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Paper Information

Journal:   IRANIAN JOURNAL OF RANGELANDS AND FORESTS PLANT BREEDING AND GENETIC RESEARCH   SPRING 2007 , Volume 15 , Number 1 (27); Page(s) 51 To 62.
 
Paper: 

EFFECT OF WATER STRESS ON LEAF WATER POTENTIAL OF SOME TREES AND SHRUBS

 
 
Author(s):  SHABAN M.*, KHAJEH ALDIN S.J.A.D., KARIMZADEH H.R.
 
* NATURAL RESOURCES DEPARTMENT OF ISFAHAN UNIVERSITY OF TECHNOLOGY
 
Abstract: 

This research was carried out to select the drought tolerance species according to their leaf water potential (LWP) under water stress in arid and semi-arid regions during 2004 and 2005. This study was conducted using factorial experiment based on complete randomized design with 5 replications. Farm of Natural Resources Department of IUT, Isfahan, Iran. 40, 60, 80, 100 and 120 % of potential evaporation from a class A potential evaporation pan; in 19 tree and shrub species were applied. The results showed significant differences between the plant species, the irrigation regimes two years and soil and species interaction for the LWP amount. Regression analysis between the amount of irrigation water and LWP amount showed that the increase in amount of irrigation water led to increase in LWP. Among the trees and shrubs species Quercus infectoria had the least LWP (-3.94Mp) and Salix alba had the maximum LWP amount (-2.36Mp) compared to other species. According to our studies Quercus infectoria, Olea europea, Fraxinus rotundifolia and Cersis siliquestrum species were recognized as the most drought tolerant species and Platanus orientalis, Salix alba, Populus nigra and Populus alba species showed to be the most sensitive species to drought.

 
Keyword(s): TREES, SHRUBS, WATER STRESS AND LWP
 
References: 
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