Abstract
[Objective]The effects of topping and NAA application on potassium absorption, accumulation, as well as the re-distribution of flue-cured tobacco were studied in order to provide theoretical references for regulating nutrition and quality of flue-cured tobacco. [Method]This study was carried out at different stages of tobacco developments along side with pot experiments and different treatments (topping, apex-keeping, and NAA) on tobacco plants. [Result]The results showed that topping accelerated dry matter accumulation of tobacco leaf, stem, and root, increased the potassium content in root as well as the middle leaves and stem at earlier stage of tobacco, but decreased that of upper leaves, middle leaves,and stem at later stage. It could also promote the potassium accumulation in leaves, stem, root, and its distribution in leaves. The bioavailability rate of potassium decreased, but the economic utilization rate of potassium in tobacco plants increased. After topping, the application of exogenous NAA could significantly increase the accumulation of potassium in tobacco plants, potassium content in middle leaves at earlier stage, and the contents in roots at later stage, while decrease potassium content in the upper leaves and stem; furthermore, the application of exogenous NAA could increase potassium accumulation in leaf, stem, and root, promote potassium distribution in tobacco leaves, and increase the economic utilization and bioavailability rates of potassium in tobacco plant. [Conclusion]The application of exogenous NAA after topping could balance different endogenous hormones, increase potassium accumulation in tobacco leaves, promote the absorption and redistribution of potassium, and improve the leaf quality.
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Claims 18
Claim · model-written summary
Topping accelerated dry matter accumulation in tobacco leaf, stem and root.
- Taxon
- tobacco
Nicotiana tabacume1 - Organ / stage
- leaf, stem, and roote1
- Treatment
- toppinge1
- Outcome
- dry matter accumulatione1
- Direction
- acceleratede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
Claim · model-written summary
Topping increased potassium content in roots, middle leaves and stem at the earlier stage.
- Taxon
- tobaccoNicotiana tabacume2
- Organ / stage
- middle leaves and stem at earlier stagee2
- Treatment
- toppinge1
- Outcome
- potassium contente2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
e2“increased the potassium content in root as well as the middle leaves and stem at earlier stage of tobacco”
Claim · model-written summary
Topping decreased potassium content in upper leaves, middle leaves and stem at the later stage.
- Taxon
- tobaccoNicotiana tabacume3
- Organ / stage
- upper leaves, middle leaves,and stem at later stagee3
- Treatment
- toppinge1
- Outcome
- potassium contente3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
e3“increased the potassium content in root as well as the middle leaves and stem at earlier stage of tobacco, but decreased that of upper leaves, middle leaves,and stem at later stage”
Claim · model-written summary
Topping promoted potassium accumulation in leaves, stem and root.
- Taxon
- tobaccoNicotiana tabacume1
- Organ / stage
- leaves, stem, roote4
- Treatment
- toppinge1
- Outcome
- potassium accumulatione4
- Direction
- promotee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
e4“It could also promote the potassium accumulation in leaves, stem, root, and its distribution in leaves”
Claim · model-written summary
Topping promoted potassium distribution in tobacco leaves.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- toppinge1
- Outcome
- its distribution in leavese4
- Direction
- promotee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
e4“It could also promote the potassium accumulation in leaves, stem, root, and its distribution in leaves”
Claim · model-written summary
Topping decreased the bioavailability rate of potassium.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- toppinge1
- Outcome
- bioavailability rate of potassiume5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
e5“The bioavailability rate of potassium decreased”
Claim · model-written summary
Topping increased the economic utilization rate of potassium in tobacco plants.
- Taxon
- tobacco plantsNicotiana tabacume6
- Treatment
- toppinge1
- Outcome
- economic utilization rate of potassiume6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“topping accelerated dry matter accumulation of tobacco leaf, stem, and root”
e6“but the economic utilization rate of potassium in tobacco plants increased”
Claim · model-written summary
After topping, exogenous NAA significantly increased potassium accumulation in tobacco plants.
- Taxon
- tobacco plantsNicotiana tabacume3
- Treatment
- exogenous NAAe3
- Outcome
- accumulation of potassium in tobacco plantse3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“After topping, the application of exogenous NAA could significantly increase the accumulation of potassium in tobacco plants”
Claim · model-written summary
After topping, exogenous NAA increased potassium content in middle leaves at the earlier stage.
- Taxon
- tobacco plantsNicotiana tabacume7
- Organ / stage
- middle leaves at earlier stagee7
- Treatment
- exogenous NAAe7
- Outcome
- potassium content in middle leavese7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“After topping, the application of exogenous NAA could significantly increase the accumulation of potassium in tobacco plants, potassium content in middle leaves at earlier stage, and the contents in roots at later stage, while decrease potassium content in the upper leaves and stem”
Claim · model-written summary
After topping, exogenous NAA increased contents in roots at the later stage.
- Taxon
- tobacco plantsNicotiana tabacume7
- Organ / stage
- roots at later stagee7
- Treatment
- exogenous NAAe7
- Outcome
- the contents in rootse7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“After topping, the application of exogenous NAA could significantly increase the accumulation of potassium in tobacco plants, potassium content in middle leaves at earlier stage, and the contents in roots at later stage, while decrease potassium content in the upper leaves and stem”
Claim · model-written summary
After topping, exogenous NAA decreased potassium content in upper leaves and stem.
- Taxon
- tobacco plantsNicotiana tabacume7
- Treatment
- exogenous NAAe7
- Outcome
- potassium content in the upper leaves and steme7
- Direction
- decreasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“After topping, the application of exogenous NAA could significantly increase the accumulation of potassium in tobacco plants, potassium content in middle leaves at earlier stage, and the contents in roots at later stage, while decrease potassium content in the upper leaves and stem”
Claim · model-written summary
Exogenous NAA increased potassium accumulation in leaf, stem and root.
- Taxon
- tobacco plantNicotiana tabacume0
- Treatment
- exogenous NAAe0
- Outcome
- potassium accumulation in leaf, stem, and roote0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of exogenous NAA could increase potassium accumulation in leaf, stem, and root, promote potassium distribution in tobacco leaves, and increase the economic utilization and bioavailability rates of potassium in tobacco plant”
Claim · model-written summary
Exogenous NAA promoted potassium distribution in tobacco leaves.
- Taxon
- tobacco plantNicotiana tabacume0
- Treatment
- exogenous NAAe0
- Outcome
- potassium distribution in tobacco leavese0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of exogenous NAA could increase potassium accumulation in leaf, stem, and root, promote potassium distribution in tobacco leaves, and increase the economic utilization and bioavailability rates of potassium in tobacco plant”
Claim · model-written summary
Exogenous NAA increased the economic utilization rate of potassium.
- Taxon
- tobacco plantNicotiana tabacume0
- Treatment
- exogenous NAAe0
- Outcome
- economic utilization and bioavailability rates of potassiume0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of exogenous NAA could increase potassium accumulation in leaf, stem, and root, promote potassium distribution in tobacco leaves, and increase the economic utilization and bioavailability rates of potassium in tobacco plant”
Claim · model-written summary
Exogenous NAA increased the bioavailability rate of potassium.
- Taxon
- tobacco plantNicotiana tabacume0
- Treatment
- exogenous NAAe0
- Outcome
- bioavailability rates of potassiume0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of exogenous NAA could increase potassium accumulation in leaf, stem, and root, promote potassium distribution in tobacco leaves, and increase the economic utilization and bioavailability rates of potassium in tobacco plant”
Claim · model-written summary
NAA after topping could balance endogenous hormones and thereby increase potassium accumulation in tobacco leaves.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- potassium accumulation in tobacco leavese0
- Qualifier
- balance different endogenous hormonese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of exogenous NAA after topping could balance different endogenous hormones, increase potassium accumulation in tobacco leaves, promote the absorption and redistribution of potassium, and improve the leaf quality”
Claim · model-written summary
Exogenous NAA after topping promoted potassium absorption and redistribution.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- exogenous NAA after toppinge0
- Outcome
- absorption and redistribution of potassiume0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of exogenous NAA after topping could balance different endogenous hormones, increase potassium accumulation in tobacco leaves, promote the absorption and redistribution of potassium, and improve the leaf quality”
Claim · model-written summary
Applying exogenous NAA after topping is recommended to improve tobacco leaf quality.
- Taxon
- tobaccoNicotiana tabacume0
- Outcome
- improve the leaf qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of exogenous NAA after topping could balance different endogenous hormones, increase potassium accumulation in tobacco leaves, promote the absorption and redistribution of potassium, and improve the leaf quality”
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