Abstract
Abstract In several growers' reports Solatium lycopersicum, Sambucus nigra. Thymus vulgaris, Salvia officinalis, Artemisia absinthium, A. abrotanum , and Allium cepa are said to decrease the oviposition of Pieris brassicae, P. rapae and P. napi. In the present study the butterflies were fed with honey automats and reared throughout the year in artificial light in an insec‐tarium. In a dual‐choice chamber with a slow throughflow of air two equally sized cabbage leaves were placed on opposite sides. Significantly fewer eggs were layed on the cabbage leaf on which extracts of the mentioned plants had been applied. Ten butterflies were used in each experiment. The chemoreceptors and the chemicals involved are not identified but the inhibitory substances are surely secondary plant substances. Acceptance or rejection of secondary plant metabolics determines the complicated food relationships between plants and insects. The use of secondary plant substances for ecological control of insect pests is proposed.
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Claims 3
Claim · model-written summary
Extracts of the mentioned plants applied to cabbage leaves significantly reduced egg laying by Pieris butterflies.
- Taxon
- cabbage
Brassica oleracea var. capitatae1 - Treatment
- extracts of the mentioned plantse1
- Interactor
- Pieris brassicae
_Pieris_brassicae_-_Foret_de_Bouconne%2C_France_-_female.jpg?width=60)
Pieris brassicaee0pest - Outcome
- eggse1
- Direction
- fewere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pieris_brassicae_-_Foret_de_Bouconne%2C_France_-_female.jpg?width=500)
Verbatim
e0“decrease the oviposition of Pieris brassicae, P. rapae and P. napi”
e1“Significantly fewer eggs were layed on the cabbage leaf on which extracts of the mentioned plants had been applied”
Claim · model-written summary
The inhibitory substances are secondary plant substances, and the chemoreceptors involved are not identified.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Outcome
- inhibitory substancese2
- Qualifier
- secondary plant substancese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Significantly fewer eggs were layed on the cabbage leaf on which extracts of the mentioned plants had been applied”
e2“the inhibitory substances are surely secondary plant substances”
Claim · model-written summary
Secondary plant substances should be used for ecological control of insect pests on cabbage.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Outcome
- use of secondary plant substances for ecological control of insect pestse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Significantly fewer eggs were layed on the cabbage leaf on which extracts of the mentioned plants had been applied”
e3“The use of secondary plant substances for ecological control of insect pests is proposed”
The same questions in other papers
botanical · Pieris brassicae · Brassica oleracea (wild cabbage)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.