Abstract
The impact of salt stress (NaCl 100 mM) on two lettuce varieties Romaine and Vista was conducted at germination and early seedling stages. The seeds of lettuce varieties were provided by the Seed Laboratory of Tunisian Ministry of Agriculture. The seeds were germinated in Petri dishes with double filter paper in distilled water (control) or NaCl solution (100 mM) for 5 days. The result showed that salinity significantly affected percentage and rate of germination in Vista variety but 100% of germination was found in Romaine. Length and fresh weight of root and shoot were reduced significantly with salt treatment in two lettuce varieties. Regarding biochemical analysis, acid phosphatase activity in root increased in Romaine and decreased in Vista. In shoot, this activity showed no difference with the control in the two varieties. However in cotyledons, and during 24 hours after germination, salinity decreased acid phosphatase activity in both varieties whereas in the later hours (48 - 96 h) this activity reached the value of the control in Romaine and Vista.
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Claims 9
Claim · model-written summary
Salinity significantly affected germination percentage and rate in Vista.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- Vistae0
- Treatment
- NaCl solution (100 mM)e1
- Outcome
- percentage and rate of germinatione0
- Comparator
- distilled water (control)e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“salinity significantly affected percentage and rate of germination in Vista variety”
e1“distilled water (control) or NaCl solution (100 mM)”
Claim · model-written summary
Romaine germination reached 100% under salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“100% of germination was found in Romaine”
e1“The result showed that salinity”
Claim · model-written summary
Salt treatment significantly reduced root and shoot length in both lettuce varieties.
- Taxon
- LettuceLactuca sativat0
- Organ / stage
- root and shoote0
- Treatment
- salt treatmente0
- Outcome
- Lengthe0
- Direction
- reducede0
- Comparator
- distilled water (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“Length and fresh weight of root and shoot were reduced significantly with salt treatment in two lettuce varieties”
e1“distilled water (control) or NaCl solution (100 mM)”
Claim · model-written summary
Salt treatment significantly reduced root and shoot fresh weight in both lettuce varieties.
- Taxon
- LettuceLactuca sativat0
- Treatment
- salt treatmente0
- Outcome
- fresh weight of root and shoote0
- Direction
- reducede0
- Comparator
- distilled water (control)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“Length and fresh weight of root and shoot were reduced significantly with salt treatment in two lettuce varieties”
e1“distilled water (control) or NaCl solution (100 mM)”
Claim · model-written summary
Salinity increased root acid phosphatase activity in Romaine.
- Taxon
- LettuceLactuca sativat0
- Material
- Romainee0
- Treatment
- salinitye1
- Outcome
- acid phosphatase activity in roote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“acid phosphatase activity in root increased in Romaine”
e1“salinity decreased acid phosphatase activity”
Claim · model-written summary
Salinity decreased root acid phosphatase activity in Vista.
- Taxon
- LettuceLactuca sativat0
- Material
- Vistae0
- Treatment
- salinitye1
- Outcome
- acid phosphatase activity in roote0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“acid phosphatase activity in root increased in Romaine and decreased in Vista”
e1“salinity decreased acid phosphatase activity”
Claim · model-written summary
Shoot acid phosphatase activity did not differ from control in both varieties.
- Taxon
- LettuceLactuca sativat0
- Organ / stage
- shoote0
- Treatment
- salinitye2
- Outcome
- this activitye0
- Direction
- no differencee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“In shoot, this activity showed no difference with the control in the two varieties”
e1“acid phosphatase activity in root”
e2“salinity decreased acid phosphatase activity”
Claim · model-written summary
During the first 24 hours after germination, salinity reduced cotyledon acid phosphatase activity in both varieties.
- Taxon
- LettuceLactuca sativat0
- Organ / stage
- cotyledonse0
- Treatment
- salinitye0
- Outcome
- acid phosphatase activitye0
- Direction
- decreasede0
- Qualifier
- during 24 hours after germinatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“in cotyledons, and during 24 hours after germination, salinity decreased acid phosphatase activity in both varieties”
Claim · model-written summary
At 48–96 hours, cotyledon acid phosphatase activity reached control levels in both varieties.
- Taxon
- LettuceLactuca sativat0
- Organ / stage
- cotyledonse1
- Treatment
- salinitye1
- Outcome
- this activitye0
- Direction
- no_changeinferrede0
- Qualifier
- 48 - 96 he0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lettuce”
e0“in the later hours (48 - 96 h) this activity reached the value of the control in Romaine and Vista”
e1“in cotyledons, and during 24 hours after germination, salinity decreased acid phosphatase activity”
The same questions in other papers
salinity · growth · Lactuca sativa (garden lettuce)Results differ
57 papers in the same direction as this paper · 4 in the opposite direction
- negative
- positive
- positive
58 papers more in this group
See all 62 papers →salinity · soil: biology · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- no effect
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.