Abstract
The frequent saline and high moisture environments associated with high elevation hay meadows prohibit the use of most forage legume species. Ruby Valley pointvetch ( Oxytropis riparia Litv.) has been observed in saline and wet meadows in Southwestern Montana. Our objectives were to evaluate the sensitivity of pointvetch germination to temperature and osmotic stress levels. Seven constant germination temperatures ranged from 5 to 35°C. The NaCl and PEG‐imposed stress levels ranged from 0.0 to −3.0 MPa with intervals of −0.5 MPa. Hard seed content ranged from 87 to 96%, depending on seed lot. Germination of pointvetch was maximal between 10 and 30°C compared to 5 to 30°C for alfalfa ( Medicago sativa L.). Pointvetch has the capability for over 90% germination in −2.0 MPa NaCl solutions, while alfalfa germination was reduced 70% below the control values by −1.0 MPa NaCl media. Pointvetch germination in PEG 8000 solutions was unaffected by solution potentials down to −1.5 MPa. Alfalfa germination responded similarly to NaCl and PEG‐imposed osmotic stress, while pointvetch germination was less affected by NaCl than by PEG‐imposed stress. The germination tolerance of pointvetch to osmotic and salt stress is unique and warrants further study.
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Claims 8
Claim · model-written summary
Hard seed content of Oxytropis riparia was 87 to 96%, depending on seed lot.
- Taxon
- Oxytropis riparia
Oxytropis ripariat0 - Outcome
- Hard seed contente1
- Value
- 87 to 96%e1
- Qualifier
- depending on seed lote1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ruby Valley Pointvetch (Oxytropis riparia Litv.)”
e1“Hard seed content ranged from 87 to 96%, depending on seed lot”
Claim · model-written summary
Germination of Oxytropis riparia was maximal between 10 and 30 °C, compared with 5 to 30 °C for alfalfa.
- Taxon
- Oxytropis ripariaOxytropis ripariat0
- Treatment
- constant germination temperaturese0
- Outcome
- Germinatione2
- Direction
- maximale2
- Value
- 10 and 30°Ce2
- Comparator
- alfalfae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ruby Valley Pointvetch (Oxytropis riparia Litv.)”
e0“Seven constant germination temperatures ranged from 5 to 35°C”
e2“Germination of pointvetch was maximal between 10 and 30°C compared to 5 to 30°C for alfalfa”
Claim · model-written summary
Oxytropis riparia kept over 90% germination in −2.0 MPa NaCl solutions.
- Taxon
- Oxytropis ripariaOxytropis ripariat0
- Treatment
- −2.0 MPa NaCl solutionse3
- Outcome
- germinatione3
- Value
- over 90%e3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ruby Valley Pointvetch (Oxytropis riparia Litv.)”
e3“Pointvetch has the capability for over 90% germination in −2.0 MPa NaCl solutions”
Claim · model-written summary
Alfalfa germination was reduced 70% below control values at −1.0 MPa NaCl.
- Taxon
- alfalfa
Medicago sativae4 - Treatment
- −1.0 MPa NaCl mediae4
- Outcome
- germinatione4
- Direction
- reducede4
- Value
- 70%e4
- Comparator
- control valuese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“alfalfa germination was reduced 70% below the control values by −1.0 MPa NaCl media”
Claim · model-written summary
Oxytropis riparia germination in PEG 8000 solutions was unaffected down to −1.5 MPa.
- Taxon
- Oxytropis ripariaOxytropis ripariat0
- Treatment
- PEG 8000 solutionse5
- Outcome
- germinatione5
- Direction
- unaffectede5
- Qualifier
- solution potentials down to −1.5 MPae5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ruby Valley Pointvetch (Oxytropis riparia Litv.)”
e5“Pointvetch germination in PEG 8000 solutions was unaffected by solution potentials down to −1.5 MPa”
Claim · model-written summary
Alfalfa germination responded similarly to NaCl and to PEG-imposed osmotic stress.
- Taxon
- alfalfaMedicago sativae6
- Treatment
- NaCle6
- Outcome
- germinatione6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Alfalfa germination responded similarly to NaCl”
Claim · model-written summary
Oxytropis riparia germination was less affected by NaCl than by PEG-imposed stress.
- Taxon
- Oxytropis ripariaOxytropis ripariat0
- Treatment
- NaCle7
- Outcome
- germinatione7
- Direction
- less affectede7
- Comparator
- PEGe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ruby Valley Pointvetch (Oxytropis riparia Litv.)”
e7“while pointvetch germination was less affected by NaCl than by PEG”
Claim · model-written summary
The germination tolerance of Oxytropis riparia to osmotic and salt stress is unique and warrants further study.
- Taxon
- Oxytropis ripariaOxytropis ripariat0
- Outcome
- germination tolerancee1
- Qualifier
- to osmotic and salt stresse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ruby Valley Pointvetch (Oxytropis riparia Litv.)”
e1“The germination tolerance of pointvetch to osmotic and salt stress is unique and warrants further study”
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