Abstract
The aims of this study were to evaluate the effect of four concentrations of Dimethylsulfate (DMS) 0%, 0.03%, 0.06% and 0.1% under four levels of salinity including 0, 30, 60 and 90 mmol NaCl L-1 on some biochemistry characters such as proline, hydrogen peroxide (H2O2), catalase (CAT), superoxide dismutase (SOD), chlorophyll a (Chl a), chlorophyll b (Chl b) and total chlorophyll. All treatments were distributed according to the factorial experiment using complete ro(CRD) with five replicates. Results revealed that 0.03% of DMS gave the highest proline of 2.08 mg g-1, H2O2 of 0.64 µM 100mg-1, catalase of 19.53 AU min-1g-1 and SOD of 116.8 IU 100mg-1. The control achieved the highest Chl a of35.75 mg g-1, Chl b of 23.38 mg g-1 and total chlorophyll of 79.00 mg g-1 . Furthermore, 30 mM NaCl L-1 possesses highest proline of 2.14 mg g-1, H2O2 of 0.62 µM 100mg-1, catalase of 19.38 AU min-1g-1 and SOD of 114.0IU 100mg-1. The non-saline plantlets (control) gave highest Chl.a of 33.00 mg g-1, Chl b 20.62 mg g-1. While 60 mmol NaCl L-1 gave biggest total chlorophyll of 74.75.
Highlights
Strawberry (Fragaria ananassa Duch) is one of the most important small fruits of the Rosaceae family, which is economically consumed due to its content of elements and its desired taste (27)
This study aimed to investigate the effect of chemical mutagens in the development of genetic variants of the species of Albion and compare its behavior under different levels of salt tension outside the plant body by studying some of the physiological and biochemical mechanisms, as well as determining the genetic variances that occur in the species under study using some molecular indicators
The level of 30 mmol levels differed significantly, the control L-1 revealed the lowest concentration of treatment showed the highest concentration of chlorophyll b, which was 18.00 mg-1. there chlorophyll b, which was 23.38 mg g-1, were significant differences between the the level 0.06% (19.50 mg g-1), and level interactions of the two factors in the
Summary
Strawberry (Fragaria ananassa Duch) is one of the most important small fruits of the Rosaceae family, which is economically consumed due to its content of elements and its desired taste (27). Jamalian et al (15) stated Treatment of strawberry plants with saline concentrations for 5 weeks and a salt shock at a concentration of 20 mmol liters1 found an increase in caffeic acid and coumaric acid and an increase in ferulic acid under saline shock at different levels of salt stress, which are indicators of salt tolerance and a way of defense for the production of antioxidant compounds.
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