Loading content, please wait..
loading..
Logo
Version 3.19
or
Publication Type J
Authors Ayad, J. Y., H. Saoub and R. Ajjour
Title Influence of salinity and nitrogen application on dry matter and ion accumulation in Kochia scoparia L. Schrader
Source Crop Research (Hisar)
Abstract Kochia scoparia L. is a promising salt tolerant forage crop that could be used under saline conditions. Greenhouse pot experiments were conducted at the University of Jordan, Amman, Jordan during the period of 23 March 2005 to 16 June 2005 and from 20 March 2006 to 20 June 2006. Six NaCl salt treatments 0, 25, 50, 100, 200 and 300 mM and four nitrogen levels (0, 100, 200, 300 kg N/ha) were imposed in the first experiment to study their effect on shoot growth, salinity tolerance and ion accumulation. Similar salt concentrations using NaCl-CaCl2, 1 : 1 ratio were imposed in a half-strength Hoagland solution to study shoot and root growth and their interactions with ion accumulation in the second experiment. Kochia dry matter production and salinity tolerance were depressed with increasing salinity levels. The application of N fertilizer enhanced plant growth and nutrient uptake compared with the non-treated control. The uptake of nutrient was also affected by the salinity and N fertilizer applied. Calcium, K and Na uptake of shoot increased with increasing level of salinity irrespective of fertilizer level. Plant shoot and root dry weight were significantly inhibited at 300 mM NaCl and NaCl-CaCl2 where dry weight reduced below 50% of that in the control. The Na and Cl content in both shootss and roots, increased in response to salinity. Na accumulation was similar in both shoots and roots, while Cl and Ca were much higher in shoots than in roots. Both Na and Cl were negatively correlated to salinity tolerance and the impact of Na was higher than that of Cl. Moreover, K: Na ratio was correlated positively to salinity tolerance and this effect was enhanced by N application. The capacity of Kochia to maintain a reasonable growth under salinity and K : Na ratio above one and ion accumulation in shoot and root could implicate better tolerance to adverse salinity stress.
Author Address Ayad, Jamal Y.; Higher Council Sci and Technol, Environm Monitoring and Res Cent Unit, Amman, Jordan
ISSN 0970-4884
ISBN 0970-4884
Publication Date Jul-Nov
Year Published 2010
Volume 40
Issue 1-3
Beginning Page 40-52
Unique Article Identifier BCI:BCI201100202877
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed