Abstract
To investigate the apical regulation measures on quality of flue-cured tobacco,the effects of different topping measures on activity of polyphenol oxidase(PPO) and chemical components of tobacco leaves were studied.The results showed that topping and debud clearly promoted synthesis of nicotine and its accumulation in tobacco leaves,increased content of reduced sugar,improved PPO activity at maturity,reduced potassium loss from leaves in late growth stage and increased potassium content in upper and middle leaves.
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Claims 5
Claim · model-written summary
Topping and debudding promoted nicotine synthesis and accumulation in tobacco leaves.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- topping and debude0
- Outcome
- synthesis of nicotine and its accumulation in tobacco leavese0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topping and debud clearly promoted synthesis of nicotine and its accumulation in tobacco leaves”
Claim · model-written summary
Topping and debudding increased reduced sugar content.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- topping and debude0
- Outcome
- content of reduced sugare0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topping and debud clearly promoted synthesis of nicotine and its accumulation in tobacco leaves,increased content of reduced sugar”
Claim · model-written summary
Topping and debudding improved PPO activity at maturity.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- maturitye0
- Treatment
- topping and debude0
- Outcome
- PPO activitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topping and debud clearly promoted synthesis of nicotine and its accumulation in tobacco leaves,increased content of reduced sugar,improved PPO activity at maturity”
Claim · model-written summary
Topping and debudding reduced potassium loss from tobacco leaves late in growth.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- late growth stagee0
- Treatment
- topping and debude0
- Outcome
- potassium loss from leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topping and debud clearly promoted synthesis of nicotine and its accumulation in tobacco leaves,increased content of reduced sugar,improved PPO activity at maturity,reduced potassium loss from leaves in late growth stage”
Claim · model-written summary
Topping and debudding increased potassium content in upper and middle tobacco leaves.
- Taxon
- tobaccoNicotiana tabacume0
- Organ / stage
- upper and middle leavese0
- Treatment
- topping and debude0
- Outcome
- potassium contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topping and debud clearly promoted synthesis of nicotine and its accumulation in tobacco leaves,increased content of reduced sugar,improved PPO activity at maturity,reduced potassium loss from leaves in late growth stage and increased potassium content in upper and middle leaves”
The same questions in other papers
pruning · nutrient: content · Nicotiana tabacum (tobacco)Results differ
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- no effect
- no effect
- negative
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See all 12 papers →pruning · physiology: antioxidant enzymes · Nicotiana tabacum (tobacco)Positive and negative results
1 in the opposite direction
- negative
pruning · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results
22 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
23 papers more in this group
See all 27 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.