Abstract
-1 ) under different irrigation intervals (1, 2 and 4 days). The results showed that increased level of soil Cd through irrigation eventually decreased the yield of lettuce in all cases; however, in some cases yield was increased with lower doses of Cd application. No injury symptoms were observed other than plant height and yield reduction. Shoot dry weight proved to be the most sensitive parameters to the cadmium, especially under water stress conditions. The results also showed that the concentrations of nutrient elements in lettuce shoot were suppressed by water stress. The presence of cadmium in irrigation water did not significantly affect the absorption of nutrient elements by plants except for Fe. Shoot Cd concentration and its uptake decreased with increasing irrigation frequencies and the reverse trend occurred with increasing Cd levels of irrigation water. However, the values were higher than recommended guideline in all conditions. Also, shoot Cd content showed a significant positive correlation with the final accumulated Cd concentration of soil and was expressed by a plateau model under the dry irrigation regime and linear models at other irrigation intervals. Overall, shoot Cd concentration was predicted by using a simple linear regression model regardless of evapotranspiration and transpiration rate of plant.
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Claims 12
Claim · model-written summary
Increasing soil Cd through irrigation reduced lettuce yield.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- increased level of soil Cd through irrigatione0
- Outcome
- yield of lettucee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased level of soil Cd through irrigation eventually decreased the yield of lettuce in all cases”
Claim · model-written summary
Lower Cd doses increased lettuce yield in some cases.
- Taxon
- lettuceLactuca sativat0
- Treatment
- lower doses of Cd applicatione0
- Outcome
- yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in some cases yield was increased with lower doses of Cd application.”
t0“lettuce”
Claim · model-written summary
Cadmium exposure produced no visible injury apart from reduced height and yield.
- Taxon
- lettuceLactuca sativat0
- Outcome
- No injury symptoms were observed other than plant height and yield reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No injury symptoms were observed other than plant height and yield reduction.”
t0“lettuce”
Claim · model-written summary
Shoot dry weight was the most sensitive parameter to cadmium, especially under water stress.
- Taxon
- lettuceLactuca sativat0
- Outcome
- Shoot dry weighte0
- Direction
- most sensitivee0
- Qualifier
- especially under water stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot dry weight proved to be the most sensitive parameters to the cadmium, especially under water stress conditions.”
t0“lettuce”
Claim · model-written summary
Water stress suppressed nutrient element concentrations in lettuce shoots.
- Taxon
- lettuceLactuca sativae0
- Treatment
- water stresse0
- Outcome
- concentrations of nutrient elements in lettuce shoote0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentrations of nutrient elements in lettuce shoot were suppressed by water stress.”
Claim · model-written summary
Irrigation water cadmium did not significantly change nutrient element absorption except Fe.
- Taxon
- lettuceLactuca sativat0
- Treatment
- cadmium in irrigation watere0
- Outcome
- absorption of nutrient elements by plantse0
- Direction
- did not significantly affecte0
- Qualifier
- except for Fee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of cadmium in irrigation water did not significantly affect the absorption of nutrient elements by plants except for Fe.”
t0“lettuce”
Claim · model-written summary
Shoot Cd concentration and uptake declined with increasing irrigation frequency.
- Taxon
- lettuceLactuca sativat0
- Treatment
- increasing irrigation frequenciese0
- Outcome
- Shoot Cd concentration and its uptakee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot Cd concentration and its uptake decreased with increasing irrigation frequencies”
t0“lettuce”
Claim · model-written summary
Shoot Cd concentration and uptake increased with irrigation water Cd levels.
- Taxon
- lettuceLactuca sativat0
- Treatment
- increasing Cd levels of irrigation watere0
- Outcome
- Shoot Cd concentration and its uptakee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reverse trend occurred with increasing Cd levels of irrigation water.”
e1“Shoot Cd concentration and its uptake decreased with increasing irrigation frequencies”
t0“lettuce”
Claim · model-written summary
Shoot Cd values exceeded the recommended guideline in all conditions.
- Taxon
- lettuceLactuca sativat0
- Outcome
- valuese0
- Direction
- highere0
- Qualifier
- in all conditionse0
- Comparator
- recommended guidelinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the values were higher than recommended guideline in all conditions.”
t0“lettuce”
Claim · model-written summary
Shoot Cd content was positively correlated with accumulated soil Cd.
- Taxon
- lettuceLactuca sativat0
- Outcome
- shoot Cd contente0
- Direction
- positive correlatione0
- Comparator
- final accumulated Cd concentration of soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot Cd content showed a significant positive correlation with the final accumulated Cd concentration of soil”
t0“lettuce”
Claim · model-written summary
The shoot Cd–soil Cd relation fit a plateau model under dry irrigation and linear models otherwise.
- Taxon
- lettuceLactuca sativat0
- Outcome
- plateau model under the dry irrigation regime and linear models at other irrigation intervalse0
- Comparator
- linear modelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was expressed by a plateau model under the dry irrigation regime and linear models at other irrigation intervals.”
t0“lettuce”
Claim · model-written summary
A simple linear regression predicted shoot Cd concentration regardless of plant water fluxes.
- Taxon
- lettuceLactuca sativat0
- Outcome
- shoot Cd concentratione0
- Comparator
- evapotranspiration and transpiration rate of plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot Cd concentration was predicted by using a simple linear regression model regardless of evapotranspiration and transpiration rate of plant.”
t0“lettuce”
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See all 57 papers →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.