Abstract
Salinity is a serious environmental constraint to crop production in many parts of the world and the development of crops with improved salt tolerance is proposed as part of solution to this problem. This research was performed out in order to study the effects of different salinity levels on germination, growth, dry weight, proline, water soluble carbohydrate and chlorophyll content of three barley (Hordeum vulgare L.) cultivars named Jonoob (INC-54), Reyhan (INC-45) & Nosrat (INC -47).The experiment was carried out using factorial based on completely randomized design with three replications.Seven old seedlings after germination were transferred to Hoagland nutrient solution under the effect of salinity levels (0, 50, 150 and 250 mM NaCl)in during seven days. Data variance analysis showed that seed germination of three barley cultivars was significantly (P<0.01) affected by salinity levels. Minimum germination percentage was obtained in highest salinity (250mM NaCl).The sequence of reduction in germination was Jonoob>Reyhan>Nosrat. The results showed that, increasing in salinity decreased all growth parameters. Salinity stress decreased shoot and root length, root dry weight and chlorophyll contents in every three cultivars. But decreasing of chlorophyll was less in Nosrat compared to two other items. Proline content and soluble carbohydrate were increased in all of the three cultivars with enhance of NaCl concentration. By increasing of salinity stress accumulation of proline and soluble sugar content in leaves of Nosrat cultivar was more than other cultivars.As saltiness increases resistance natural responses in this plant gets better considering less decrease in chlorophyll amount and strategy of more production about praline and sugar solution compared to two other items.
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Claims 9
Claim · model-written summary
Salinity significantly affected germination of the three barley cultivars.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- salinity levelse0
- Outcome
- seed germinatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“seed germination of three barley cultivars was significantly (P<0.01) affected by salinity levels”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Germination percentage was lowest at 250mM NaCl.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- 250mM NaCle0
- Outcome
- germination percentagee0
- Direction
- Minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum germination percentage was obtained in highest salinity (250mM NaCl)”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Germination reduction ranked Jonoob above Reyhan above Nosrat.
- Taxon
- barleyHordeum vulgaret0
- Material
- Jonoob>Reyhan>Nosrate0
- Outcome
- reduction in germinatione0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sequence of reduction in germination was Jonoob>Reyhan>Nosrat”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Increasing salinity decreased growth parameters.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- salinitye0
- Outcome
- growth parameterse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing in salinity decreased all growth parameters”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Salinity reduced shoot and root length and root dry weight in all three cultivars.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Salinity stresse0
- Outcome
- shoot and root length, root dry weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stress decreased shoot and root length, root dry weight and chlorophyll contents in every three cultivars”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Salinity reduced chlorophyll content in all three cultivars.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Salinity stresse0
- Outcome
- chlorophyll contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stress decreased shoot and root length, root dry weight and chlorophyll contents in every three cultivars”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Nosrat had a smaller chlorophyll decline than the other cultivars.
- Taxon
- barleyHordeum vulgaret0
- Material
- Nosrate0
- Outcome
- decreasing of chlorophylle0
- Direction
- lesse0
- Comparator
- two other itemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreasing of chlorophyll was less in Nosrat compared to two other items”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Proline and soluble carbohydrate increased with NaCl concentration in all three cultivars.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- NaCl concentratione0
- Outcome
- Proline content and soluble carbohydratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline content and soluble carbohydrate were increased in all of the three cultivars with enhance of NaCl concentration”
t0“barley (Hordeum vulgare L.)”
Claim · model-written summary
Under increasing salinity, Nosrat accumulated more leaf proline and soluble sugar than the other cultivars.
- Taxon
- barleyHordeum vulgaret0
- Material
- Nosrate0
- Organ / stage
- leavese0
- Outcome
- accumulation of proline and soluble sugar contente0
- Direction
- moree0
- Comparator
- other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By increasing of salinity stress accumulation of proline and soluble sugar content in leaves of Nosrat cultivar was more than other cultivars”
t0“barley (Hordeum vulgare L.)”
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