Abstract
Salt stress is a serious environmental problem throughout the world which may be partially relieved by breeding cultivars that can tolerate salt stress. Plant breeding may provide a relatively cost effective short-term solution to the salinity problem by producing cultivars able to remain productive at low to moderate levels of salinity. Five alfalfa cultivars, �Seyah-Roud�, �Ahar-Hourand�, �Oskou�, �Malekan� and �Sefida-Khan� were assessed for salt tolerance at mature plant stage. A greenhouse screening system was used to evaluate individual alfalfa plants grown in perlit medium, and irrigated with water containing different amounts of NaCl. Three salt levels were achieved by adding 0, 100 and 200 mM NaCl to Hoagland nutrient solution, respectively. Forage yield, sodium and potassium contents and K/Na ratio was determined. Also, leaf samples were analyzed for proline and chlorophyll contents. The ecotypes Seyha-Roud and �Sefida-Khan� had comparatively less sodium contents than �Oskou�, �Ahar-Hourand� and �Malekan� ecotypes, also potassium content increased under saline condition. Forage yield of different alfalfa ecotypes was significantly influenced by the salinity. The ecotypes �Malekan�, Ahar- Hourand and �Oskou� were successful in maintaining forage yield under salinity stress. Sodium contents increased due to salinity in all alfalfa ecotypes however ecotypes �Ahar-Hourand� and �Malekan� maintained the highest leaf Na concentration. They showed higher content of K than other ecotypes but had lower K/Na ratio. It was concluded that, two ecotypes �Malekan� and �Ahar-Hourand� were better.
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Claims 9
Claim · model-written summary
Seyha-Roud and Sefida-Khan had less sodium than three other ecotypes.
- Taxon
- Alfalfa
Medicago sativat0 - Outcome
- sodium contentse0
- Direction
- lesse0
- Comparator
- �Oskou�, �Ahar-Hourand� and �Malekan� ecotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ecotypes Seyha-Roud and �Sefida-Khan� had comparatively less sodium contents than �Oskou�, �Ahar-Hourand� and �Malekan� ecotypes”
t0“Alfalfa (Medicago sativa L.)”
Claim · model-written summary
Potassium content increased under saline conditions.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- saline conditione0
- Outcome
- potassium contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium content increased under saline condition”
t0“Alfalfa”
Claim · model-written summary
Salinity significantly influenced forage yield.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- salinitye0
- Outcome
- Forage yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage yield of different alfalfa ecotypes was significantly influenced by the salinity.”
Claim · model-written summary
Malekan, Ahar-Hourand and Oskou maintained forage yield under salinity.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- salinity stresse0
- Outcome
- maintaining forage yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ecotypes �Malekan�, Ahar- Hourand and �Oskou� were successful in maintaining forage yield under salinity stress.”
t0“Alfalfa”
Claim · model-written summary
Sodium content increased under salinity in all ecotypes.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- salinitye0
- Outcome
- Sodium contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sodium contents increased due to salinity in all alfalfa ecotypes”
Claim · model-written summary
Ahar-Hourand and Malekan had the highest leaf sodium concentrations.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- leaf Na concentratione0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ecotypes �Ahar-Hourand� and �Malekan� maintained the highest leaf Na concentration.”
t0“Alfalfa”
Claim · model-written summary
Those ecotypes had higher potassium but lower potassium to sodium ratios than other ecotypes.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- content of Ke0
- Direction
- highere0
- Comparator
- other ecotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“They showed higher content of K than other ecotypes but had lower K/Na ratio.”
e1“ecotypes �Ahar-Hourand� and �Malekan�”
t0“Alfalfa”
Claim · model-written summary
Ahar-Hourand and Malekan had lower K/Na ratios than other ecotypes.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- K/Na ratioe0
- Direction
- lowere0
- Comparator
- other ecotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“They showed higher content of K than other ecotypes but had lower K/Na ratio.”
t0“Alfalfa”
Claim · model-written summary
The authors judged Malekan and Ahar-Hourand the better ecotypes.
- Taxon
- AlfalfaMedicago sativat0
- Outcome
- two ecotypes �Malekan� and �Ahar-Hourand� were bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that, two ecotypes �Malekan� and �Ahar-Hourand� were better.”
t0“Alfalfa”
The same questions in other papers
salinity · nutrient: content · Medicago sativa (alfalfa)Positive and negative results
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See all 11 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.