Abstract
In order to study of the effect of priming and salinity on physiological and chemical characteristics of wheat(Triticum aestivum L.), an experiment was carried out at the Experimental Farm of Shiraz University. Results showedthat primed plants significantly reduced its gas exchanges by accelerating senescence under a series of salt stress,which became more serious along with the increasing of salt concentrations, especially at 21 d after anthesis. Undereach level of salt stress, dry matter accumulation of primed plants was always higher than the non-primed plants.Primed plants had higher potassium selectivity against sodium than non-primed plants with the former could maintainrelatively stable balance of ions, potassium/sodium was found not to be the limited factor for salt tolerant plants, butit was in salt-sensitive plants. Net photosynthesis (Pn) significantly positively correlated with leaf potassium/sodium(K+/Na+), relative water content (RWC), and leaf area duration (P < 0.01). So those four parameters might be idealcriterions of salt tolerance in wheat. In conclusion, salt stresses caused significant declines in growth period of wheatby accelerating leaf senescence at reproductive stage. Primed plants of wheat successfully preserved normal growthby maintaining Pn, K+/Na+, leaf area duration (LAD) and dry matter accumulation (DMA), while non-primed plantsdecreased considerably in those parameters. The improvement of photosynthesis and related traits in reproductivestage was a key to the growth of wheat under saline conditions.
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Claims 8
Claim · model-written summary
Primed wheat plants significantly reduced gas exchanges by accelerating senescence under a series of salt stress.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- salt stresse1
- Outcome
- gas exchangese1
- Direction
- reducede1
- Qualifier
- primed plantse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“primed plants significantly reduced its gas exchanges by accelerating senescence under a series of salt stress”
Claim · model-written summary
Salt stresses caused significant declines in growth period of wheat.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- salt stressese1
- Outcome
- growth periode1
- Direction
- declinese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“salt stresses caused significant declines in growth period of wheat”
Claim · model-written summary
Dry matter accumulation of primed wheat plants was always higher than that of non-primed plants under each salt stress level.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- primed plantse1
- Outcome
- dry matter accumulatione1
- Direction
- highere1
- Comparator
- non-primed plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“dry matter accumulation of primed plants was always higher than the non-primed plants”
Claim · model-written summary
Primed wheat plants had higher potassium selectivity against sodium than non-primed plants.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Primed plantse1
- Outcome
- potassium selectivity against sodiume1
- Direction
- highere1
- Comparator
- non-primed plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“Primed plants had higher potassium selectivity against sodium than non-primed plants”
Claim · model-written summary
Potassium/sodium was found not to be a limiting factor for salt tolerant plants.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- potassium/sodium was found not to be the limited factore1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“potassium/sodium was found not to be the limited factor for salt tolerant plants”
Claim · model-written summary
Net photosynthesis significantly positively correlated with leaf K+/Na+, relative water content and leaf area duration (P < 0.01).
- Taxon
- WheatTriticum aestivumt0
- Compound
- leaf potassium/sodium(K+/Na+)e1
- Outcome
- Net photosynthesis (Pn)e1
- Direction
- positively correlatede1
- Qualifier
- relative water content (RWC), and leaf area duratione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“Net photosynthesis (Pn) significantly positively correlated with leaf potassium/sodium(K+/Na+), relative water content (RWC), and leaf area duration”
Claim · model-written summary
The authors suggest the four parameters might be ideal criteria of salt tolerance in wheat.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- salt tolerancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“salt tolerance in wheat”
Claim · model-written summary
The improvement of photosynthesis and related traits was a key to the growth of wheat under saline conditions.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- saline conditionse1
- Outcome
- growthe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“key to the growth of wheat under saline conditions”
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