Abstract
Switchgrass tolerates nutrient and water limitations; however, high salt concentrations may inhibit its production. Therefore, the salt tolerance potential of switchgrass needs to be enhanced for economic production. The objective of this study was to determine the differences within and between two lowland cultivars of switchgrass for growth, stomatal morphology, photosynthetic pigments content, and mineral traits. A greenhouse study was conducted on 18 sublines, derived from the cultivars Alamo (A) and Kanlow (K), plus a salt-tolerant and sensitivity check (20 genotypes). A split-plot randomized complete block design was used with three replications per treatment (0, 5, 10, and 20 dS m−1 NaCl). High salt concentrations (10 and 20 dS m−1 NaCl) reduced shoot biomass, stem diameter, and plant height up to 21, 11, and 16%, respectively, compared to the control for all genotypes (p < 0.05). Chlorophyll a and adaxial stomata width were moderately correlated with growth traits under saline conditions (r = 0.49 to 0.56, p < 0.05). The sublines 12A-227, TN13006-04, 12A-259, 12K-247, and TN13009-08 had better growth and accumulated less salt in shoot biomass than both checks. These results indicate that differences exist within and between the Alamo and Kanlow sublines, and it is possible to breed improved cultivars with increased salt tolerance.
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Claims 8
Claim · model-written summary
High salt concentrations reduced shoot biomass in switchgrass by up to 21% relative to the control.
- Taxon
- Switchgrass
Panicum virgatume0 - Treatment
- 10 and 20 dS m−1 NaCle1
- Outcome
- shoot biomasse1
- Direction
- reducede1
- Value
- 21e1
- Comparator
- controle1
- Setting
- greenhousee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e1“High salt concentrations (10 and 20 dS m−1 NaCl) reduced shoot biomass, stem diameter, and plant height up to 21, 11, and 16%, respectively, compared to the control for all genotypes (p < 0.05)”
e2“A greenhouse study was conducted on 18 sublines”
Claim · model-written summary
High salt concentrations reduced stem diameter in switchgrass by up to 11% relative to the control.
- Taxon
- SwitchgrassPanicum virgatume0
- Treatment
- 10 and 20 dS m−1 NaCle1
- Outcome
- stem diametere1
- Direction
- reducede1
- Value
- 11e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e1“High salt concentrations (10 and 20 dS m−1 NaCl) reduced shoot biomass, stem diameter, and plant height up to 21, 11, and 16%, respectively, compared to the control for all genotypes (p < 0.05)”
Claim · model-written summary
High salt concentrations reduced plant height in switchgrass by up to 16% relative to the control.
- Taxon
- SwitchgrassPanicum virgatume0
- Treatment
- 10 and 20 dS m−1 NaCle1
- Outcome
- plant heighte1
- Direction
- reducede1
- Value
- 16e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e1“High salt concentrations (10 and 20 dS m−1 NaCl) reduced shoot biomass, stem diameter, and plant height up to 21, 11, and 16%, respectively, compared to the control for all genotypes (p < 0.05)”
Claim · model-written summary
Chlorophyll a and adaxial stomata width were moderately correlated with growth traits under saline conditions.
- Taxon
- SwitchgrassPanicum virgatume0
- Treatment
- saline conditionse3
- Outcome
- growth traitse3
- Direction
- moderately correlatede3
- Value
- r = 0.49 to 0.56e3
- Qualifier
- Chlorophyll a and adaxial stomata widthe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e3“Chlorophyll a and adaxial stomata width were moderately correlated with growth traits under saline conditions (r = 0.49 to 0.56, p < 0.05)”
Claim · model-written summary
Sublines 12A-227, TN13006-04, 12A-259, 12K-247 and TN13009-08 had better growth than both checks.
- Taxon
- SwitchgrassPanicum virgatume0
- Material
- 12A-227, TN13006-04, 12A-259, 12K-247, and TN13009-08e4
- Outcome
- growthe4
- Direction
- bettere4
- Comparator
- both checkse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e4“The sublines 12A-227, TN13006-04, 12A-259, 12K-247, and TN13009-08 had better growth and accumulated less salt in shoot biomass than both checks”
Claim · model-written summary
Sublines 12A-227, TN13006-04, 12A-259, 12K-247 and TN13009-08 accumulated less salt in shoot biomass than both checks.
- Taxon
- SwitchgrassPanicum virgatume0
- Material
- 12A-227, TN13006-04, 12A-259, 12K-247, and TN13009-08e4
- Outcome
- salt in shoot biomasse4
- Direction
- lesse4
- Comparator
- both checkse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e4“The sublines 12A-227, TN13006-04, 12A-259, 12K-247, and TN13009-08 had better growth and accumulated less salt in shoot biomass than both checks”
Claim · model-written summary
Differences in salt tolerance exist within and between the Alamo and Kanlow switchgrass sublines.
- Taxon
- SwitchgrassPanicum virgatume0
- Material
- the Alamo and Kanlow sublinese5
- Outcome
- differences exist within and between the Alamo and Kanlow sublinese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e5“These results indicate that differences exist within and between the Alamo and Kanlow sublines, and it is possible to breed improved cultivars with increased salt tolerance”
Claim · model-written summary
Breeding improved switchgrass cultivars with increased salt tolerance is possible.
- Taxon
- SwitchgrassPanicum virgatume0
- Outcome
- breed improved cultivars with increased salt tolerancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass tolerates nutrient and water limitations”
e5“These results indicate that differences exist within and between the Alamo and Kanlow sublines, and it is possible to breed improved cultivars with increased salt tolerance”
The same questions in other papers
sodium chloride · growth · Panicum virgatum (switchgrass)Results differ
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- no effect
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.