[1]魏媛,喻理飞.一年生构树幼苗对水分胁迫的生理响应[J].西北林学院学报,2010,25(04):40-44.
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一年生构树幼苗对水分胁迫的生理响应
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第25卷
期数:
2010年04期
页码:
40-44
栏目:
OA
出版日期:
2010-07-31

文章信息/Info

作者:
魏媛;喻理飞;
贵州财经学院资源与环境管理学院;贵州大学林学院;
关键词:
构树幼苗水分胁迫生理抗旱生态适应性
摘要:
采用人工模拟水分胁迫方法,对喀斯特地区1 a生构树苗木的生态耐旱适应性进行了研究。结果表明:随着水分胁迫加剧,构树幼苗叶质膜相对透性上升、丙二醛含量、游离脯氨酸含量增加;叶绿素含量、硝酸还原酶活性、根系活力下降;过氧化物酶活性呈"先上升后下降"的趋势。实验结果表明构树在一定的水分胁迫下能够主动调整其生理代谢,通过合成有机溶质以提高适应能力而忍受逆境,揭示喀斯特森林树种构树具有的一定生态耐旱生产潜力,对水分亏缺的适应能力也较强,可作为退化喀斯特石漠化地区造林的先锋树种。

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备注/Memo

备注/Memo:
国家“十一五”科技支撑计划项目(2006BAC01A09);国家“十一五”科技支撑计划项目(2006BAD03A1006);
更新日期/Last Update: 2010-08-20