Abstract
Salt stress is one of the most important abiotic stress factors that significantly negatively affect plant growth and yield. This study evaluated the morphological and physiological responses of eight lettuce (Lactuca sativa L.) varieties to salt stress under hydroponic conditions. The lettuce varieties were grown in an aerated hydroponic system under control (1.8 dS/m) and salt stress (6.0 dS/m) conditions. The results showed that salt stress caused significant reductions in shoot biomass, particularly compared to root biomass characteristics. The varieties with the greatest reductions in biomass parameters under salt stress conditions were Chicarita, Triplex, and Levistro, while Baeza and Cherokee produced higher biomass. Morphological characteristics such as leaf number, stem diameter, plant height, and leaf area were also significantly affected by salt stress, with leaf area—the edible part of the lettuce—being the most affected by salt stress. As with other parameters, the Baeza, Kireve, and Cherokee varieties were more stable in these parameters. The Chicarita variety again showed the lowest performance in these parameters. Leaf color parameters such as L, a*, b*, chroma, and hue angle were significantly affected by salt stress. Under salt stress conditions, the Expedition and Kireve varieties had more vibrant colors than other varieties. Chlorophyll-a, chlorophyll-b, and total chlorophyll content increased in some varieties due to salt stress, while they decreased in others. Salt stress generally increased leaf sap EC and SSC values. The effect of salt stress on fruit juice pH was not statistically significant. In conclusion, salt stress negatively affected shoot parameters in lettuce varieties, while in some varieties it caused an increase in root morphology. These differences in response to salt stress are related to stress adaptation ability, so the parameters used in this study can be used as selection criteria for lettuce or other plants. Additionally, the varieties identified as salt-tolerant in this study can be used in breeding programs aimed at growing plants under saline conditions.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 16
Claim · model-written summary
Salt stress significantly reduced shoot biomass more than root biomass.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- salt stresse0
- Outcome
- shoot biomasse0
- Direction
- reductionse0
- Comparator
- root biomass characteristicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress caused significant reductions in shoot biomass, particularly compared to root biomass characteristics”
e1“eight lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Chicarita, Triplex and Levistro had the greatest biomass reductions under salt stress.
- Taxon
- lettuceLactuca sativae1
- Material
- Chicarita, Triplex, and Levistroe0
- Treatment
- salt stresse0
- Outcome
- biomass parameterse0
- Direction
- greatest reductionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greatest reductions in biomass parameters under salt stress conditions were Chicarita, Triplex, and Levistro”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Baeza and Cherokee produced higher biomass.
- Taxon
- lettuceLactuca sativae1
- Material
- Baeza and Cherokeee0
- Outcome
- biomasse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Baeza and Cherokee produced higher biomass”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Salt stress significantly affected leaf number, stem diameter and plant height.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salt stresse0
- Outcome
- leaf number, stem diameter, plant heighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf number, stem diameter, plant height, and leaf area were also significantly affected by salt stress”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Leaf area was the most affected morphological trait under salt stress.
- Taxon
- lettuceLactuca sativae0
- Treatment
- salt stresse0
- Outcome
- leaf areae0
- Direction
- most affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area—the edible part of the lettuce—being the most affected by salt stress”
Claim · model-written summary
Baeza, Kireve and Cherokee were more stable in morphological traits.
- Taxon
- lettuceLactuca sativae1
- Material
- Baeza, Kireve, and Cherokeee0
- Outcome
- leaf number, stem diameter, plant height, and leaf areae2
- Direction
- more stablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Baeza, Kireve, and Cherokee varieties were more stable in these parameters”
e1“lettuce (Lactuca sativa L.) varieties”
e2“leaf number, stem diameter, plant height, and leaf area”
Claim · model-written summary
Chicarita had the lowest performance in morphological traits.
- Taxon
- lettuceLactuca sativae1
- Material
- Chicaritae0
- Outcome
- leaf number, stem diameter, plant height, and leaf areae2
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Chicarita variety again showed the lowest performance in these parameters”
e1“lettuce (Lactuca sativa L.) varieties”
e2“leaf number, stem diameter, plant height, and leaf area”
Claim · model-written summary
Salt stress significantly affected leaf color parameters.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salt stresse0
- Outcome
- Leaf color parameters such as L, a*, b*, chroma, and hue anglee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf color parameters such as L, a*, b*, chroma, and hue angle were significantly affected by salt stress”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Expedition and Kireve had more vibrant colors under salt stress.
- Taxon
- lettuceLactuca sativae1
- Material
- Expedition and Kirevee0
- Treatment
- salt stresse0
- Outcome
- colorse0
- Direction
- more vibrante0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salt stress conditions, the Expedition and Kireve varieties had more vibrant colors than other varieties”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Salt stress increased chlorophyll-a, chlorophyll-b and total chlorophyll in some varieties.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salt stresse0
- Outcome
- Chlorophyll-a, chlorophyll-b, and total chlorophyll contente0
- Direction
- increasede0
- Qualifier
- some varietiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll-a, chlorophyll-b, and total chlorophyll content increased in some varieties due to salt stress”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Salt stress decreased chlorophyll content in other varieties.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salt stresse0
- Outcome
- Chlorophyll-a, chlorophyll-b, and total chlorophyll contente0
- Direction
- decreasede0
- Qualifier
- otherse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll-a, chlorophyll-b, and total chlorophyll content increased in some varieties due to salt stress, while they decreased in others”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Salt stress generally increased leaf sap EC and SSC.
- Taxon
- lettuceLactuca sativae1
- Treatment
- Salt stresse0
- Outcome
- leaf sap EC and SSC valuese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress generally increased leaf sap EC and SSC values”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Salt stress had no statistically significant effect on fruit juice pH.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salt stresse0
- Outcome
- fruit juice pHe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of salt stress on fruit juice pH was not statistically significant”
e1“lettuce (Lactuca sativa L.) varieties”
Claim · model-written summary
Salt stress increased root morphology in some lettuce varieties.
- Taxon
- lettuceLactuca sativae1
- Treatment
- salt stresse1
- Outcome
- root morphologye0
- Direction
- increasee0
- Qualifier
- some varietiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in some varieties it caused an increase in root morphology”
e1“salt stress negatively affected shoot parameters in lettuce varieties”
Claim · model-written summary
The study recommends using response parameters as lettuce selection criteria.
- Taxon
- lettuceLactuca sativae0
- Outcome
- selection criteriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parameters used in this study can be used as selection criteria for lettuce or other plants”
Claim · model-written summary
The identified salt-tolerant varieties can be used in breeding for saline conditions.
- Taxon
- lettuceLactuca sativae1
- Outcome
- breeding programs aimed at growing plants under saline conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the varieties identified as salt-tolerant in this study can be used in breeding programs aimed at growing plants under saline conditions”
e1“lettuce (Lactuca sativa L.) varieties”
The same questions in other papers
salinity · physiology: pigments · Lactuca sativa (garden lettuce)Results differ
3 papers in the same direction as this paper · 11 in the opposite direction
- negative
- negative
- no effect
11 papers more in this group
See all 15 papers →salinity · growth · Lactuca sativa (garden lettuce)Results differ
3 papers in the same direction as this paper · 58 in the opposite direction
- negative
- negative
- negative
58 papers more in this group
See all 62 papers →salinity · soil: chemistry · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.