Abstract
The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill. Plant volatiles as well as chemicals extracted from leaves were bioassayed for oviposition attraction in a two-choice olfactometer, where mated adults were given equal opportunity for oviposition either on plant extract side or solvent check side. Two fractions of microwave-assisted extracts from leaves of both plants elicited strong oviposition response. Normal alkanes, 13,17,21-trimethylheptatriacontane and octacosane were the only chemicals present in these fractions of S. viarum, whereas besides these chemicals, few other n-alkanes and related primary alcohols and aldehydes were present in tomato foliage. Oviposition attractants were also present in volatiles of both plants. Two fractions from S. viarum containing several small molecular weight alkanes elicited strong ovipositional response. One of the two fractions of tomato volatiles that elicited moderate oviposition response contained predominantly 3-nitrobenzyl alcohol and minor amounts of 3-nitrobenzaldehyde, whereas the other that showed strong oviposition deterrent activity contained 3-nitrobenzyl alcohol and small amounts of docosane and trimethyldecane, in addition to an unknown compound. Although several chemicals in both plants were active in oviposition of H. armigera, we were not able to ascertain whether all or only certain specific chemicals are involved in this process. However, constancy in most of the identified compounds, especially n-alkanes in the two different genera Solanum and Lycopersicon could have formed the basis for host selection by H. armigera.
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Claims 9
Claim · model-written summary
Microwave-assisted leaf extract fractions of Solanum viarum elicited a strong oviposition response of Helicoverpa armigera compared with the solvent check.
- Taxon
- Solanum viarum
Solanum viarume0 - Treatment
- microwave-assisted extracts from leavese1
- Interactor
- Helicoverpa armigera
_gusano_cogollero.png?width=60)
Helicoverpa armigerae0pest - Outcome
- oviposition responsee1
- Direction
- stronge1
- Comparator
- solvent check sidee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_gusano_cogollero.png?width=500)
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e1“Two fractions of microwave-assisted extracts from leaves of both plants elicited strong oviposition response”
e2“mated adults were given equal opportunity for oviposition either on plant extract side or solvent check side”
Claim · model-written summary
Microwave-assisted leaf extract fractions of tomato elicited a strong oviposition response of Helicoverpa armigera compared with the solvent check.
- Taxon
- Lycopersicon esculentum
Solanum lycopersicume0 - Treatment
- microwave-assisted extracts from leavese1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerae0pest
- Outcome
- oviposition responsee1
- Direction
- stronge1
- Comparator
- solvent check sidee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e1“Two fractions of microwave-assisted extracts from leaves of both plants elicited strong oviposition response”
e2“mated adults were given equal opportunity for oviposition either on plant extract side or solvent check side”
Claim · model-written summary
Two volatile fractions of Solanum viarum containing small molecular weight alkanes elicited a strong ovipositional response of Helicoverpa armigera.
- Taxon
- Solanum viarumSolanum viarume0
- Treatment
- Two fractions from S. viarum containing several small molecular weight alkanese3
- Interactor
- Helicoverpa armigeraHelicoverpa armigerae0pest
- Outcome
- ovipositional responsee3
- Direction
- stronge3
- Comparator
- solvent check sidee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e2“mated adults were given equal opportunity for oviposition either on plant extract side or solvent check side”
e3“Two fractions from S. viarum containing several small molecular weight alkanes elicited strong ovipositional response”
Claim · model-written summary
One tomato volatile fraction containing 3-nitrobenzyl alcohol elicited a moderate oviposition response of Helicoverpa armigera.
- Taxon
- Lycopersicon esculentumSolanum lycopersicume0
- Treatment
- One of the two fractions of tomato volatilese4
- Interactor
- Helicoverpa armigeraHelicoverpa armigerae0pest
- Compound
- 3-nitrobenzyl alcohole4
- Outcome
- oviposition responsee4
- Direction
- moderatee4
- Comparator
- solvent check sidee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e2“mated adults were given equal opportunity for oviposition either on plant extract side or solvent check side”
e4“One of the two fractions of tomato volatiles that elicited moderate oviposition response contained predominantly 3-nitrobenzyl alcohol and minor amounts of 3-nitrobenzaldehyde”
Claim · model-written summary
Another tomato volatile fraction containing 3-nitrobenzyl alcohol showed a strong oviposition deterrent activity against Helicoverpa armigera.
- Taxon
- Lycopersicon esculentumSolanum lycopersicume0
- Treatment
- tomato volatilese4
- Interactor
- Helicoverpa armigeraHelicoverpa armigerae0pest
- Compound
- 3-nitrobenzyl alcohole5
- Outcome
- oviposition deterrent activitye5
- Direction
- stronge5
- Comparator
- solvent check sidee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e2“mated adults were given equal opportunity for oviposition either on plant extract side or solvent check side”
e4“One of the two fractions of tomato volatiles that elicited moderate oviposition response”
e5“the other that showed strong oviposition deterrent activity contained 3-nitrobenzyl alcohol”
Claim · model-written summary
Normal alkanes 13,17,21-trimethylheptatriacontane and octacosane were the only chemicals present in the Solanum viarum fractions.
- Taxon
- Solanum viarumSolanum viarume0
- Outcome
- Normal alkanes, 13,17,21-trimethylheptatriacontane and octacosanee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e6“Normal alkanes, 13,17,21-trimethylheptatriacontane and octacosane were the only chemicals present in these fractions of S. viarum”
Claim · model-written summary
Besides the alkanes, few other n-alkanes and related primary alcohols and aldehydes were present in tomato foliage.
- Taxon
- Lycopersicon esculentumSolanum lycopersicume0
- Outcome
- few other n-alkanes and related primary alcohols and aldehydese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e7“few other n-alkanes and related primary alcohols and aldehydes were present in tomato foliage”
Claim · model-written summary
Oviposition attractants were present in volatiles of Solanum viarum.
- Taxon
- Solanum viarumSolanum viarume0
- Outcome
- Oviposition attractantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e7“Oviposition attractants were also present in volatiles of both plants”
Claim · model-written summary
Oviposition attractants were present in volatiles of Lycopersicon esculentum.
- Taxon
- Lycopersicon esculentumSolanum lycopersicume0
- Outcome
- Oviposition attractantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of host plant chemicals in oviposition of Helicoverpa armigera Hiibner (Lepidoptera: Noctuidae) was studied in two solanaceous plants, Solanum viarum Dunal. and Lycopersicon esculentum Mill.”
e7“Oviposition attractants were also present in volatiles of both plants”
The same questions in other papers
botanical · Helicoverpa armigera · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 21 in the opposite direction
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