Abstract
This field experiment was carried out through the successive growth seasons (Summer, 2008 and 2009). In El-Tina Plain area to study salinity tolerance of two peanut cultivars namely Gregory and Giza 6 and the soil salinity level effect on plant growth, yield, leaf water content, chemical composition and other parameters. Salinity levels of the three used soils were 7.55, 9.20 and 12.5dSm-1. The studies treatments were disturbed among the experimental plets in split design with six replicates. All farming processes for peanut plants were carried out according to recommendations of Ministry of Agriculture. At flower stage, the plant samples were taken from three replicates for estimate some vegetative growth parameters and chemical variables. On the other hand, other plants samples were taken from the other three replicates at maturity stage where its used to estimate the yield and the chemical composition of both straw and seeds. The obtained results cleared that, all studied characters of growth, total water content, free water content, relative water content, leaf water potential, photosynthetic pigments, total carbohydrates and non soluble carbohydrates showed a significant decrease by increasing salinity levels. Moreover data recorded a significant increase in total soluble sugars, leaf water deficit, bound water content, membrane integrity, proline and total free amino acids concentrations and enzyme activity as a result of increasing salt stress conditions. Gregory variety had the best growth and yield, and also its was more stable in its physiological and chemical component under salt stress conditions compared to variety Giza 6. So, Gregory variety was more tolerance to salinity stress compared to Giza 6 variety. The obtained data also show that, the yield of both straw and seeds and also its content of N, P and K were decreased with the increase the levels of soil salinity. Such decrease was found with oil and protein content of seeds. In two growth seasons, the previous decrease found with Gregory cultivar was lower than that found with Giza 6 cultivar.
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Claims 9
Claim · model-written summary
Increasing salinity significantly reduced growth, water content, water potential, pigments and carbohydrates.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- increasing salinity levelse0
- Outcome
- growth, total water content, free water content, relative water content, leaf water potential, photosynthetic pigments, total carbohydrates and non soluble carbohydratese0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all studied characters of growth, total water content, free water content, relative water content, leaf water potential, photosynthetic pigments, total carbohydrates and non soluble carbohydrates showed a significant decrease by increasing salinity levels”
t0“peanut”
Claim · model-written summary
Increasing salt stress significantly increased soluble sugars, water deficit, bound water, membrane integrity, proline, amino acids and enzyme activity.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- increasing salt stress conditionse0
- Outcome
- total soluble sugars, leaf water deficit, bound water content, membrane integrity, proline and total free amino acids concentrations and enzyme activitye0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“significant increase in total soluble sugars, leaf water deficit, bound water content, membrane integrity, proline and total free amino acids concentrations and enzyme activity as a result of increasing salt stress conditions”
Claim · model-written summary
Gregory had better growth and yield than Giza 6 under salt stress.
- Taxon
- peanutArachis hypogaeat0
- Material
- Gregorye0
- Outcome
- growth and yielde0
- Direction
- beste0
- Comparator
- Giza 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“Gregory variety had the best growth and yield, and also its was more stable in its physiological and chemical component under salt stress conditions compared to variety Giza 6”
Claim · model-written summary
Gregory had more stable physiological and chemical components under salt stress than Giza 6.
- Taxon
- peanutArachis hypogaeat0
- Material
- Gregorye0
- Outcome
- physiological and chemical componente0
- Direction
- more stablee0
- Comparator
- Giza 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“Gregory variety had the best growth and yield, and also its was more stable in its physiological and chemical component under salt stress conditions compared to variety Giza 6”
Claim · model-written summary
Gregory was more salinity tolerant than Giza 6.
- Taxon
- peanutArachis hypogaeat0
- Material
- Gregorye0
- Outcome
- tolerance to salinity stresse0
- Direction
- moree0
- Comparator
- Giza 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“Gregory variety was more tolerance to salinity stress compared to Giza 6 variety”
Claim · model-written summary
Rising soil salinity reduced straw and seed yield.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- increase the levels of soil salinitye0
- Outcome
- yield of both straw and seedse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“yield of both straw and seeds and also its content of N, P and K were decreased with the increase the levels of soil salinity”
Claim · model-written summary
Rising soil salinity reduced N, P and K content.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- increase the levels of soil salinitye0
- Outcome
- content of N, P and Ke0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“yield of both straw and seeds and also its content of N, P and K were decreased with the increase the levels of soil salinity”
Claim · model-written summary
Seed oil and protein content decreased with salinity.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- seedse0
- Outcome
- oil and protein content of seedse0
- Direction
- decreasee0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“Such decrease was found with oil and protein content of seeds”
Claim · model-written summary
Salinity associated losses were smaller for Gregory than Giza 6 in both seasons.
- Taxon
- peanutArachis hypogaeat0
- Material
- Gregorye0
- Outcome
- previous decreasee0
- Direction
- lowere0
- Comparator
- Giza 6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“peanut”
e0“In two growth seasons, the previous decrease found with Gregory cultivar was lower than that found with Giza 6 cultivar”