Abstract
The germination response to NaCl treatments (0, 67, 134, 201 and 268 mol m-3) was investigated in 6 natural populations of Stylosanthes humilis from 3 ecogeographic regions of Pernambuco State, north-east Brazil. In general, salt tolerance was high, with percentage germination unaltered up to 67 mol m-3 NaCl in 2 populations and unaltered up to 134 mol m-3 NaCl in the remaining 4. The estimated concentration which reduced percentage germination to 50% varied between populations from 200 to 295 mol m-3 NaCl. Salt affected germination rate even more than it did the germination percentage, being altered at 67 mol m-3 NaCl in all populations. The germination rate was reduced to 50% in the range of 131-176 mol m-3 NaCl. There was a significant variation in salt tolerance between these natural populations, and no relation was found between salt tolerance of the populations and the aridity of their provenance.
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Claims 8
Claim · model-written summary
Germination remained unchanged to 67 mol m-3 NaCl in two populations.
- Taxon
- Stylosanthes humilis
Stylosanthes humilist0 - Treatment
- 67 mol m-3 NaCle0
- Outcome
- percentage germinatione0
- Direction
- unalterede0
- Value
- 67 mol m-3e0
- Qualifier
- 2 populationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percentage germination unaltered up to 67 mol m-3 NaCl in 2 populations”
t0“Stylosanthes humilis”
Claim · model-written summary
Germination remained unchanged to 134 mol m-3 NaCl in four populations.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Treatment
- 134 mol m-3 NaCle0
- Outcome
- unalterede0
- Direction
- unalterede0
- Value
- 134 mol m-3e0
- Qualifier
- remaining 4e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“unaltered up to 134 mol m-3 NaCl in the remaining 4.”
t0“Stylosanthes humilis”
Claim · model-written summary
The concentration halving germination percentage varied from 200 to 295 mol m-3 NaCl.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Outcome
- percentage germinatione0
- Direction
- reducede0
- Value
- 200 to 295 mol m-3e0
- Qualifier
- to 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The estimated concentration which reduced percentage germination to 50% varied between populations from 200 to 295 mol m-3 NaCl.”
t0“Stylosanthes humilis”
Claim · model-written summary
Salt affected germination rate more than germination percentage.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Outcome
- germination ratee0
- Direction
- moree0
- Comparator
- germination percentagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt affected germination rate even more than it did the germination percentage”
t0“Stylosanthes humilis”
Claim · model-written summary
Germination rate changed at 67 mol m-3 NaCl in all populations.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Treatment
- 67 mol m-3 NaCle0
- Outcome
- alterede0
- Qualifier
- all populationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“being altered at 67 mol m-3 NaCl in all populations.”
t0“Stylosanthes humilis”
Claim · model-written summary
Germination rate fell by half at 131-176 mol m-3 NaCl.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Treatment
- 131-176 mol m-3 NaCle0
- Outcome
- germination ratee0
- Direction
- reducede0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The germination rate was reduced to 50% in the range of 131-176 mol m-3 NaCl.”
t0“Stylosanthes humilis”
Claim · model-written summary
Salt tolerance varied significantly between populations.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Material
- natural populationse0
- Outcome
- salt tolerancee0
- Direction
- variatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant variation in salt tolerance between these natural populations”
t0“Stylosanthes humilis”
Claim · model-written summary
Salt tolerance was unrelated to provenance aridity.
- Taxon
- Stylosanthes humilisStylosanthes humilist0
- Outcome
- salt tolerancee0
- Direction
- no relatione0
- Setting
- aridity of their provenancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no relation was found between salt tolerance of the populations and the aridity of their provenance.”
t0“Stylosanthes humilis”