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RESPONSE OF YIELD AND SOME SALINITY STRESS PARAMETERS OF Limonium sinuatum TO SALINITY LEVELS

Hulya Akat, Ozlem Akat Saracoglu, Handan Cakar

Abstract


Aim: This study aimed to determine the effects of different salinity levels on plant growth, yield, quality, and certain stress parameters during cultivation of Limonium sinuatum ‘Compindi White’ and ‘Compindi Deep Blue’ in a greenhouse. In addition, the study aimed to provide an insight into future studies that aimed to reveal the magnitude of the effect of different salinity levels on the commercial cultivation of plants.

Materials and method: This study was conducted between 2016 and 2017 at a greenhouse in Mugla-Turkey. Four different concentrations (control, 5, 10, and 20 dS/m) of salinity source in the form of NaCl were used. To examine the physiological characteristics of the plants, the relative water content (RWC) of the leaves, a stress parameter, was presented as percentages.The tips of the plant leaves were examined for the following parameters: chlorophyll a and b, total chlorophyll, carotenoid values, proline and lipid peroxidation.

Result: The results suggested that all parameters investigated were negatively affected by the increased salinity level, and the effects were more prominent in L. sinuatum ‘Compindi Deep Blue’, which have purple flowers. Compared with the control, the marketable yield losses at 20 dS/m salinity level were 59.11% for L. sinuatum ‘Compindi White’ and 72.43 % for L. sinuatum ‘Compindi Deep Blue’.

Conclusion: Considering that many cut flower species cannot be cultivated under saline conditions, losses that occurred in the marketable yield of both varieties grown at up to 10 dS/m salinity may be ignored. Moreover, the use of such plants could contribute to plant variation as an alternative in terms of visualization of saline soils.

 


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