Abstract
The silverleaf whitefly (SLW), Bemisia argentifolii (Bellows and Perring), has been a severe pest of numerous field and vegetable crops for many years. Nevertheless, little has been reported on the complex interactions between SLW and its host plants. This study was aimed at investigating the effects of SLW on cotton ( Gossypium hirsutum L.) photosynthesis and productivity under various irrigation and N fertilization regimes. Cotton plants (cv. Siv'on) were examined during an entire growing season in two factorial‐designed screenhouse experiments consisting of two irrigation regimes (I) × two N application rates × two SLW levels (noninfested vs. infested). Buildup of the SLW population was markedly higher on N‐fertilized plants than on N‐deficient plants. Seed cotton yield was reduced by SLW in festation under all combinations of I × N treatments by about 40%. Yield reduction (noninfested minus infested) was significantly correlated with the number of SLW adults on the maximally infested leaf at peak flowering ( r 2 = 0.94, P < 0.05 in 1995; r 2 = 0.91, P < 0.05 in 1996). Photosynthetic rate decreased 50% at about 60 d after SLW introduction. The relative photosynthetic rate (infested/noninfested) was significantly correlated with SLW adult density on the maximally infested leaf ( r 2 = 0.72, P < 0.001 in 1995; r 2 = 0.53, P < 0.01 in 1996). The reduced photosynthetic rate was associated with reductions in chlorophyll variable fluorescence (Fv/Fm) and fluorescence yield. No substantial changes were found in stomatal conductance, intercellular CO 2 concentration, and leaf chlorophyll content. These findings indicate that SLW infestation impairs, either directly or indirectly, the photochemical reaction of the photosynthetic system in cotton plants.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Whitefly population buildup was greater on N-fertilized cotton plants.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- N‐fertilizede0
- Interactor
- Silverleaf Whitefly
Bemisia argentifoliit0pest - Outcome
- SLW populatione0
- Direction
- highere0
- Comparator
- N‐deficiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Buildup of the SLW population was markedly higher on N‐fertilized plants than on N‐deficient plants”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
Whitefly infestation reduced seed cotton yield by about 40% across irrigation and nitrogen combinations.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SLW in festatione0
- Outcome
- Seed cotton yielde0
- Direction
- reducede0
- Value
- about 40%e0
- Qualifier
- under all combinations of I × N treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed cotton yield was reduced by SLW in festation under all combinations of I × N treatments by about 40%”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
Yield reduction correlated significantly with whitefly adult count at peak flowering.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- maximally infested leaf at peak floweringe0
- Outcome
- Yield reductione0
- Value
- r 2 = 0.94e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reduction (noninfested minus infested) was significantly correlated with the number of SLW adults on the maximally infested leaf at peak flowering ( r 2 = 0.94, P < 0.05 in 1995; r 2 = 0.91, P < 0.05 in 1996)”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
Whitefly infestation decreased cotton photosynthetic rate by 50% about 60 days after introduction.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SLW introductione0
- Outcome
- Photosynthetic ratee0
- Direction
- decreasede0
- Value
- 50%e0
- Qualifier
- about 60 d after SLW introductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate decreased 50% at about 60 d after SLW introduction”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
Relative photosynthetic rate correlated significantly with whitefly adult density.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- relative photosynthetic ratee0
- Value
- r 2 = 0.72e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative photosynthetic rate (infested/noninfested) was significantly correlated with SLW adult density on the maximally infested leaf ( r 2 = 0.72, P < 0.001 in 1995; r 2 = 0.53, P < 0.01 in 1996)”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
Reduced photosynthesis was associated with lower variable fluorescence and fluorescence yield.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- cottont0
- Interactor
- Silverleaf WhiteflyBemisia argentifoliit0pest
- Outcome
- chlorophyll variable fluorescence (Fv/Fm) and fluorescence yielde0
- Direction
- reductionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduced photosynthetic rate was associated with reductions in chlorophyll variable fluorescence (Fv/Fm) and fluorescence yield”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
Stomatal conductance, intercellular CO2 concentration and leaf chlorophyll content showed no substantial changes.
- Taxon
- cottonGossypium hirsutumt0
- Interactor
- Silverleaf WhiteflyBemisia argentifoliit0pest
- Outcome
- stomatal conductance, intercellular CO 2 concentration, and leaf chlorophyll contente0
- Direction
- No substantial changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No substantial changes were found in stomatal conductance, intercellular CO 2 concentration, and leaf chlorophyll content”
t0“Cotton under Silverleaf Whitefly Stress”
Claim · model-written summary
The authors infer whitefly infestation impairs the photochemical reaction in cotton.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- SLW infestatione0
- Outcome
- photochemical reaction of the photosynthetic systeme0
- Qualifier
- either directly or indirectlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SLW infestation impairs, either directly or indirectly, the photochemical reaction of the photosynthetic system in cotton plants”
t0“Cotton under Silverleaf Whitefly Stress”
The same questions in other papers
Bemisia argentifolii · physiology: photosynthesis · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- negative
nitrogen · Bemisia argentifolii · Gossypium hirsutum (cotton)Positive and negative results
2 in the opposite direction
- positive
- positive
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.