Abstract
In order to investigate the control mechanism thoroughly,the effect of wheat aphid survival time,honeydew excretion and the sucking ability of different dosage of Macrosiphum avenae Fabricius on the wheat plant by seed dressing with imidacloprid were tested in this research.The results indicated that different control mechanisms of the wheat plant against aphid were observed at different growing periods.At the seedling stage,the plant of the seed dressing had a strong stomach poison activity against wheat aphid.At the booting stage,the survival rate of wheat aphid on the plant after seed-dressing was 42.56%,but it was 77.33% within 24 hours of seed-filling stage.The dose of honeydew excretion was 7.86% and 8.59% compared with CK,respectively at the two stages above.Compared with the booting stage,the survival rate increased obviously at the seed-filling stage.However,for the excretion of honeydew,there was significant differences between the two periods,it was showed that imidacloprid had an antifeedant activity against the wheat aphid after dressing on the wheat seeds.The number of the sucking was only 39.19% compared with the control at seed-filling stage,which was showed a strong antifeedant activity against the aphid.We suggest that it was a strong stomach poison activity against wheat aphid at the seedling stage,and at the booting stage,the mechanism was stomach poison cooperated with antifeedant activity,whereas at the seed-filling stage the mechanism was a strong antifeedant activity against the aphid.
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Claims 12
Claim · model-written summary
At the seedling stage, dressed wheat had strong stomach poison activity against aphids.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- seedling stagee0
- Interactor
- wheat aphide0pest
- Outcome
- strong stomach poison activity against wheat aphide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the seedling stage,the plant of the seed dressing had a strong stomach poison activity against wheat aphid”
Claim · model-written summary
At booting, aphid survival on dressed wheat was 42.56%.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- booting stagee0
- Treatment
- seed-dressinge0
- Interactor
- wheat aphide0pest
- Outcome
- survival rate of wheat aphide0
- Value
- 42.56%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the booting stage,the survival rate of wheat aphid on the plant after seed-dressing was 42.56%”
Claim · model-written summary
At seed filling, aphid survival within 24 hours was 77.33%.
- Organ / stage
- seed-filling stagee0
- Outcome
- 77.33% within 24 hours of seed-filling stagee0
- Value
- 77.33%e0
- Qualifier
- within 24 hourse0
Not reportedTaxon
Verbatim
e0“it was 77.33% within 24 hours of seed-filling stage”
Claim · model-written summary
At booting, honeydew excretion was 7.86% of CK.
Not reportedTaxonTreatmentDirection
Verbatim
e0“The dose of honeydew excretion was 7.86% and 8.59% compared with CK,respectively at the two stages above”
Claim · model-written summary
At seed filling, honeydew excretion was 8.59% of CK.
Not reportedTaxonTreatmentDirection
Verbatim
e0“The dose of honeydew excretion was 7.86% and 8.59% compared with CK,respectively at the two stages above”
Claim · model-written summary
Aphid survival was higher at seed filling than at booting.
- Organ / stage
- seed-filling stagee0
- Outcome
- survival ratee0
- Direction
- increasede0
- Comparator
- booting stagee0
Not reportedTaxon
Verbatim
e0“Compared with the booting stage,the survival rate increased obviously at the seed-filling stage”
Claim · model-written summary
Honeydew excretion differed significantly between booting and seed filling.
Not reportedTaxonDirection
Verbatim
e0“for the excretion of honeydew,there was significant differences between the two periods”
Claim · model-written summary
At seed filling, aphid sucking number was 39.19% of control.
- Organ / stage
- seed-filling stagee0
- Outcome
- number of the suckinge0
- Direction
- onlye0
- Value
- 39.19%e0
- Comparator
- controle0
Not reportedTaxonTreatment
Verbatim
e0“The number of the sucking was only 39.19% compared with the control at seed-filling stage”
Claim · model-written summary
Imidacloprid seed dressing had antifeedant activity against aphids.
- Taxon
- wheatTriticum aestivume0
- Treatment
- imidaclopride0
- Interactor
- wheat aphide0pest
- Outcome
- antifeedant activity against the wheat aphide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imidacloprid had an antifeedant activity against the wheat aphid after dressing on the wheat seeds”
Claim · model-written summary
Authors suggest stomach poison activity dominates at the seedling stage.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- seedling stagee0
- Interactor
- wheat aphide0pest
- Outcome
- strong stomach poison activity against wheat aphide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was a strong stomach poison activity against wheat aphid at the seedling stage”
Claim · model-written summary
Authors suggest stomach poison and antifeedant activity act together at booting.
Not reportedTaxon
Verbatim
e0“at the booting stage,the mechanism was stomach poison cooperated with antifeedant activity”
Claim · model-written summary
Authors suggest strong antifeedant activity at seed filling.
- Organ / stage
- seed-filling stagee0
- Interactor
- aphide0pest
- Outcome
- strong antifeedant activity against the aphide0
Not reportedTaxon
Verbatim
e0“at the seed-filling stage the mechanism was a strong antifeedant activity against the aphid”