Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
International Journal of Agricultural Research
  Year: 2007 | Volume: 2 | Issue: 2 | Page No.: 159-164
DOI: 10.3923/ijar.2007.159.164
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail
Physiological Mechanisms of Water Use Efficiency in Grape Rootstocks under Drought Conditions
J. Satisha , G.S. Prakash , R.M. Bhatt and P. Sampath Kumar

Abstract:
Five grape rootstocks namely Dogridge, Salt Creek, 1613 C, St. George and VC clone were subjected to different levels of moisture stress to study their physiological responses. Control, 50% stress and 100% stress were imposed for 14 days by withholding the irrigation. Observations on relative water content, water potential, osmotic potential, specific leaf weight and gas exchange parameters like photosynthesis rate, transpiration rate, stomatal conductance and water use efficiency were recorded. All the five rootstocks wilted before completion of stress cycle at 100% stress. Dogridge and Salt Creek performed better at 50% moisture stress through maintenance of leaf turgidity as indicated by higher RWC and water potential attributing to better osmotic adjustment. The marginal reduction in photosynthesis and greater reduction in transpiration rate in these two rootstocks might have resulted in higher WUE in these two rootstocks. The higher photosynthetic rate, lower transpiration rate, higher water relation parameters and high WUE of Dogridge and Salt Creek indicates their better tolerance to drought.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

J. Satisha , G.S. Prakash , R.M. Bhatt and P. Sampath Kumar , 2007. Physiological Mechanisms of Water Use Efficiency in Grape Rootstocks under Drought Conditions . International Journal of Agricultural Research, 2: 159-164.

DOI: 10.3923/ijar.2007.159.164

URL: https://scialert.net/abstract/?doi=ijar.2007.159.164

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

       

       

Curve Bottom