Abstract
The effects of salt-alkaline mixed stress on switchgrass were investigated by evaluating seed germination and the proline, malondialdehyde (MDA) and soluble sugar contents in three switchgrass (Panicum virgatum L.) cultivars in order to identify which can be successfully produced on marginal lands affected by salt-alkaline mixed stress. The experimental conditions consisted of four levels of salinity (10, 60, 110 and 160 mM) and four pH levels (7.1, 8.3, 9.5 and 10.7). The effects of salt-alkaline mixed stress with equivalent coupling of the salinity and pH level on the switchgrass were explored via model analyses. Switchgrass was capable of germinating and surviving well in all treatments under low-alkaline pH (pH≤8.3), regardless of the salinity. However, seed germination and seedling growth were sharply reduced at higher pH values in conjunction with salinity. The salinity and pH had synergetic effects on the germination percentage, germination index, plumular length and the soluble sugar and proline contents in switchgrass. However, these two factors exhibited antagonistic effects on the radicular length of switchgrass. The combined effects of salinity and pH and the interactions between them should be considered when evaluating the strength of salt-alkaline mixed stress.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Switchgrass germinated and survived well at pH no greater than 8.3 across salinities.
- Taxon
- switchgrass
Panicum virgatumt0 - Treatment
- low-alkaline pH (pH≤8.3)e0
- Outcome
- germinating and surviving welle0
- Qualifier
- regardless of the salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Switchgrass was capable of germinating and surviving well in all treatments under low-alkaline pH (pH≤8.3), regardless of the salinity”
t0“Switchgrass (Panicum virgatum L.)”
Claim · model-written summary
Higher pH with salinity sharply reduced seed germination and seedling growth.
- Taxon
- switchgrassPanicum virgatumt0
- Treatment
- higher pH values in conjunction with salinitye0
- Outcome
- seed germination and seedling growthe0
- Direction
- sharply reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed germination and seedling growth were sharply reduced at higher pH values in conjunction with salinity”
t0“Switchgrass (Panicum virgatum L.)”
Claim · model-written summary
Salinity and pH interacted synergistically for germination percentage.
- Taxon
- switchgrassPanicum virgatumt0
- Treatment
- salinity and pHe0
- Outcome
- germination percentagee0
- Direction
- synergetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salinity and pH had synergetic effects on the germination percentage, germination index, plumular length and the soluble sugar and proline contents in switchgrass”
t0“Switchgrass (Panicum virgatum L.)”
Claim · model-written summary
Salinity and pH interacted synergistically for germination index.
- Taxon
- switchgrassPanicum virgatumt0
- Treatment
- salinity and pHe0
- Outcome
- germination indexe0
- Direction
- synergetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salinity and pH had synergetic effects on the germination percentage, germination index, plumular length and the soluble sugar and proline contents in switchgrass”
t0“Switchgrass (Panicum virgatum L.)”
Claim · model-written summary
Salinity and pH interacted synergistically for plumular length.
- Taxon
- switchgrassPanicum virgatumt0
- Treatment
- salinity and pHe0
- Outcome
- plumular lengthe0
- Direction
- synergetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salinity and pH had synergetic effects on the germination percentage, germination index, plumular length and the soluble sugar and proline contents in switchgrass”
t0“Switchgrass (Panicum virgatum L.)”
Claim · model-written summary
Salinity and pH interacted synergistically for soluble sugar and proline contents.
- Taxon
- switchgrassPanicum virgatumt0
- Treatment
- salinity and pHe0
- Outcome
- soluble sugar and proline contentse0
- Direction
- synergetic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salinity and pH had synergetic effects on the germination percentage, germination index, plumular length and the soluble sugar and proline contents in switchgrass”
t0“Switchgrass (Panicum virgatum L.)”
Claim · model-written summary
Salinity and pH interacted antagonistically for radicular length.
- Taxon
- switchgrassPanicum virgatumt0
- Treatment
- these two factorse0
- Outcome
- radicular lengthe0
- Direction
- antagonistic effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these two factors exhibited antagonistic effects on the radicular length of switchgrass”
t0“Switchgrass (Panicum virgatum L.)”
The same questions in other papers
salinity · growth · Panicum virgatum (switchgrass)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
3 papers more in this group
See all 7 papers →ph · growth · Panicum virgatum (switchgrass)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.