In: Phyton 54, Fasc. 2 (2014): S. 251-274 with 8 tables DOI: 10.12905/0380.phyton54(2)2014-0251

Key words: Growth, membrane charateristics, nucleic acids, relative water content, transpiration, water use efficiency, Triticum aestivum, wheat.

Summary

Aldesuquy H. S., Baka Z. A. & Mickky B. M. 2014. Role of kinetin and spermine in the reversal of seawater stress-induced alteration in growth vigor, water relations and nucleic acids of wheat plants. – Phyton (Horn, Austria) 54 (2): 251–274, with 8 tables.

A pot experiment was conducted to evaluate the beneficial effect of grain presoaking in kinetin (0.1 mM), spermine (0.3 mM) or their interaction on wheat plants (Triticum aestivum L.) variety Sakha 93. In general seawater at 25% caused a marked decrease in the growth vigor of root, shoot and flag leaf of wheat plants. The content of total protein and nucleic acids in flag leaf were decreased in response to salt stress. Exogenous application of kinetin, spermine or their interaction alleviated the adverse effects of salinity stress by improving growth vigor of root and shoot as well as the content of total proteins and nucleic acids.
Seawater was found to induce marked decrease in transpiration rate; relative water content and water use efficiency but led to significant increase in saturation water deficit in flag leaves of wheat plants. Grain priming with kinetin and/or spermine counteracted the stress induced by seawater salinity by recovering the turgidity in flag leaf of seawater-stressed wheat plants.