Abstract
Abstract In order to study the adaptive behavior of two tomato varieties (Solanumlicopersicum L.) Safa and Assila subjected to salt stress with concentrations of (50, 100, 150 and 200 mM) in (NaCl+CaCl2) during the growth phase, a morphological (number of leaves, stem length, stomatal density, length of the main root axis) and physio-biochemical (relative water content, chlorophyll pigments content, soluble sugars content) evaluation was conducted. Our results confirm the sensitivity of both varieties to applied salt stress; this sensitivity was manifested by a statistically significant decrease in: number of leaves, length of the stem and the contents of chlorophyll a and total chlorophyll. While, the soluble sugars content at the leaf level increased associated with an increase stomatal density on both ventral and dorsal epiderms. On the other hand, the ratio of root dry weight and shoot dry weight (RDW/SDW) was decreased with an elongation of the main root according to the different doses of salts.
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Claims 6
Claim · model-written summary
Salt stress caused a statistically significant decrease in number of leaves and stem length in both tomato varieties.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- salt stresse1
- Outcome
- number of leaves, length of the steme0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“statistically significant decrease in: number of leaves, length of the stem”
e1“applied salt stress”
t0“Tomato”
Claim · model-written summary
Salt stress caused a statistically significant decrease in chlorophyll a and total chlorophyll contents in both tomato varieties.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salt stresse1
- Outcome
- contents of chlorophyll a and total chlorophylle0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in: number of leaves, length of the stem and the contents of chlorophyll a and total chlorophyll”
e1“applied salt stress”
t0“Tomato”
Claim · model-written summary
Leaf soluble sugars content increased under salt stress.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salt stresse1
- Outcome
- soluble sugars content at the leaf levele0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the soluble sugars content at the leaf level increased”
e1“applied salt stress”
t0“Tomato”
Claim · model-written summary
Stomatal density on both ventral and dorsal epidermis increased under salt stress.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salt stresse1
- Outcome
- stomatal densitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase stomatal density on both ventral and dorsal epiderms”
e1“applied salt stress”
t0“Tomato”
Claim · model-written summary
The ratio of root dry weight to shoot dry weight (RDW/SDW) decreased with the different salt doses.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salt stresse1
- Outcome
- ratio of root dry weight and shoot dry weight (RDW/SDW)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ratio of root dry weight and shoot dry weight (RDW/SDW) was decreased”
e1“applied salt stress”
t0“Tomato”
Claim · model-written summary
The main root axis elongated with the different salt doses.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salt stresse1
- Outcome
- main roote0
- Direction
- elongatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an elongation of the main root according to the different doses of salts”
e1“applied salt stress”
t0“Tomato”
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