The effect of foliar nutrition of potassium sulfate on morpho-physiological indices of grapevine under salinity stress

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Minazadeh Raziyeh; KARIMI ROUHOLLAH; Mohamad Parast Behrooz

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Journal: Journal of Plant Biological Sciences Year:2018 | Volume:10 | Issue:37 Page(s): 83-106

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Title

The effect of foliar nutrition of potassium sulfate on morpho-physiological indices of grapevine under salinity stress

Author(s)

Minazadeh Raziyeh | KARIMI ROUHOLLAH | Mohamad Parast Behrooz | Issue Writer Certificate

Keywords

Compatible solutesQ1

Ionic leakageQ1

Photosynthetic pigmentsQ1

Macro elementsQ1

Abstract

Potassium has a main effect on plants salinity tolerance through its effect on cells osmoregulation, and the maintenance of cell turgor. The objective of the present study was to investigate the effect of foliar nutrition of potassium sulfate (0 and 1. 5%) on some morphometric and physiological traits of Bidaneh-Sefid grapevine under salinity stress (0, 25, 50 and 100 mM of NaCl). The factorial experiment in a completely randomized design was carried out in a greenhouse condition. Four weeks after beginning of salt stress, salinity caused decrease in plant height, leaves numbers, leaves area and re-growth. Foliar application of potassium sulfate mitigated the negative impacts of salinity on these morphometric indices. Also, application of 1. 5% potassium sulfate resulted in the stability of Photosynthetic pigments compared to non-treated plants under salinity stress. In no potassium sulfate treatment condition, with increasing of salinity up to 100 mM NaCl, the amount of ion leakage increased and reached up to highest level (64. 2%). While 1. 5% potassium sulfate treatment decreased leaf ion leakage significantly (P≤ 0. 01) in compared to untreated plants. Leaf relative water content decreased dramatically especially in 100 mM of NaCl treatment. While potassium sulfate spray increased the leaf relative water content significantly (P≤ 0. 01) so that at all salinity levels, the highest amount of relative water content was related to 1. 5% potassium sulfate level. Unlike insoluble sugar, the content of soluble sugar and proline as two osmoregulants has shown an increasing trend in the response to salinity and the application of potassium sulfate and reached to highest level in 100 mM of NaCl and 1. 5% potassium sulfate treatments. Also, with increasing of potassium concentration in foliar application of potassium sulfate and in turn cell Na+ /K+ adjusting, increase in the leaf N, K, Mg and Ca content in compared to non-treated plants was observed. Totally, it seems, potassium sulfate treatment with affecting the water relationships, nutrients absorption and osmotic regulation resulted in improved vines tolerance under salinity stress condition.

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APA: Copy

Minazadeh, Raziyeh, KARIMI, ROUHOLLAH, & Mohamad Parast, Behrooz. (2018). The effect of foliar nutrition of potassium sulfate on morpho-physiological indices of grapevine under salinity stress. IRANIAN JOURNAL OF PLANT BIOLOGY, 10(37 ), 83-106. SID. https://sid.ir/paper/160069/en

Vancouver: Copy

Minazadeh Raziyeh, KARIMI ROUHOLLAH, Mohamad Parast Behrooz. The effect of foliar nutrition of potassium sulfate on morpho-physiological indices of grapevine under salinity stress. IRANIAN JOURNAL OF PLANT BIOLOGY[Internet]. 2018;10(37 ):83-106. Available from: https://sid.ir/paper/160069/en

IEEE: Copy

Raziyeh Minazadeh, ROUHOLLAH KARIMI, and Behrooz Mohamad Parast, “The effect of foliar nutrition of potassium sulfate on morpho-physiological indices of grapevine under salinity stress,” IRANIAN JOURNAL OF PLANT BIOLOGY, vol. 10, no. 37 , pp. 83–106, 2018, [Online]. Available: https://sid.ir/paper/160069/en

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