Abstract
To understand the differential effect of moderate salinity on the growth and ion contents in mainstem and subtillers of wheat plants, two spring wheat (Triticum aestivum L.) genotypes (Sakha 8 and Thasos) were grown in a greenhouse in soil with or without salinity. Both the above-ground dry weight and the leaf area at day 55 after sowing, as well as the grain yield, grain number, spikelet number, straw dry weight and above-ground dry weight at plant maturity, were determined. Inorganic ion content in young leaves at day 55 after sowing was also analyzed. The results showed that the above-ground dry weight and leaf area in the subtillers (T1 and T2) at day 55 after sowing were greatly reduced by salinity. Compared with the effect of salinity on subtiller growth, the mainstem was much less affected during the vegetative growth stages, whereas there was a similar effect of salinity on the grain yield between the mainstem and subtillers. The reduction in the grain yield of Sakha 8 by moderate salinity mainly resulted from a decrease in the number of tillers, whereas in addition to a reduction in the number of tillers in the salt-sensitive genotype Thasos, the grain yield in mainstem and subtillers was further reduced during the grain filling. Both wheat genotypes are more sensitive to salt stress during the vegetative growth stages than in the reproductive stages. The salt-tolerant genotype Sakha 8 is characterized by the exclusion of Na + in the leaves. Thus, under moderate saline conditions the greater reduction in subtillers may result from an ion imbalance in the salt-tolerant genotype Sakha 8 and from Na + toxicity in the salt-sensitive genotype Thasos.
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Claims 10
Claim · model-written summary
Salinity greatly reduced subtiller dry weight and leaf area at day 55.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- subtillers (T1 and T2)e1
- Treatment
- salinitye1
- Outcome
- above-ground dry weight and leaf areae1
- Direction
- greatly reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat plants”
e1“the above-ground dry weight and leaf area in the subtillers (T1 and T2) at day 55 after sowing were greatly reduced by salinity”
Claim · model-written summary
Vegetative mainstem growth was less affected by salinity than subtiller growth.
- Taxon
- wheatTriticum aestivume0
- Treatment
- salinitye1
- Outcome
- mainsteme1
- Direction
- much less affectede1
- Comparator
- subtiller growthe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat plants”
e1“Compared with the effect of salinity on subtiller growth, the mainstem was much less affected during the vegetative growth stages”
Claim · model-written summary
Salinity affected mainstem and subtiller grain yield similarly.
- Taxon
- wheatTriticum aestivume0
- Treatment
- salinitye1
- Outcome
- grain yielde1
- Direction
- similar effecte1
- Comparator
- between the mainstem and subtillerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat plants”
e1“there was a similar effect of salinity on the grain yield between the mainstem and subtillers”
Claim · model-written summary
In Sakha 8, moderate salinity reduced grain yield mainly through fewer tillers.
- Taxon
- wheatTriticum aestivume0
- Material
- Sakha 8e1
- Treatment
- moderate salinitye1
- Outcome
- grain yielde1
- Direction
- reductione1
- Qualifier
- decrease in the number of tillerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat plants”
e1“The reduction in the grain yield of Sakha 8 by moderate salinity mainly resulted from a decrease in the number of tillers”
Claim · model-written summary
In Thasos, fewer tillers contributed to reduced grain yield under salinity.
- Taxon
- wheatTriticum aestivume0
- Material
- Thasose1
- Outcome
- grain yielde1
- Qualifier
- reduction in the number of tillerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat plants”
e1“in addition to a reduction in the number of tillers in the salt-sensitive genotype Thasos, the grain yield in mainstem and subtillers was further reduced during the grain filling”
Claim · model-written summary
Thasos mainstem and subtiller grain yield was further reduced during grain filling.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- mainstem and subtillerse1
- Outcome
- grain yielde1
- Direction
- further reducede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat plants”
e1“the grain yield in mainstem and subtillers was further reduced during the grain filling”
Claim · model-written summary
Both wheat genotypes were more salt sensitive in vegetative than reproductive growth.
- Taxon
- wheatTriticum aestivume0
- Outcome
- sensitive to salt stresse0
- Direction
- more sensitivee0
- Comparator
- reproductive stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both wheat genotypes are more sensitive to salt stress during the vegetative growth stages than in the reproductive stages.”
Claim · model-written summary
Salt tolerant Sakha 8 excluded sodium from leaves.
- Taxon
- wheatTriticum aestivume0
- Material
- Sakha 8e1
- Outcome
- exclusion of Na + in the leavese1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat genotypes”
e1“The salt-tolerant genotype Sakha 8 is characterized by the exclusion of Na + in the leaves.”
Claim · model-written summary
Under moderate salinity, ion imbalance may explain greater subtiller reduction in Sakha 8.
- Taxon
- wheatTriticum aestivume0
- Material
- Sakha 8e1
- Outcome
- greater reduction in subtillerse1
- Qualifier
- ion imbalancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat genotypes”
e1“under moderate saline conditions the greater reduction in subtillers may result from an ion imbalance in the salt-tolerant genotype Sakha 8”
Claim · model-written summary
Under moderate salinity, sodium toxicity may explain greater subtiller reduction in Thasos.
- Taxon
- wheatTriticum aestivume0
- Material
- Thasose1
- Outcome
- greater reduction in subtillerse1
- Qualifier
- Na + toxicitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat genotypes”
e1“the greater reduction in subtillers may result from an ion imbalance in the salt-tolerant genotype Sakha 8 and from Na + toxicity in the salt-sensitive genotype Thasos”
The same questions in other papers
salinity · growth · Triticum aestivum (wheat)Positive and negative results
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