Abstract
Abstract Tomato plants, Lycopersicon esculentum Miller cv ‘Tres Cantos’, were supplied with high (308 ppm), medium (140 ppm) and low (84 ppm) nitrogen doses in order to determine the influence of nitrogen fertilization on feeding and oviposition site selection by greenhouse whitefly adults, T. vaporariorum (Westwood). The nitrogen and water content was higher in plants supplied with 308 N ppm than in plants with medium or low nitrogen doses and no differences were found in soluble sugar content. The leaves of the upper plant stratum (leaves 1–5) had the greatest nitrogen and water content, independent of the nitrogen dose applied. The plants were exposed to T. vaporariorum adults into a greenhouse under two current (late autumn‐winter and spring‐early summer) situations of the tomato crop in the Mediterranean area. The distribution of whitefly adults on the plants was affected by the nitrogen dose in both experimental conditions, the number of adults was higher on the plants supplied with high nitrogen dose. Within plants, adult distribution was affected by leaf position, the upper plant stratum being preferred for feeding. Whitefly females selected for oviposition and laid more eggs on plants and leaves of plants with higher nitrogen and water contents. We conclude that whitefly host selection for feeding and ovipositing are related to differences in nitrogen and water content of the host plant.
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Claims 7
Claim · model-written summary
High nitrogen supply raised plant nitrogen and water content relative to medium or low doses.
- Taxon
- Tomato
Solanum lycopersicumt0 - Material
- Tres Cantose1
- Treatment
- 308 N ppme0
- Outcome
- nitrogen and water contente0
- Direction
- highere0
- Comparator
- medium or low nitrogen dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nitrogen and water content was higher in plants supplied with 308 N ppm than in plants with medium or low nitrogen doses”
t0“tomato”
e1“Tomato plants, Lycopersicon esculentum Miller cv ‘Tres Cantos’”
Claim · model-written summary
Soluble sugar content did not differ among nitrogen doses.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- nitrogen dosese1
- Outcome
- soluble sugar contente0
- Direction
- no differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no differences were found in soluble sugar content”
t0“tomato”
e1“were supplied with high (308 ppm), medium (140 ppm) and low (84 ppm) nitrogen doses”
Claim · model-written summary
Upper-stratum leaves had greatest nitrogen and water content irrespective of nitrogen dose.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leaves of the upper plant stratum (leaves 1–5)e0
- Outcome
- nitrogen and water contente0
- Direction
- greateste0
- Qualifier
- independent of the nitrogen dose appliede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaves of the upper plant stratum (leaves 1–5) had the greatest nitrogen and water content, independent of the nitrogen dose applied”
t0“tomato”
Claim · model-written summary
More whitefly adults occupied high-nitrogen plants in both experimental conditions.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high nitrogen dosee0
- Interactor
- Trialeurodes vaporariorum
Trialeurodes vaporariorumt0pest - Outcome
- number of adultse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of adults was higher on the plants supplied with high nitrogen dose”
t0“tomato on feeding site selection and oviposition by Trialeurodes vaporariorum”
Claim · model-written summary
Whitefly adults preferred the upper plant stratum for feeding.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- upper plant stratume0
- Interactor
- Trialeurodes vaporariorumTrialeurodes vaporariorumt0pest
- Outcome
- preferred for feedinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within plants, adult distribution was affected by leaf position, the upper plant stratum being preferred for feeding”
t0“tomato on feeding site selection and oviposition by Trialeurodes vaporariorum”
Claim · model-written summary
Whitefly females laid more eggs on plants and leaves with higher nitrogen and water contents.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leavese0
- Interactor
- Trialeurodes vaporariorumTrialeurodes vaporariorumt0pest
- Outcome
- laid more eggse0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whitefly females selected for oviposition and laid more eggs on plants and leaves of plants with higher nitrogen and water contents”
t0“tomato on feeding site selection and oviposition by Trialeurodes vaporariorum”
Claim · model-written summary
Whitefly feeding and oviposition selection were associated with host nitrogen and water content.
- Taxon
- tomatoSolanum lycopersicumt0
- Interactor
- Trialeurodes vaporariorumTrialeurodes vaporariorumt0pest
- Compound
- nitrogene0
- Outcome
- whitefly host selection for feeding and ovipositinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whitefly host selection for feeding and ovipositing are related to differences in nitrogen and water content of the host plant”
t0“tomato on feeding site selection and oviposition by Trialeurodes vaporariorum”
The same questions in other papers
nitrogen · physiology: osmolytes · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
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10 papers more in this group
See all 14 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.