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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。
The relationship between dehydration degree and enzyme activity (polyphenol oxidase, peroxidase, catalase), malondialdehyde content, conductivity and other physiological and biochemical characteristics and survival rate were studied. The results showed that the activities of polyphenol oxidase were 0.654, 0.734, 0.612 and 0.513 U.min-1.g-1 respectively when the water loss was 10%, 20%, 30% and 40%, respectively. The activity of peroxidase Respectively, and the activities of catalase were 3.153, 4.021, 3.011 and 1.412 U.min-1.g-1 respectively; the contents of malondialdehyde were 45.28 , 50.98, 61.42 and 73.72μmol.g-1, respectively. The relative conductivity was 34.88%, 38.07%, 48.90% and 50.45% respectively. The afforestation survival rates were 91.1%, 80.0%, 6.7% and 0%, respectively. In the future during the cultivation of Camellia, we must pay attention to the preservation of seedlings measures to control the extent of water loss within 20%.