Evaluation for Salt Stress Tolerance in Two Strawberry Cultivars

Abstract

Salt stress conditions have been found to destroy the vital physiological process in plant where slower cell division and cell enlargement or both and limit mineral nutrient uptake with clearly nutritional imbalance. A greenhouse pot experiment was carried out at Agricultural Research Station, Mu'tah University, Jordan to evaluate growth responses and mineral composition of two strawberry cultivars to salt stress by different NaCl levels. Six NaCl levels (0, 25, 50, 75, 100 and 150 mM) and two strawberry cultivars, Camarosa and Albino, were used. Nutrient elements were added at the 0.5-strength Hoagland nutrient concentration. Distilled water supplemented with half strength Hoagland solution was used as control. Number of leaves and runners of both strawberry cultivars were significantly reduced by increasing NaCl level. Growth parameters (shoot, root and total dry weights and root: Shoot ratios) were significantly reduced with each increase in salinity level. Camarosa had higher value for all these parameters compared with Albino. Leaf chlorophyll content of both strawberry cultivars was significantly decreased when 25 mM NaCl or higher was applied. Regardless of NaCl level, Camarosa cultivar had significantly higher chlorophyll content compared with Albino. Elevated salinity level significantly increased leaf proline content of both cultivars. Albino leaves accumulated higher proline compared with Camarosa at salinized and non-salinized treatments. Both strawberry cultivars had significantly higher leaf and root Na and Cl contents under salinized conditions compared with non-salinized conditions. Each increase in NaCl level resulted in an increase in leaf and root Na and Cl contents of both cultivars. On contrast, leaf K content was decreased with salinity, root content of this mineral was significantly increased with salinity. It could be recommended to avoid growing 'Camarosa' and 'Albino' strawberry using irrigation water of 25 mM NaCl or more.

Genome-wide identification, and characterization of the CDPK gene family reveal their involvement in abiotic stress response in Fragaria x ananassa

“…However, the cv. Camarosa used in this study is considered tolerant to drought and salt stress compared to other cultivars 57,58 . For example, the stress levels used in this study did not result in necrosis, extensive dehydration or death of plants ( Figure S2).…”

Utilizing Biotechnology Tools for Silecting Salt Tolerant Rootstock of Peach Hassawi

“…It is also, characterized by its adaptive characters to hard conditions and by being a good growth activator that result in delaying aging of plants (10). It is generally, known that MS medium is characterized by its calcium and potassium content that reduces the NaCl negative effects on the explant because of potassium accumulation inside its cells, that enhances growth and salinity tolerance besides achieving balance between Na, K & Ca that helps adjusting pH of the nutrient medium (7). Besides that presence of myoinositol in association with proline in the nutrient medium increases, salinity tolerance as proline moves to leaves and roots which sustains growth rate under stress (24).…”

Pertumbuhan Kalus Jeruk JC (Japansche Citroen) pada Media Murashige and Skoog dengan Berbagai Konsentrasi NaCl

“…Penambahan NaCl pada media menyebabkan sel-sel pada tanaman melakukan regulasi dalam metabolismenya sehingga mampu bertahan hidup dalam kondisi cekaman salinitas [13]. Mekanisme adaptasi yang dilakukan oleh sel saat tercekam NaCl adalah dengan mengakumulasi ion-ion organik seperti betain, asam amino bebas, karbohidrat terlarut dan prolin atau senyawa dengan berat molekul yang rendah [15]. Senyawasenyawa tersebut memberikan perlindungan pada tanaman dari dampak cekaman melalui mekanisme yang berbeda, yakni keseimbangan osmotik seluler, detoksifikasi Reactive Oxygen Species, menjaga integritas membran dan menstabilkan enzim atau protein [16].…”