Abstract
In most southern provinces of Iran, salinity is a growing problem particularly in irrigated agricultural areas with rising water tables, poor water quality and/or deficient soil drainage. To investigate the effects of sodium chloride on two barley cultivars, four levels of salinity: 0, 4, 8 and 12 dS/m, were employed as a factorial experiment arranged in a randomized complete block design with four replications in a controlled environment of the greenhouse during 2008 to 2009. The results indicated that increasing salinity from 0 to 12 dS/m, decreased the emergence percentage, significantly. The two cultivars (Fajr30 and Reyhan) responded differently to salinity, so that Fajr30 showed a significantly higher emergence rate. This cultivar (Fajr30) also had greater shoot potassium content. The number of tillers and leaves per plant and also the plant height were decreased upon increasing salinity level. The shoot sodium content was also increased by increasing the salinity level in both cultivars; however, the sodium content of Fajr30 cultivar, compared to Reyhan cultivar, was lower, probably due to Na+ exclusion mechanisms in this cultivar. The results also revealed that, the highest grain number and phytomass was obtained from Fajr30 cultivar at the lowest salinity level. Phytomass and grain yield were also decreased upon salinity, significantly. Overall, it appeared that less adverse effect of salinity on Fajr30 cultivar, may indicate that this cultivar might be suitable for saline soils, an object which is worth more investigations. Key words: Salinity, yield components, barley, sodium, potassium.
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Claims 10
Claim · model-written summary
Raising salinity from 0 to 12 dS/m significantly decreased barley emergence percentage.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- salinity from 0 to 12 dS/me0
- Outcome
- emergence percentagee0
- Direction
- decreasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The results indicated that increasing salinity from 0 to 12 dS/m, decreased the emergence percentage, significantly.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Fajr30 had a significantly higher emergence rate than Reyhan under salinity.
- Taxon
- barleyHordeum vulgaret0
- Material
- Fajr30e0
- Outcome
- emergence ratee0
- Direction
- highere0
- Comparator
- Reyhane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two cultivars (Fajr30 and Reyhan) responded differently to salinity, so that Fajr30 showed a significantly higher emergence rate.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Fajr30 had greater shoot potassium content.
- Taxon
- barleyHordeum vulgaret0
- Material
- Fajr30e0
- Outcome
- shoot potassium contente0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This cultivar (Fajr30) also had greater shoot potassium content.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Increasing salinity decreased barley tiller and leaf numbers and plant height.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- increasing salinity levele0
- Outcome
- number of tillers and leaves per plant and also the plant heighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of tillers and leaves per plant and also the plant height were decreased upon increasing salinity level.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Increasing salinity raised shoot sodium content in both cultivars.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- increasing the salinity levele0
- Outcome
- shoot sodium contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot sodium content was also increased by increasing the salinity level in both cultivars”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Fajr30 had lower sodium content than Reyhan.
- Taxon
- barleyHordeum vulgaret0
- Material
- Fajr30e0
- Outcome
- sodium contente0
- Direction
- lowere0
- Comparator
- Reyhane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sodium content of Fajr30 cultivar, compared to Reyhan cultivar, was lower”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
The authors suggested Na+ exclusion as a possible reason for lower Fajr30 sodium content.
- Taxon
- barleyHordeum vulgaret0
- Material
- Fajr30e0
- Outcome
- sodium contente0
- Qualifier
- Na+ exclusion mechanismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sodium content of Fajr30 cultivar, compared to Reyhan cultivar, was lower, probably due to Na+ exclusion mechanisms in this cultivar.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Fajr30 at the lowest salinity had the highest grain number and phytomass.
- Taxon
- barleyHordeum vulgaret0
- Material
- Fajr30e0
- Outcome
- grain number and phytomasse0
- Direction
- higheste0
- Qualifier
- lowest salinity levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest grain number and phytomass was obtained from Fajr30 cultivar at the lowest salinity level.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Salinity significantly decreased barley phytomass and grain yield.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- salinitye0
- Outcome
- Phytomass and grain yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phytomass and grain yield were also decreased upon salinity, significantly.”
t0“cultivated barley ( Hordeum vulgare L.)”
Claim · model-written summary
Fajr30 may be suitable for saline soils because salinity had less adverse effect on it.
- Taxon
- barleyHordeum vulgaret0
- Material
- Fajr30e0
- Outcome
- suitable for saline soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“less adverse effect of salinity on Fajr30 cultivar, may indicate that this cultivar might be suitable for saline soils”
t0“cultivated barley ( Hordeum vulgare L.)”
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