Abstract
Early spring low temperature hazards are a common problem in southern China's tobacco production areas, leading to slow germination of tobacco seeds. In the present study, spermine (Spm), salicylic acid (SA) and polyethylene glycol (PEG) were used to prime seeds of different tobacco cultivars. After priming, their germination indices were evaluated in an optimal temperature (25°C) germination test and a low temperature (12°C) germination test. In the optimal temperature germination experiment, priming with any of Spm, SA and PEG could improve the germination index (GI) and reduce the mean germination time (MGT) of 'Xiangyang No. 7' seeds. Moreover, priming with Spm or PEG enhanced the vigour indices (VI) at most priming concentrations and durations, while SA priming with 0.5 mmol L -1 for 24 hours improved the germination potential (GE) and SA priming with 0.5 and 0.6 mmol L -1 for 48 hours improved germination potential (GP). For the low temperature germination experiment, Spm or PEG priming treatment based on the optimal temperature germination experiment markedly improved GI and VI, which was confirmed by the enhancement of antioxidative enzyme activities, while the selected SA priming treatments significantly enhanced GI except for at 0.6 mmol L -1 for 12 hours. Our results indicated that Spm, SA and PEG could be used for enhancing chilling tolerance of tobacco seeds and improving seed germination.
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Claims 9
Claim · model-written summary
At optimal temperature, priming with spermine, salicylic acid or PEG improved the germination index of Xiangyang No. 7 tobacco seeds.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Material
- 'Xiangyang No. 7'e0
- Treatment
- priming with any of Spm, SA and PEGe0
- Outcome
- germination index (GI)e0
- Direction
- improvee0
- Setting
- optimal temperature germination experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the optimal temperature germination experiment, priming with any of Spm, SA and PEG could improve the germination index (GI) and reduce the mean germination time (MGT) of 'Xiangyang No. 7'”
t0“Tobacco Seeds”
Claim · model-written summary
At optimal temperature, priming with spermine, salicylic acid or PEG reduced the mean germination time of Xiangyang No. 7 tobacco seeds.
- Taxon
- TobaccoNicotiana tabacumt0
- Material
- 'Xiangyang No. 7'e0
- Treatment
- priming with any of Spm, SA and PEGe0
- Outcome
- mean germination time (MGT)e0
- Direction
- reducee0
- Setting
- optimal temperature germination experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the optimal temperature germination experiment, priming with any of Spm, SA and PEG could improve the germination index (GI) and reduce the mean germination time (MGT) of 'Xiangyang No. 7'”
t0“Tobacco Seeds”
Claim · model-written summary
Priming with spermine or PEG enhanced vigour indices at most priming concentrations and durations.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- priming with Spm or PEGe0
- Outcome
- vigour indices (VI)e0
- Direction
- enhancede0
- Qualifier
- at most priming concentrations and durationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming with Spm or PEG enhanced the vigour indices (VI) at most priming concentrations and durations”
t0“Tobacco Seeds”
Claim · model-written summary
Salicylic acid priming at 0.5 mmol L-1 for 24 hours improved the germination potential (GE).
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- SA priming with 0.5 mmol L -1 for 24 hourse0
- Outcome
- germination potential (GE)e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA priming with 0.5 mmol L -1 for 24 hours improved the germination potential (GE)”
t0“Tobacco Seeds”
Claim · model-written summary
Salicylic acid priming at 0.5 and 0.6 mmol L-1 for 48 hours improved germination potential (GP).
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- SA priming with 0.5 and 0.6 mmol L -1 for 48 hourse0
- Outcome
- germination potential (GP)e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA priming with 0.5 and 0.6 mmol L -1 for 48 hours improved germination potential (GP)”
t0“Tobacco Seeds”
Claim · model-written summary
In the low temperature germination test, spermine or PEG priming markedly improved germination index and vigour index.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- Spm or PEG priming treatmente0
- Outcome
- GI and VIe0
- Direction
- markedly improvede0
- Setting
- low temperature germination experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the low temperature germination experiment, Spm or PEG priming treatment based on the optimal temperature germination experiment markedly improved GI and VI”
t0“Tobacco Seeds”
Claim · model-written summary
In the low temperature germination test, spermine or PEG priming was accompanied by enhanced antioxidative enzyme activities.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- Spm or PEG priming treatmente0
- Outcome
- antioxidative enzyme activitiese0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spm or PEG priming treatment based on the optimal temperature germination experiment markedly improved GI and VI, which was confirmed by the enhancement of antioxidative enzyme activities”
t0“Tobacco Seeds”
Claim · model-written summary
In the low temperature test, the selected salicylic acid priming treatments significantly enhanced germination index except at 0.6 mmol L-1 for 12 hours.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- selected SA priming treatmentse0
- Outcome
- GIe0
- Direction
- enhancede0
- Qualifier
- except for at 0.6 mmol L -1 for 12 hourse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the selected SA priming treatments significantly enhanced GI except for at 0.6 mmol L -1 for 12 hours”
t0“Tobacco Seeds”
Claim · model-written summary
The authors conclude that spermine, salicylic acid and PEG could be used to enhance chilling tolerance of tobacco seeds and improve seed germination.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- enhancing chilling tolerance of tobacco seeds and improving seed germinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spm, SA and PEG could be used for enhancing chilling tolerance of tobacco seeds and improving seed germination”
The same questions in other papers
salicylic acid · growth · Nicotiana tabacum (tobacco)Results differ
6 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
9 papers more in this group
See all 13 papers →poly(ethylene glycol) · growth · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- positive
- positive
seed treatment · growth · Nicotiana tabacum (tobacco)Positive and negative results
19 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- negative
20 papers more in this group
See all 24 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.