Abstract
Seed from six species of the Apiaceae and six parsley ( Petroselinum crispum L.) cultivars with three seed lots of each parsley cultivar were tested for the presence of germination inhibiting substances. Aqueous leachate from seed of all six species inhibited germination of lettuce ( Lactuca sativa L.) and radish ( Raphanus sativus L.). Leachate from root parsley seeds (P. crispum tuberosum ) were least inhibitory, while leachate from celery and celeriac (both Apium graveolens L.) seeds were most inhibitory. Inhibitory concentrations in leachate varied by seed lot within a cultivar. Aqueous leachate of seeds from the primary umbels caused less inhibition of germination than did leachate from tertiary umbels. Washing parsley seeds in aerated water for 3 hours or more removed some of the germination inhibitory substance as indicated by the germination bioassay. An aqueous extract prepared from seedcoat tissue, removed during mechanical scarification, inhibited radish seed germination; inhibition was proportional to the duration of scarification and the amount of seedcoat tissue extracted. Parsley seeds scarified ≤60 minutes germinated at rates comparable to washed seeds, but longer scarification time reduced germination. Washing seeds of Apiaceae prior to commercial drying and cleaning may be a practical solution for removal of inhibitors.
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Claims 11
Claim · model-written summary
Leachates from all six Apiaceae species inhibited lettuce and radish germination.
- Taxon
- lettuce ( Lactuca sativa L.) and radish ( Raphanus sativus L.)
Raphanus sativus
Lactuca sativae0 - Treatment
- Aqueous leachate from seed of all six speciese0
- Outcome
- germinatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aqueous leachate from seed of all six species inhibited germination of lettuce ( Lactuca sativa L.) and radish ( Raphanus sativus L.).”
Claim · model-written summary
Root parsley seed leachate was least inhibitory.
Verbatim
e0“Leachate from root parsley seeds (P. crispum tuberosum ) were least inhibitory”
Claim · model-written summary
Celery and celeriac seed leachates were most inhibitory.
- Taxon
- celery and celeriac (both Apium graveolens L.)
%2C_Elswick%2C_Northumberland_4.jpg?width=60)
Apium graveolens Dulce GroupApium graveolens Rapaceum Groupe0 - Organ / stage
- seedse0
- Outcome
- most inhibitorye0
- Direction
- most inhibitorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
%2C_Elswick%2C_Northumberland_4.jpg?width=500)
Verbatim
e0“leachate from celery and celeriac (both Apium graveolens L.) seeds were most inhibitory.”
Claim · model-written summary
Inhibitory leachate concentration varied by seed lot within a cultivar.
- Taxon
- Petroselinum crispum L.
Petroselinum crispumt0 - Outcome
- Inhibitory concentrations in leachatee0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibitory concentrations in leachate varied by seed lot within a cultivar.”
t0“Petroselinum crispum L.”
Claim · model-written summary
Primary umbel seed leachate inhibited germination less than tertiary umbel seed leachate.
- Taxon
- Petroselinum crispum L.Petroselinum crispumt0
- Organ / stage
- primary umbelse0
- Outcome
- inhibition of germinatione0
- Direction
- lesse0
- Comparator
- tertiary umbelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aqueous leachate of seeds from the primary umbels caused less inhibition of germination than did leachate from tertiary umbels.”
t0“Petroselinum crispum L.”
Claim · model-written summary
Washing parsley seeds for at least 3 hours removed some germination inhibitory substance.
- Taxon
- parsleyPetroselinum crispume0
- Treatment
- Washing parsley seeds in aerated water for 3 hours or moree0
- Outcome
- germination inhibitory substancee0
- Direction
- removede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Washing parsley seeds in aerated water for 3 hours or more removed some of the germination inhibitory substance as indicated by the germination bioassay.”
Claim · model-written summary
Seedcoat extract inhibited radish germination.
- Taxon
- radishRaphanus sativuse0
- Treatment
- aqueous extract prepared from seedcoat tissuee0
- Outcome
- radish seed germinatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An aqueous extract prepared from seedcoat tissue, removed during mechanical scarification, inhibited radish seed germination”
Claim · model-written summary
Radish germination inhibition increased with scarification duration and seedcoat tissue extracted.
- Taxon
- radishRaphanus sativuse0
- Treatment
- duration of scarificatione0
- Outcome
- inhibitione0
- Direction
- proportionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An aqueous extract prepared from seedcoat tissue, removed during mechanical scarification, inhibited radish seed germination; inhibition was proportional to the duration of scarification and the amount of seedcoat tissue extracted.”
Claim · model-written summary
Parsley seeds scarified no more than 60 minutes germinated comparably to washed seeds.
- Taxon
- ParsleyPetroselinum crispume0
- Treatment
- scarified ≤60 minutese0
- Outcome
- germinated at ratese0
- Direction
- comparablee0
- Comparator
- washed seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Parsley seeds scarified ≤60 minutes germinated at rates comparable to washed seeds”
Claim · model-written summary
Longer scarification reduced parsley seed germination.
- Taxon
- ParsleyPetroselinum crispume0
- Treatment
- longer scarification timee0
- Outcome
- germinatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Parsley seeds scarified ≤60 minutes germinated at rates comparable to washed seeds, but longer scarification time reduced germination.”
Claim · model-written summary
Washing Apiaceae seeds before commercial drying and cleaning may remove inhibitors.
- Outcome
- Washing seeds of Apiaceae prior to commercial drying and cleaninge0
Verbatim
e0“Washing seeds of Apiaceae prior to commercial drying and cleaning may be a practical solution for removal of inhibitors.”
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seed treatment · growth · Petroselinum crispum (parsley)Positive and negative results
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- positive
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See all 13 papers →botanical · growth · Raphanus sativus (radish)Positive and negative results
98 papers in the same direction as this paper · 53 in the opposite direction
- positive
- positive
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148 papers more in this group
See all 152 papers →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.