Effect of Drought Stress on Anatomical Structure of Columbine Root and Physiological Characteristics
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2018年17
- Page:
- 82-89
- Research Field:
- Publishing date:
Info
- Title:
- Effect of Drought Stress on Anatomical Structure of Columbine Root and Physiological Characteristics
- Author(s):
- YANG Yang; XIONG Yuanbing; HAO Xiaoyong
- (College of Life Science,Lyuliang University,Lyuliang,Shanxi 033000)
- Keywords:
- drought stress; columbine; root; anatomical structure; physiological characteristics
- PACS:
- -
- DOI:
- 10.11937/bfyy.20174368
- Abstract:
- The effects of drought stress on the anatomical structure and physiological indexes of the columbine root were studied with the method of conventional paraffin section.Experiment with columbines as experimental material,using paraffin section and microscopic observation of 0(CK),10%,20%,30%,40% PEG concentration roots under drought stress in 0 day,3 days,6 days,9 days,12 days of root number,root length,root cap ratio,V/R ratio,and the change of physiological and biochemical indexes such as soluble sugar,soluble protein and malondialdehyde,so as to analyze the drought resistance mechanism of columbine from the cytological and biochemical levels.The results showed that drought stress had no significant effect on the number of fibrous root of columbine,root length increased significantly,root length increased from 20.94 cm to 25.60 cm under 40% PEG drought stress at 12 days.The root cap ratio increased significantly after stress at 3 d,R/C from 0.846 to 1.952 under 40% PEG drought stress at 12 days;V/R increased significantly with the increase of PEG concentration,V/R increased to 0.483 from 0.337 under PEG drought stress at 6 days.There were no significant effect on V/R under PEG stress at 12 days and PEG concentration,but all V/R were higher than CK 0.359.Under drought stress,the content of malondialdehyde and the content of free proline in the plants of columbine were on the rise,and the change of soluble protein was not significant.The change trend of soluble sugar content was first descended and then increased,and the content of soluble sugar was lower than CK.
Last Update: 2018-09-30