Abstract
Summary Greater amounts (concentrations) of growth inhibitors were extracted from seed of dormant ‘Latar’ orchardgrass ( Dactylis glomerata L.) than from nondormant ‘S‐143’ orchardgrass. In Latar seed one‐third of the inhibitor was present in the lemma and palea and the remainder, in the caryopsis. On a per‐unit weight basis, however, the growth inhibitors are equally distributed between the hulls and the caryopsis. Storage of Latar seeds for 3 years did not significantly decrease the level of inhibitor. Chilling Latar seeds for 7 to 10 days at 5 C reduced the concentration (amount) of inhibitor to a level similar to that existing in nondormant S‐143 seed. Reduction of the inhibitor associated with Latar seeds by cold treatment of physical dehulling decreased their dormancy. Thus, the extent of dormancy appears to be regulated by the amount of growth inhibitors associated with the seed during germination.
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Claims 7
Claim · model-written summary
Dormant Latar seed yielded more growth inhibitor than nondormant S-143 seed.
- Taxon
- orchardgrass
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Dactylis glomeratae0 - Material
- ‘Latar’e0
- Outcome
- amounts (concentrations) of growth inhibitorse0
- Direction
- Greatere0
- Comparator
- ‘S‐143’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Greater amounts (concentrations) of growth inhibitors were extracted from seed of dormant ‘Latar’ orchardgrass ( Dactylis glomerata L.) than from nondormant ‘S‐143’ orchardgrass.”
Claim · model-written summary
One third of Latar seed inhibitor was in lemma and palea, with the remainder in the caryopsis.
- Taxon
- OrchardgrassDactylis glomeratat0
- Material
- Latare0
- Organ / stage
- lemma and paleae0
- Outcome
- inhibitor was present in the lemma and paleae0
- Value
- one‐thirde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Latar seed one‐third of the inhibitor was present in the lemma and palea and the remainder, in the caryopsis.”
t0“Orchardgrass”
Claim · model-written summary
On a weight basis, seed inhibitors were equally distributed between hulls and caryopsis.
- Taxon
- OrchardgrassDactylis glomeratat0
- Organ / stage
- hulls and the caryopsise0
- Outcome
- growth inhibitors are equally distributed between the hulls and the caryopsise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On a per‐unit weight basis, however, the growth inhibitors are equally distributed between the hulls and the caryopsis.”
t0“Orchardgrass”
Claim · model-written summary
Three years of storage did not significantly lower Latar seed inhibitor levels.
- Taxon
- OrchardgrassDactylis glomeratat0
- Material
- Latare0
- Treatment
- Storage of Latar seeds for 3 yearse0
- Outcome
- level of inhibitore0
- Direction
- did not significantly decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage of Latar seeds for 3 years did not significantly decrease the level of inhibitor.”
t0“Orchardgrass”
Claim · model-written summary
Chilling Latar seed for 7 to 10 days at 5 C reduced inhibitor concentration to the nondormant S-143 level.
- Taxon
- OrchardgrassDactylis glomeratat0
- Material
- Latare0
- Treatment
- Chilling Latar seeds for 7 to 10 days at 5 Ce0
- Outcome
- concentration (amount) of inhibitore0
- Direction
- reducede0
- Comparator
- nondormant S‐143 seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chilling Latar seeds for 7 to 10 days at 5 C reduced the concentration (amount) of inhibitor to a level similar to that existing in nondormant S‐143 seed.”
t0“Orchardgrass”
Claim · model-written summary
Cold treatment or physical dehulling reduced Latar seed dormancy in association with inhibitor reduction.
- Taxon
- OrchardgrassDactylis glomeratat0
- Material
- Latare0
- Treatment
- cold treatment of physical dehullinge0
- Outcome
- dormancye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction of the inhibitor associated with Latar seeds by cold treatment of physical dehulling decreased their dormancy.”
t0“Orchardgrass”
Claim · model-written summary
Seed dormancy appears regulated by inhibitor amount during germination.
- Taxon
- OrchardgrassDactylis glomeratat0
- Outcome
- extent of dormancye0
- Qualifier
- amount of growth inhibitors associated with the seed during germinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the extent of dormancy appears to be regulated by the amount of growth inhibitors associated with the seed during germination.”
t0“Orchardgrass”
The same questions in other papers
cold · growth · Dactylis glomerata (cocksfoot)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.