Abstract
In order to study the effect of NaCl salinity on wheat genetic structure and gene action, F1, BC1P1, BC1P2, F2, and F3 generations were produced in the greenhouse by crossing a sensitive bread wheat cultivar (Arta) with the salt tolerant (Bam) parent. A split plot experiment was conducted in greenhouse based on randomized complete block design at 0, 125 and 250 mM NaCl in the sand culture. The three salinity levels (0, 125 and 250 mM NaCl) were arranged as the main plots and seven generations were included in the subplots. Agronomic traits including plant height and shoot biomass together with physiological traits such as KNa -1 discrimination ratio and electrolyte leakage were measured. Regression method was used to estimate the effects and variances. Generation means were reduced for all traits in the salt stress condition except for electrolyte leakage which was increased in this environment. Only additive effects were present for plant height at 125 mM NaCl and for KNa -1 at 250 mM NaCl. Furthermore, both additive effects and additive by additive epistasis governed the control of plant height at the non-saline condition. High broad sense heritability and moderate narrow sense heritability were observed for most of the measured traits under different salinity levels. In conclusion, the notable amount of heritable variation obtained for several characters, especially KNa -1 , suggest the possibility of developing genotypes having suitable agronomic characters and the traits related to salt tolerance in the F2 population under study.
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Claims 8
Claim · model-written summary
Salt stress reduced wheat generation means for plant height, shoot biomass and KNa -1 discrimination ratio.
- Taxon
- bread wheat
Triticum aestivumt0 - Treatment
- salt stress conditione1
- Outcome
- plant height and shoot biomass together with physiological traits such as KNa -1 discrimination ratioe0
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agronomic traits including plant height and shoot biomass together with physiological traits such as KNa -1 discrimination ratio and electrolyte leakage were measured.”
e1“Generation means were reduced for all traits in the salt stress condition except for electrolyte leakage which was increased in this environment.”
t0“bread wheat”
Claim · model-written summary
Salt stress increased wheat electrolyte leakage.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- salt stress conditione0
- Outcome
- electrolyte leakagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generation means were reduced for all traits in the salt stress condition except for electrolyte leakage which was increased in this environment.”
t0“bread wheat”
Claim · model-written summary
Only additive genetic effects were present for wheat plant height at 125 mM NaCl.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- 125 mM NaCle0
- Outcome
- Only additive effectse0
- Qualifier
- plant height at 125 mM NaCle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only additive effects were present for plant height at 125 mM NaCl and for KNa -1 at 250 mM NaCl.”
t0“bread wheat”
Claim · model-written summary
Only additive genetic effects were present for wheat KNa -1 at 250 mM NaCl.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- 250 mM NaCle0
- Outcome
- Only additive effectse0
- Qualifier
- KNa -1 at 250 mM NaCle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only additive effects were present for plant height at 125 mM NaCl and for KNa -1 at 250 mM NaCl.”
t0“bread wheat”
Claim · model-written summary
Additive effects and additive-by-additive epistasis controlled wheat plant height under non-saline conditions.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- non-saline conditione0
- Outcome
- plant heighte0
- Qualifier
- both additive effects and additive by additive epistasise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, both additive effects and additive by additive epistasis governed the control of plant height at the non-saline condition.”
t0“bread wheat”
Claim · model-written summary
Most wheat traits had high broad-sense heritability across salinity levels.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- broad sense heritabilitye0
- Direction
- Highe0
- Qualifier
- most of the measured traits under different salinity levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High broad sense heritability and moderate narrow sense heritability were observed for most of the measured traits under different salinity levels.”
t0“bread wheat”
Claim · model-written summary
Most wheat traits had moderate narrow-sense heritability across salinity levels.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- narrow sense heritabilitye0
- Qualifier
- moderate narrow sense heritabilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High broad sense heritability and moderate narrow sense heritability were observed for most of the measured traits under different salinity levels.”
t0“bread wheat”
Claim · model-written summary
Heritable variation, especially for KNa -1, suggests potential to develop agronomically suitable salt-tolerant genotypes from the studied F2 population.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- F2 populatione0
- Outcome
- developing genotypes having suitable agronomic characters and the traits related to salt tolerancee0
- Qualifier
- suggest the possibilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the notable amount of heritable variation obtained for several characters, especially KNa -1 , suggest the possibility of developing genotypes having suitable agronomic characters and the traits related to salt tolerance in the F2 population under study.”
t0“bread wheat”
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