(54.163.20.123)
Users online: 1317    [ij] [ij] [ij] 
Email id
 

Vegetos- An International Journal of Plant Research
Year : 2017, Volume : 30, Issue : 2
First page : ( 73) Last page : ( 80)
Print ISSN : 0970-4078. Online ISSN : 2229-4473.
Article DOI : 10.5958/2229-4473.2017.00141.0

Transpiration of Woody Plants in the Desert Zone of Mangistau

Belozerov IF*, Imanbayeva AA

RSE Mangyshlak Experimental Botanical Garden of SC MES RK, Aktau, Kazakhstan

*Corresponding author: Belozerov IF, RSE “Mangyshlak Experimental Botanical Garden ”of SC MES RK, Aktau, Kazakhstan, E-mail: scholar3365@gmail.com

Online published on 14 October, 2017.

Abstract

Objective

The present research on the transpiration flow conducted in the arid conditions of Mangistau allowed three groups of introduced species to be distinguished: low transpiration (3 types of trees); average transpiration (7 types of trees and shrubs) and high transpiration (3 types of trees).

Methods

The research subjects included 22 introduced species of trees and shrubs of the different geographical origin, degree of biological resistance and growth forms, among them 4 conifers, 15 deciduous trees, and 3 fruit trees. The following methods were applied in the physiological research: the total water content and the transpiration rate. The selection of leaves was made in the middle part of the crown in the 5-10-fold repetition.

Results

According to the correlation analysis, a close relationship has been set between the transpiration rate and the water content of leaves. Soil moisture determines from 11.6% to 43.6% of the transpiration rate variation. Reliable at the 5% significance level is the ratio of correlation with the relative moisture and the air temperature. The conjugation with the value of illumination is statistically unreliable. Seasonal dynamics in the majority of introduced species is seen as a unimodal curve with a peak value in June. Three types have been determined for the daily transpiration rhythm: "rising", "falling" and "variable".

Conclusion

The intensity of the transpiration process, due to its considerable variability and multifactor nature, cannot be referred to the resistance criteria of woody plants, but at the same time, there is a noticeable connection between the biological stability of introduced species and the coefficient of transpiration variation. With the increase of its values, the resistance of introduced species to the arid habitat conditions is generally enhanced due to their increased ability to the self-regulation of water exchange.

Top

Keywords

Woody plants, Transpiration rate, Correlation, Water content, Regression.

Top

  
║ Site map ║ Privacy Policy ║ Copyright ║ Terms & Conditions ║ Page Rank Tool
368,897,759 visitor(s) since 30th May, 2005.
All rights reserved. Site designed and maintained by DIVA ENTERPRISES PVT. LTD..
Note: Please use Internet Explorer (6.0 or above). Some functionalities may not work in other browsers.