Growth response, water relations and K/Na ratio in wheat under sodium and calcium interactions

Abstract

ABSTRACT:A study was conducted in the glass house to observe the role of K/Na ratio and moisture contents on the growth of wheat (Triticum aestivum L .cv. Lu-26) under NaCl stress. The plants were grown under hydroponic conditions at two salinity levels of 0 and 50 mM as NaCl. Calcium as CaSO 4 . 2H 2 O was applied at 3 and 6 mM to the pots of salinity. The plants were harvested after 30 days of growth. The treatments showed a highly significant (p< 0.01) effect on the growth and ionic relations. Fresh weight of shoot and root increased by 44 and 41 % respectively, with increased application of CaSO 4 from 3 to 6 mM in the saline medium. Dry mass was increased by 46% at 50 mM of NaCl with the application of 6 mM of CaSO 4 .2H 2 O. Relative water content in the root decreased with the application of CaSO 4 .2H 2 O in saline treatment as compared to non-saline treatment. The increased K/Na ratio had a pronounced effect on the increase of dry mass of shoot by 72% at 6 mM than 3 mM of CaSO 4 .2H 2 O application in the saline medium. @JASEM

Effect of mulching and amelioration on growth and yield of groundnut on saline soil

“…Soil EC can be reduced and negative effect of Na can be alleviated by application of K (Kabir et al, 2004;Kopittke, 2012), Ca (Dabuxilatu and Ikeda, 2005), and elemental S (Nazar et al, 2011). Application of compost (Radwan and Awad, 2002), gypsum (Niazi et al, 2007;da Silveira et al, 2008;Joachim and Verplancke, 2010), combination of manure with gypsum (Smith et al, 2009;Chaum et al,. 2011;Kahlon et al, 2012;Murtaza et al, 2013) are effective in decreasing soil EC and improving plant growth.…”

Growth of Wheat and Na+/ K+ Ratio under Neutral and Alkaline Salts Stress

“…This increases expansion as well as longitudinal growth of a plant tissue [22]. Under salinity, Na + /K + ratio in wheat is increased [23]. Usually with application of NS, this ratio remains higher than the presence of AS.…”