38.07%、48.90%和50.45%;且造林成活率分别为91.1%、80.0%、6.7%和0%。今后在油茶栽植过程中,一定要注意苗木的保鲜措施,使失水程度控制在20%以内。Relationship between the dehydration degree of Camellia oleifera seedlings and the enzyme ac-tivities of polyphenoloxidase（PPO）,peroxidase（POD）,catalase（CAT）,and other characteristics such as the content of MDA,the relative conductivity and planting survival rate were studied in this paper.The results showed that when the oil-tea seedlings dehydrated by 10%,20%,30% and 40%,the activity of PPO were respectively 0.654,0.734,0.612 and 0.513 U·min-1·g-1;the activity of POD were respectively 13.635,16.514,12.511 and 9.021 U·min-1·g-1;the activity of CAT were respectively 3.153,4.021,3.011 and 1.412 U·min-1·g-1;the content of MDA were respectively 45.28,50.98,61.42 and 73.72 μmol·g-1;the relative conductivity were respectively 34.88%,38.07%,48.90% and 50.45%;the planting survival rates were respectively 91.1%,80.0%,6.7% and 0%.The seedlings should be kept fresh and the dehydration degree maintains within 20% in the planting process

关 键 词：油茶 失水程度 酶活性 丙二醛含量 电导率 栽植成活率 

分 类 号：S794.4[农业科学—林木遗传育种]