Abstract
Wheat is affected by various biotic and abiotic stresses, especially salinity, which reduces the growth and yield drastically. With this view, an experiment was conducted to observe genotypic differences in agro-morphological, yield, and biochemical responses to salinity. Experimental variables consisted of five salt-tolerant genotypes (G 13, G 20-1, G 9, G 22, G 20-2), one susceptible genotype (G 24) and one standard check variety (BARI ghom 25), which assigned to four levels of salinity with electrical conductivities 0, 4, 8 and 12 dS m−1. Irrespective of genotypes, salinity stress significantly decreased the yield and yield attributes. However, maximum total tillers plant−1, effective tillers plant−1, number of grains spike−1, and grain yield plant−1 was found in salt tolerant genotype G 20-2, followed by genotypes G 13, G 20-1, and the lowest was observed in salt-susceptible genotype G 24. The lowest reduction percentage of yield and yield attributes were also observed in salt tolerant genotype G 20-2 followed by genotypes G 13, G 20-2, and the maximum reduction percentage was found in salt-susceptible genotype G 24. Results showed that the highest amount of proline, glycinebetaine, soluble sugar and soluble protein content were observed in salt-tolerant genotype G 20-2, followed by genotypes G 13, G 20-1, and the minimum was found in salt-susceptible genotype G 24. On the other hand, the lowest hydrogen peroxide (H2O2) and melondealdehyde (MDA) accumulation was detected in the same salt-tolerant genotype G 20-2, followed by G 13, G 20-1, and the maximum was observed in salt-susceptible genotype G 24. Therefore, higher accumulations of compatible solute in the tolerant genotypes reduce the oxidative stress, and provide the higher yield.
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Claims 6
Claim · model-written summary
Salinity significantly reduced yield and yield attributes.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- salinity stresse0
- Outcome
- yield and yield attributese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrespective of genotypes, salinity stress significantly decreased the yield and yield attributes.”
t0“Wheat”
Claim · model-written summary
G 20-2 had the maximum tiller, grain number and grain yield traits, while G 24 had the lowest.
- Taxon
- WheatTriticum aestivumt0
- Material
- G 20-2e0
- Outcome
- total tillers plant−1, effective tillers plant−1, number of grains spike−1, and grain yield plant−1e0
- Direction
- maximume0
- Comparator
- G 24e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, maximum total tillers plant−1, effective tillers plant−1, number of grains spike−1, and grain yield plant−1 was found in salt tolerant genotype G 20-2, followed by genotypes G 13, G 20-1, and the lowest was observed in salt-susceptible genotype G 24.”
t0“Wheat”
Claim · model-written summary
G 20-2 had the lowest proportional yield losses under salinity and G 24 the highest.
- Taxon
- WheatTriticum aestivumt0
- Material
- G 20-2e0
- Outcome
- reduction percentage of yield and yield attributese0
- Direction
- loweste0
- Comparator
- G 24e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest reduction percentage of yield and yield attributes were also observed in salt tolerant genotype G 20-2 followed by genotypes G 13, G 20-2, and the maximum reduction percentage was found in salt-susceptible genotype G 24.”
t0“Wheat”
Claim · model-written summary
G 20-2 had the highest compatible solute and protein contents, while G 24 had the least.
- Taxon
- WheatTriticum aestivumt0
- Material
- G 20-2e0
- Outcome
- proline, glycinebetaine, soluble sugar and soluble protein contente0
- Direction
- higheste0
- Comparator
- G 24e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that the highest amount of proline, glycinebetaine, soluble sugar and soluble protein content were observed in salt-tolerant genotype G 20-2, followed by genotypes G 13, G 20-1, and the minimum was found in salt-susceptible genotype G 24.”
t0“Wheat”
Claim · model-written summary
G 20-2 had the least hydrogen peroxide and MDA accumulation; G 24 had the most.
- Taxon
- WheatTriticum aestivumt0
- Material
- G 20-2e0
- Outcome
- hydrogen peroxide (H2O2) and melondealdehyde (MDA) accumulatione0
- Direction
- loweste0
- Comparator
- G 24e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, the lowest hydrogen peroxide (H2O2) and melondealdehyde (MDA) accumulation was detected in the same salt-tolerant genotype G 20-2, followed by G 13, G 20-1, and the maximum was observed in salt-susceptible genotype G 24.”
t0“Wheat”
Claim · model-written summary
The authors attribute lower oxidative stress and greater yield to compatible solute accumulation in tolerant genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- tolerant genotypese0
- Outcome
- oxidative stresse0
- Direction
- reducee0
- Qualifier
- higher accumulations of compatible solutee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, higher accumulations of compatible solute in the tolerant genotypes reduce the oxidative stress, and provide the higher yield.”
t0“Wheat”
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salinity · yield · Triticum aestivum (wheat)Positive and negative results
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