Abstract
A field experiment was carried out to investigate the effects of planting density and N application on the yield,photosynthetic characteristics and enzyme activities of tobacco. The results showed that: 1) Planting density and N had a positive interaction with shoot biomass; 2) Planting density,N and planting density × N had no effects on chlorophyll a,chlorophyll b and carotenoids content. Photosynthetic rate had no difference between high and medium density,which was higher than that of low density.Under the condition of high density,the photosynthetic rate of high N was higher than that of medium and low N treatment. Under the condition of medium density,photosynthetic rate at medium N had no difference compared with that at either low or high N. Photosynthetic rate at high N was higher than that at medium N,and photosynthetic rate at low N had no difference with that at medium or high N. Under the condition of low density,photosynthetic rate at high N was lower than that at low N,but photosynthetic rate at medium N had no difference compared with that at either low or high N; 3) Planting density and N had a significant impact on nitrate reductase activities and amylase activities at growing and maturing stages.
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Claims 7
Claim · model-written summary
Planting density and nitrogen had a positive interaction with tobacco shoot biomass.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Treatment
- Planting density and Ne0
- Outcome
- shoot biomasse0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting density and N had a positive interaction with shoot biomass”
t0“Flue-Cured Tobacco”
Claim · model-written summary
Planting density, nitrogen, and their interaction had no effects on chlorophyll a, chlorophyll b, or carotenoid contents.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- Planting density,N and planting density × Ne0
- Outcome
- chlorophyll a,chlorophyll b and carotenoids contente0
- Direction
- no effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting density,N and planting density × N had no effects on chlorophyll a,chlorophyll b and carotenoids content”
t0“Flue-Cured Tobacco”
Claim · model-written summary
Tobacco photosynthetic rate was similar at high and medium density and higher than at low density.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- high and medium densitye0
- Outcome
- Photosynthetic ratee0
- Direction
- highere0
- Comparator
- low densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate had no difference between high and medium density,which was higher than that of low density”
t0“Flue-Cured Tobacco”
Claim · model-written summary
At high density, high nitrogen produced higher photosynthetic rate than medium and low nitrogen.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- high Ne0
- Outcome
- photosynthetic ratee0
- Direction
- highere0
- Qualifier
- high densitye0
- Comparator
- medium and low N treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the condition of high density,the photosynthetic rate of high N was higher than that of medium and low N treatment”
t0“Flue-Cured Tobacco”
Claim · model-written summary
At medium density, medium nitrogen photosynthetic rate did not differ from low or high nitrogen.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- medium Ne0
- Outcome
- photosynthetic ratee0
- Direction
- no differencee0
- Qualifier
- medium densitye0
- Comparator
- low or high Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the condition of medium density,photosynthetic rate at medium N had no difference compared with that at either low or high N”
t0“Flue-Cured Tobacco”
Claim · model-written summary
At low density, high nitrogen produced lower photosynthetic rate than low nitrogen.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- high Ne0
- Outcome
- photosynthetic ratee0
- Direction
- lowere0
- Qualifier
- low densitye0
- Comparator
- low Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the condition of low density,photosynthetic rate at high N was lower than that at low N”
t0“Flue-Cured Tobacco”
Claim · model-written summary
Planting density and nitrogen significantly affected tobacco nitrate reductase and amylase activities at growing and maturing stages.
- Taxon
- TobaccoNicotiana tabacumt0
- Organ / stage
- growing and maturing stagese0
- Treatment
- Planting density and Ne0
- Outcome
- nitrate reductase activities and amylase activitiese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting density and N had a significant impact on nitrate reductase activities and amylase activities at growing and maturing stages”
t0“Flue-Cured Tobacco”
The same questions in other papers
in vitro · physiology: photosynthesis · Nicotiana tabacum (tobacco)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
nitrogen · physiology: photosynthesis · Nicotiana tabacum (tobacco)Positive and negative results
13 papers in the same direction as this paper · 9 in the opposite direction
- negative
- no effect
- negative
19 papers more in this group
See all 23 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.