Journal of Food, Agriculture and Environment




Vol 7, Issue 3&4,2009
Online ISSN: 1459-0263
Print ISSN: 1459-0255


Salinity effect on nutrients accumulation in alfalfa shoots in hydroponic condition


Author(s):

M. B. Khorshidi 1*, M. Yarnia 2, D. Hassanpanah 3

Recieved Date: 2009-05-09, Accepted Date: 2009-10-11

Abstract:

For evaluation of microelements distribution in alfalfa shoot in saline condition an experiment was conducted in hydroponic condition on four cultivars (Sistan, Golestan, FAO2566 and Hamedani) in five salinity levels as 0, 50, 100, 150 and 200 mM NaCl in Hoagland media in a RCBD with three replicates. Results showed that increasing salinity affected all elements except P. Increasing salinity decreased K+, Ca2+ and N concentration in leaf but increased Mg2+, Na+ and Cl. Highest absorption of K+ and Ca2+ and least Na+concentration was obtained by Golestan and highest absorption of Na+ and least K+ and Ca2+ concentration was obtained by Hamedani. K/Na and Ca/Na ratios were identified as important criterions for tolerance recognition. Tolerant cultivars can absorb Ca2+ and K+more than Na+ in saline condition and Na+ exclusion is their important way to achieve tolerance. In susceptible cultivars, decreasing Ca2+ and K+ absorption beside Na+inclusion in cells produced lower K/Na and Ca/Na ratios.

Keywords:

Alfalfa, hydroponic, nutrients, salinity


Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 3&4
Category: Environment
Pages: 787-790


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