珍稀濒危植物珙桐过氧化物酶活性和丙二醛含量

生态学杂志

珍稀濒危植物珙桐过氧化物酶活性和丙二醛含量

朱利君^1,2;苏智先¹;胡进耀¹;苏瑞军¹

¹绵阳师范学院生态研究中心，四川绵阳 621000; ²西华师范大学四川省环境科学与生物多样性重点实验室，四川南充 637002

收稿日期:2008-06-17 修回日期:1900-01-01 出版日期:2009-03-10 发布日期:2009-03-10

Peroxidase activity and MDA content of endangered species Davidia involucrata.

ZHU Li-jun^1，2;SU Zhi-xian¹;HU Jing-yao¹;SU Rui-jun¹

¹Research Centre of Ecology, Mianyang Normal University, Mianyang 621000, Sichuan, China;²Sichuan Provincial Key Laboratory of Environmental Science and Biodiversity Conservation, China West Normal University, Nanchong 637002, Sichuan, China

Received:2008-06-17 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10

摘要/Abstract

摘要： 采用比色法测定了不同年龄级、部位和叶位珙桐叶的过氧化物酶(POD)活性和丙二醛（MDA）含量，以探讨珙桐的生理生态适应性。结果表明：不同年龄级同一生长时期珙桐叶的POD活性和MDA含量不同，同年龄级同层的POD活性随叶位增大先升后降，MDA含量随叶位增大逐渐升高;同叶位不同层及同层不同叶位的珙桐叶的POD活性和MDA含量不同。珙桐叶POD活性和MDA含量对生长期敏感，同年龄级同叶位的珙桐叶随叶片的生长、衰老，POD活性和MDA含量逐渐升高，即珙桐叶POD活性和MDA含量受生物和非生物因子影响显著，且不同年龄级、叶位、层次存在差异。

关键词: 人工林, 蓄积量, 辽西

Abstract: To understand the eco-physiological adaptability of Davidia involucrata, th e peroxidase (POD) activity and MDA content of D. involucrata leaves of dif ferent age class and at different leaf layer and leaf position were analyzed by the method of colorimetry. The results showed that the D. involucrata leaves of different age class but at the same growth phase had different POD activity and MDA content. With increasing leaf position, the POD activity of the leaves o f same age class and at the same leaf layer had a decrease after an initial incr ease, while the MDA content was increasing. The POD activity and MDA content of the leaves at same leaf position but at different leaf layer and those at differ ent leaf position but at same leaf layer also varied. Growth phase had greater e ffects on the leaf POD activity and MDA content. With the growth and senescence of leaf, the POD activity and MDA content of the leaves of same age class and at same leaf position increased gradually. The POD activity and MDA content of D . involucrata leaves were affected by both biological and non-biological fact ors, and varied with leaf age class, leaf position, and leaf layer.

Key words: Plantation, Forest stock, Western Liaoning area

朱利君;苏智先;胡进耀;苏瑞军. 珍稀濒危植物珙桐过氧化物酶活性和丙二醛含量[J]. 生态学杂志.

ZHU Li-jun^1，2;SU Zhi-xian¹;HU Jing-yao¹;SU Rui-jun¹ . Peroxidase activity and MDA content of endangered species Davidia involucrata. [J]. cje.

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