Abstract
Survival, growth, fecundity, and behavior of Helicoverpa armigera (Hübner) were compared on pods of cultivated pigeonpea, Cajanus cajan (L.) Millspaugh, and 2 wild species, C. scarabaeoides. (L.) Thouars, and C. platycarpus (Bentham) van der Maeson. Larval survival was 21% on C. scarabaeoides, 56% on C. platycarpus, and 78% on C. cajan. Pupal survival was high on all 3 Cajanus species. Seven-day-old larvae reared on C. scarabaeoides pods weighed significantly less at 18 d, took longer to pupate and produced significantly smaller pupae than those fed on C. cajan pods. Larval period and weight, and pupal weight when reared on C. platycarpus were intermediate and significantly different from the other 2 species. Differences in pupal duration were not significant between larvae reared on the 3 Cajanus species. Larvae on C. scarabaeoides spent significantly less time feeding and significantly more time off the pod than larvae on the oilier 2 species. Acetone extracts of C. cajan and C. platycarpus pods had a significant feeding stimulant effect on H. armigera larvae, whereas extracts from C. scarabaeoides pods had no effect. Water extract of C. scarabaeoides pods had a significant antifeedant effect though similar extracts from C. cajan and C. platycarpus pods had no effect. Application of these results to resistance breeding programs is discussed.
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Claims 17
Claim · model-written summary
Larval survival of H. armigera on C. scarabaeoides pods was 21%.
- Taxon
- C. scarabaeoides
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Cajanus scarabaeoidese1 - Interactor
- Helicoverpa armigera
_gusano_cogollero.png?width=60)
Helicoverpa armigerat0pest - Outcome
- Larval survivale1
- Value
- 21%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
_gusano_cogollero.png?width=500)
Verbatim
e1“Larval survival was 21% on C. scarabaeoides, 56% on C. platycarpus, and 78% on C. cajan”
t0“Helicoverpa armigera”
Claim · model-written summary
Larval survival of H. armigera on C. platycarpus pods was 56%.
- Taxon
- C. platycarpusCajanus platycarpuse1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- Larval survivale1
- Value
- 56%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Larval survival was 21% on C. scarabaeoides, 56% on C. platycarpus, and 78% on C. cajan”
t0“Helicoverpa armigera”
Claim · model-written summary
Larval survival of H. armigera on C. cajan pods was 78%.
- Taxon
- C. cajan
Cajanus cajane1 - Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- Larval survivale1
- Value
- 78%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Larval survival was 21% on C. scarabaeoides, 56% on C. platycarpus, and 78% on C. cajan”
t0“Helicoverpa armigera”
Claim · model-written summary
Pupal survival of H. armigera was high on all three Cajanus species.
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- Pupal survivale1
- Direction
- highe1
CajanusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pupal survival was high on all 3 Cajanus species”
t0“Helicoverpa armigera”
Claim · model-written summary
Seven-day-old H. armigera larvae reared on C. scarabaeoides pods weighed significantly less at 18 d than those fed on C. cajan pods.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- weighede1
- Direction
- lesse1
- Comparator
- C. cajane1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seven-day-old larvae reared on C. scarabaeoides pods weighed significantly less at 18 d, took longer to pupate and produced significantly smaller pupae than those fed on C. cajan pods”
t0“Helicoverpa armigera”
Claim · model-written summary
H. armigera larvae reared on C. scarabaeoides pods took longer to pupate than those fed on C. cajan pods.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- took longer to pupatee1
- Direction
- longere1
- Comparator
- C. cajane1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seven-day-old larvae reared on C. scarabaeoides pods weighed significantly less at 18 d, took longer to pupate and produced significantly smaller pupae than those fed on C. cajan pods”
t0“Helicoverpa armigera”
Claim · model-written summary
H. armigera larvae reared on C. scarabaeoides pods produced significantly smaller pupae than those fed on C. cajan pods.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- pupaee1
- Direction
- smallere1
- Comparator
- C. cajane1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Seven-day-old larvae reared on C. scarabaeoides pods weighed significantly less at 18 d, took longer to pupate and produced significantly smaller pupae than those fed on C. cajan pods”
t0“Helicoverpa armigera”
Claim · model-written summary
Larval period, larval weight and pupal weight of H. armigera reared on C. platycarpus were intermediate and significantly different from the other two species.
- Taxon
- C. platycarpusCajanus platycarpuse1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- Larval period and weight, and pupal weighte1
- Direction
- intermediatee1
- Comparator
- the other 2 speciese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Larval period and weight, and pupal weight when reared on C. platycarpus were intermediate and significantly different from the other 2 species”
t0“Helicoverpa armigera”
Claim · model-written summary
Differences in pupal duration of H. armigera were not significant between larvae reared on the three Cajanus species.
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- pupal duratione1
- Direction
- not significante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Differences in pupal duration were not significant between larvae reared on the 3 Cajanus species”
t0“Helicoverpa armigera”
Claim · model-written summary
H. armigera larvae on C. scarabaeoides spent significantly less time feeding than larvae on the other two species.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- time feedinge1
- Direction
- lesse1
- Comparator
- the oilier 2 speciese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Larvae on C. scarabaeoides spent significantly less time feeding and significantly more time off the pod than larvae on the oilier 2 species”
t0“Helicoverpa armigera”
Claim · model-written summary
H. armigera larvae on C. scarabaeoides spent significantly more time off the pod than larvae on the other two species.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- time off the pode1
- Direction
- moree1
- Comparator
- the oilier 2 speciese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Larvae on C. scarabaeoides spent significantly less time feeding and significantly more time off the pod than larvae on the oilier 2 species”
t0“Helicoverpa armigera”
Claim · model-written summary
Acetone extracts of C. cajan pods had a significant feeding stimulant effect on H. armigera larvae.
- Taxon
- C. cajanCajanus cajane1
- Treatment
- Acetone extractse1
- Interactor
- H. armigeraHelicoverpa armigerae1pest
- Outcome
- feeding stimulant effecte1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Acetone extracts of C. cajan and C. platycarpus pods had a significant feeding stimulant effect on H. armigera larvae, whereas extracts from C. scarabaeoides pods had no effect”
Claim · model-written summary
Acetone extracts of C. platycarpus pods had a significant feeding stimulant effect on H. armigera larvae.
- Taxon
- C. platycarpusCajanus platycarpuse1
- Treatment
- Acetone extractse1
- Interactor
- H. armigeraHelicoverpa armigerae1pest
- Outcome
- feeding stimulant effecte1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Acetone extracts of C. cajan and C. platycarpus pods had a significant feeding stimulant effect on H. armigera larvae, whereas extracts from C. scarabaeoides pods had no effect”
Claim · model-written summary
Acetone extracts from C. scarabaeoides pods had no effect on H. armigera larvae feeding.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Treatment
- extracts from C. scarabaeoides podse1
- Interactor
- H. armigeraHelicoverpa armigerae1pest
- Outcome
- feedinge1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Acetone extracts of C. cajan and C. platycarpus pods had a significant feeding stimulant effect on H. armigera larvae, whereas extracts from C. scarabaeoides pods had no effect”
Claim · model-written summary
Water extract of C. scarabaeoides pods had a significant antifeedant effect on H. armigera larvae.
- Taxon
- C. scarabaeoidesCajanus scarabaeoidese1
- Treatment
- Water extracte1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- antifeedant effecte1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Water extract of C. scarabaeoides pods had a significant antifeedant effect though similar extracts from C. cajan and C. platycarpus pods had no effect”
t0“Helicoverpa armigera”
Claim · model-written summary
Water extracts from C. cajan pods had no antifeedant effect on H. armigera larvae.
- Taxon
- C. cajanCajanus cajane1
- Treatment
- similar extractse1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- antifeedant effecte1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Water extract of C. scarabaeoides pods had a significant antifeedant effect though similar extracts from C. cajan and C. platycarpus pods had no effect”
t0“Helicoverpa armigera”
Claim · model-written summary
Water extracts from C. platycarpus pods had no antifeedant effect on H. armigera larvae.
- Taxon
- C. platycarpusCajanus platycarpuse1
- Treatment
- similar extractse1
- Interactor
- Helicoverpa armigeraHelicoverpa armigerat0pest
- Outcome
- antifeedant effecte1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Water extract of C. scarabaeoides pods had a significant antifeedant effect though similar extracts from C. cajan and C. platycarpus pods had no effect”
t0“Helicoverpa armigera”
The same questions in other papers
botanical · Helicoverpa armigera · Cajanus scarabaeoidesPositive and negative results
1 in the opposite direction
- positive
botanical · Helicoverpa armigera · Cajanus cajan (pigeon pea)Positive and negative results
2 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 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.