南京林业大学学报(自然科学版) ›› 1998, Vol. 22 ›› Issue (02): 14-18.doi: 10.3969/j.jssn.1000-2006.1998.02.004

• 研究论文 • 上一篇    下一篇

淹水胁迫对杨树生物量及生理性状影响的比较

唐罗忠;徐锡增;程淑婉   

  1. 南京林业大学森林资源与环境学院
  • 出版日期:1998-06-18 发布日期:1998-04-18

EFFECTS OF FLOODING STRESSES ON BIOMASS AND PHYSIOLOGICAL PROPERTIES OF POPLAR CLONES

Tang Luozhong Xu Xizeng Cheng Shuwan   

  1. College of Forest Resources and Environment Nanjing Forestry University Nanjing 210037
  • Online:1998-06-18 Published:1998-04-18

摘要: <正>选择3种不同类型的杨树无性系(I-69、NL-80105、NL-80351),在人为控制条件下进行不同程度的淹水胁迫试验,结果表明:在胁迫条件下3种杨树无性系生物量累积受到明显抑制,冠根比降低,叶片硝酸还原酶(NR)活性显著下降,叶片相对质膜透性(RPP)明显升高,叶绿素含量以及叶片含水量(RWC)降低,无性系之间的各性状表现有所差异,与对照相比,在强淹水胁迫中I-69杨表现最好,其次是105杨,而351杨最差;在弱淹水胁迫中,351杨表现最佳,I-69杨和105杨相差无几。统计分析显示,NR活性和RPP两个指标与生物量之间存在显著相关关系

Abstract: Based on the research of the seedlings (I-69,NL-80105,NL-80351)under the flooding stress and the waterlogging stress,results showed that, (1)flooding and waterlogging stresses seriously inhibited the growth in biomass of all three poplar clones, and the rate of the biomass would decrease with the lasting course of the stress, which were in the order of treatment A