Abstract
Parsley seeds are known for nonuniform and long germination; consequently, vegetable nurseries commonly use priming techniques to improve the production of parsley seedlings. The objectives of this study were 1) to characterize the imbibition curve of parsley seeds, 2) to evaluate the effect of different priming agents on parsley seedling production, and ultimately 3) to compare priming techniques for emergence and vigor of parsley’s seedlings, thus providing an optimal priming strategy for parsley seedling production. Using three priming agents—water (seeds imbibed for 24, 48, 72, and 96 hours), polyethylene glycol 6000 (PEG6000) (seeds imbibed at –0.5, –1.0, –1.5, and –2.0 MPa for 29, 58, 87, and 116 hours), and gibberellic acid (GA) (seeds imbibed at 0.5, 1.0, 1.5, and 2.0 g·L −1 a.i. of solution for 15, 30, 45, and 60 minutes), and two parsley cultivars (Krausa and Titan), three experiments evaluated parsley seedling parameters, including emergence speed index (ESI) and total emergence (TE) in a complete randomized block design (n = 4) each. In Expt. 1 (hydropriming), increasing water imbibition time (IT) reduced ESI on both parsley cultivars. In addition, the TE quadratically reduced with the increase of water IT. In Expt. 2 (osmopriming), there was no significant main effect or interaction of treatments on ESI. Regardless of PEG6000 concentration, the TE had a linear increase with the increase of IT for cultivar Krausa but not for cultivar Titan. In Expt. 3 (hormonal priming), there was a significant increase in ESI and TE with the increase in GA rate. Ultimately, strategies for analysis of best priming were water at 24 hours of IT, PEG6000 at –2.0 MPa for 116 hours of IT, and GA at 2.0 g·L −1 a.i. of solution for 15 minutes of IT. Once compared with an untreated seeds treatment, priming strategies of water imbibition for 24 hours and PEG6000 at –2.0 MPa for 116 hours had the highest ESI and TE.
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Claims 8
Claim · model-written summary
Increasing water imbibition time reduced emergence speed index on both parsley cultivars.
- Taxon
- Parsley
Petroselinum crispumt0 - Treatment
- water imbibition timee1
- Outcome
- ESIe1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e1“In Expt. 1 (hydropriming), increasing water imbibition time (IT) reduced ESI on both parsley cultivars”
Claim · model-written summary
Increasing water imbibition time quadratically reduced total emergence.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- water ITe2
- Outcome
- TEe2
- Direction
- quadratically reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e2“the TE quadratically reduced with the increase of water IT”
Claim · model-written summary
Osmopriming with PEG6000 had no significant main effect or interaction on emergence speed index.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- osmopriminge3
- Outcome
- ESIe3
- Direction
- no significant main effecte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e3“In Expt. 2 (osmopriming), there was no significant main effect or interaction of treatments on ESI”
Claim · model-written summary
Total emergence increased linearly with water imbibition time for cultivar Krausa under PEG6000 priming.
- Taxon
- ParsleyPetroselinum crispumt0
- Material
- Krausae4
- Treatment
- PEG6000 concentratione4
- Outcome
- TEe4
- Direction
- linear increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e4“Regardless of PEG6000 concentration, the TE had a linear increase with the increase of IT for cultivar Krausa but not for cultivar Titan”
Claim · model-written summary
Total emergence did not increase linearly with water imbibition time for cultivar Titan under PEG6000 priming.
- Taxon
- ParsleyPetroselinum crispumt0
- Material
- Titane4
- Treatment
- PEG6000 concentratione4
- Outcome
- TEe4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e4“Regardless of PEG6000 concentration, the TE had a linear increase with the increase of IT for cultivar Krausa but not for cultivar Titan”
Claim · model-written summary
Hormonal priming with GA significantly increased emergence speed index and total emergence as GA rate increased.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- GA ratee5
- Outcome
- ESI and TEe5
- Direction
- significant increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e5“there was a significant increase in ESI and TE with the increase in GA rate”
Claim · model-written summary
Water priming for 24 hours and PEG6000 at -2.0 MPa for 116 hours gave the highest emergence speed index and total emergence compared with untreated seeds.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- water imbibition for 24 hours and PEG6000 at –2.0 MPa for 116 hourse6
- Outcome
- ESI and TEe6
- Direction
- had the higheste6
- Comparator
- untreated seedse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e6“Once compared with an untreated seeds treatment, priming strategies of water imbibition for 24 hours and PEG6000 at –2.0 MPa for 116 hours had the highest ESI and TE”
Claim · model-written summary
GA at 2.0 g·L −1 for 15 minutes of imbibition was identified as the best priming strategy.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- GA at 2.0 g·L −1 a.i. of solution for 15 minutes of ITe7
- Outcome
- best priminge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Priming Strategies for Parsley Seedling Production”
e7“strategies for analysis of best priming were water at 24 hours of IT, PEG6000 at –2.0 MPa for 116 hours of IT, and GA at 2.0 g·L −1 a.i. of solution for 15 minutes of IT”
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poly(ethylene glycol) · growth · Petroselinum crispum (parsley)Results agree
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- positive
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- positive
- positive
- positive
seed treatment · growth · Petroselinum crispum (parsley)Positive and negative results
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See all 13 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.