Abstract
The aim of this study was to evaluate eight soybean genotypes to salinity stress. Plants were grown in sand culture in a greenhouse experiment and irrigated with one-tenth strength modified Hoagland nutrient solution with or without 50 mM NaCl. The experimental design was split plot, arranged in randomized completely block design with three replications. Main plot factor was salt stress level (0 and 50 mM NaCl) and sub-plot factor was soybean genotypes (Giza21, Giza22, Giza35, Giza82, Giza83, Giza111, Clark, and Crawford). After four weeks from sowing, the whole plants were collected. The results indicated that salinity induced significant decrease in plant growth of all soybean genotypes, since, salt stress decreased shoot height, whole plant, shoot and root fresh and dry weight and leaf area of all soybean genotypes. However, salt stress increased shoot/root ratio on fresh and dry weight basis, plant moisture content and electrolyte leakage of all soybean genotypes. Chlorophyll content index no significantly decreased with salt stress. Salt stress increased shoot and root Na+ content while decreased K+ content and K+/Na+ ratio of shoot and root for all soybean genotypes. The obtained results showed that the eight soybean genotypes responded differently to salt stress. It seems that Giza82 was more tolerant and Clark was more sensitive to salinity than other genotypes. These genotypes can be arranged with respect to tolerance to salinity in the order: Giza82 > Giza35 > Giza21 > Giza22 > Giza111 > Crawford > Giza83 > Clark.
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Claims 7
Claim · model-written summary
Salt stress significantly reduced shoot height, biomass weights and leaf area across soybean genotypes.
- Taxon
- soybean
Glycine maxe0 - Treatment
- salt stresse0
- Outcome
- shoot height, whole plant, shoot and root fresh and dry weight and leaf areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress decreased shoot height, whole plant, shoot and root fresh and dry weight and leaf area of all soybean genotypes”
e1“salinity induced significant decrease in plant growth of all soybean genotypes”
Claim · model-written summary
Salt stress increased shoot/root ratios, moisture and electrolyte leakage.
- Taxon
- soybeanGlycine maxe0
- Treatment
- salt stresse0
- Outcome
- shoot/root ratio on fresh and dry weight basis, plant moisture content and electrolyte leakagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress increased shoot/root ratio on fresh and dry weight basis, plant moisture content and electrolyte leakage of all soybean genotypes”
Claim · model-written summary
Chlorophyll content index decreased nonsignificantly under salt stress.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- salt stresse0
- Outcome
- Chlorophyll content indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll content index no significantly decreased with salt stress”
t0“Soybean”
Claim · model-written summary
Salt stress increased shoot and root sodium content.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Salt stresse0
- Outcome
- shoot and root Na+ contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased shoot and root Na+ content while decreased K+ content and K+/Na+ ratio of shoot and root for all soybean genotypes”
Claim · model-written summary
Salt stress decreased shoot and root potassium content and K+/Na+ ratio.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Salt stresse0
- Outcome
- K+ content and K+/Na+ ratio of shoot and roote0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased shoot and root Na+ content while decreased K+ content and K+/Na+ ratio of shoot and root for all soybean genotypes”
Claim · model-written summary
The eight genotypes differed in salt response.
- Taxon
- soybeanGlycine maxe0
- Outcome
- responded differently to salt stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the eight soybean genotypes responded differently to salt stress”
Claim · model-written summary
Giza82 was most tolerant and Clark most sensitive, with the stated ranking.
- Taxon
- SoybeanGlycine maxt0
- Material
- Giza82e0
- Outcome
- tolerance to salinitye0
- Qualifier
- Giza82 > Giza35 > Giza21 > Giza22 > Giza111 > Crawford > Giza83 > Clarke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Giza82 was more tolerant and Clark was more sensitive to salinity than other genotypes. These genotypes can be arranged with respect to tolerance to salinity in the order: Giza82 > Giza35 > Giza21 > Giza22 > Giza111 > Crawford > Giza83 > Clark”
t0“Soybean”
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