[1]李建民,王进鑫,赵广贤.谐变供水条件下元宝枫幼树叶片中SOD活性的变化[J].西北林学院学报,2006,21(06):24.
　LI jianmin+,WANG Jinxin+,ZHAO Guangxian.The Change of SOD on Periodic Change Water Supply in Different Growth Stages during Annual Growth Period for Acer truncatum Youngling[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2006,21(06):24.
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谐变供水条件下元宝枫幼树叶片中SOD活性的变化()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第21卷
期数:
2006年06期
页码:
24
栏目:
林业基础科学
出版日期:
2006-12-30

文章信息/Info

Title:
The Change of SOD on Periodic Change Water Supply in Different Growth Stages during Annual Growth Period for Acer truncatum Youngling
作者:
李建民1; 王进鑫1;  赵广贤2
1.西北农林科技大学 资源环境学院，陕西 杨陵　712100;2.陕西省龙草坪林业局，陕西 武功 712200
Author(s):
LI jianmin+1;  WANG Jinxin+1;  ZHAO Guangxian2
1.College of Resources and Environment, Northwest A  F University, Yangling, Shaanxi 712100,China;=2.Shaanxi Longcaoping Forestry Bureau,Wugong,Shaanxi 712200,China
关键词:
元宝枫; 年生长阶段; 供水方式; SOD
Keywords:
Acer truncatum; annual growth stages; process of water supply;  SOD
分类号:
S792.350.1
文献标志码:
A
摘要:
通过旱棚人工控水，以元宝枫的生长阶段作为因素，采用三元二次通用旋转组合设计，对元宝枫不同生长阶段下供水量与供水方式对叶片中超氧化物歧化酶(SOD)活性的影响进行了研究。结果表明,均恒供水条件下，当土壤相对含水率低于87.84%时，SOD酶活性随土壤含水量的增大而增大。 当土壤相对含水率超过87.84%时，生长前期SOD酶活性随含水量的增高而增大，在生长盛期和生长后期则随土壤含水量的增高而降低。元宝枫生长期中, SOD酶活性在生长盛期有所升高，在生长后期酶活性有所下降。谐变供水条件下，幼树叶片中超氧化物歧化酶活性随年均土壤供水能力和幼树各生长阶段供水模式的不同而变化。在单一阶段土壤相对含水率不超过87.84%时，幼树SOD酶活性随生长前期和生长后期随供水量的增大而增大；在单一阶段土壤相对含水率超过87.84%时, 幼树叶片中SOD活性在中前期—生长前期和生长盛期随供水量的增加而增大。在土壤供水能力基本相同时，不同生长阶段供水量的分配对元宝枫幼树SOD活性有较大影响。综合分析表明，生长前期供水与SOD活性呈正相关，生长后期和生长中期供水量与SOD活性呈负相关。
Abstract:
Using the artificial water control technique in the shed of freerain and periodically changing water supply at different growth stages during annual growth period, we examined the SOD activity in leaves of %Acer truncatum% youngling to water stress .The results showed that the SOD activity was affected by the average amount and procedure of water supply at different growth stages over the annual growth period. The SOD activity of %A. truncatum% youngling increased with increasing water supply at the early growth stage and the late growth stage when the relative soil moisture was no more than 87.84% at any growth stage. When the relative soil moisture was more than 87.84% at any single growth stage, the SOD activity of %A. truncatum% youngling increased with increasing water supply at the early growth stage and fast growing stage .The apportionment of water supply among growth stages had a big impact on the SOD activity, showing the highest sensitivity of A. truncatum to soil water stress at the early growth stage.

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备注/Memo

备注/Memo:
收稿日期：20060605修回日期：20060701基金项目：国家自然科学基金项目（30371151)；教育部留学回国人员科研启动基金资助项目资助作者简介：李建民（1981), 男,河南辉县人，硕士研究生, 研究方向为生态环境工程 *通讯作者：王进鑫，男，教授，主要从事旱区人工林生态系统水分运移调控与生物节水理论研究。 Email: jxinw03@hotmail.com
更新日期/Last Update: 2010-05-04