Abstract
The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant, was studied in the field, using four varieties, two hairy and two glabrous. It was found that there was a considerable difference in the number of eggs laid on the hairy and glabrous varieties, and also in the place where eggs were laid. These differences were observed when the hairy varieties were planted alternately with the glabrous ones. However, the difference in the number of eggs laid was not found when all pods of the soybean plants were removed. This treatment of the hairy varieties caused a great decrease in the number of eggs laid, while on the glabrous varieties this was not the case. These observations suggest that two factors operate (a) varietal preference (b) site preference within plants, e.g. the hairy pod is the most attractive oviposition site. ZUSAMMENFASSUNG DIE WIRTSPFLANZENPRÄFERENZ DES SOJABOHNENBOHRERS , GRAPHOLITHA GLICINIVORELLA MATSUMURA. 1. DIE EIABLAGE Die Wirtspflanzenpräferenz des Sojabohnenbohrers, eine wichtige Erscheinung hinsichtlich der Resistenz der Sojabohnenpflanze, wurde im Freiland unter Benutzung von je zwei Varietäten behaarter und unbehaarter Sojabohnen untersucht. Es zeigte sich, daß sowohl hinsichtlich der Anzahl als auch der Lokalisation der abgelegten Eier zwischen den haarigen und unbehaarten Varietäten der Bohnen ein beträchtlicher Unterschied besteht. Diese beiden Unterschiede wurden auch dann festgestellt, wenn die haarigen Varietäten im Wechsel mit den haarlosen gepflanzt worden waren. Als jedoch sämtliche Schoten aller Sojabohnenpflanzen künstlich entfernt wurden, konnte kein Unterschied in der Anzahl der abgelegten Eier mehr gefunden werden. Diese Behandlung verursachte bei den haarigen Varietäten eine übermäßige Verminderung der Eizahl, während dies bei den haarlosen nicht der Fall was. Diese Beobachtungen zeigen offenbar, daß es hinsichtlich dieses Gegenstandes zwei Haupterscheinungen gibt, nähmlich Inter‐ und Intravarietätenpräferenz, und daß die erstere stark von der Anwesenheit der “haarigen Hülse” beeinflußt wird, die als die anziehendste Eiablagestelle zu gelten hat.
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Claims 7
Claim · model-written summary
There was a considerable difference in the number of eggs laid by the soybean pod borer on hairy and glabrous soybean varieties.
- Taxon
- soybean
Glycine maxe0 - Material
- hairye1
- Interactor
- soybean pod borere0pest
- Outcome
- number of eggs laide1
- Comparator
- glabrous varietiese1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“there was a considerable difference in the number of eggs laid on the hairy and glabrous varieties”
Claim · model-written summary
The place where eggs were laid differed between hairy and glabrous soybean varieties.
- Taxon
- soybeanGlycine maxe0
- Interactor
- soybean pod borere0pest
- Outcome
- place where eggs were laide1
Not reportedMaterialComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“and also in the place where eggs were laid”
Claim · model-written summary
The differences in egg number and egg location were observed when hairy varieties were planted alternately with glabrous ones.
- Taxon
- soybeanGlycine maxe0
- Interactor
- soybean pod borere0pest
- Outcome
- differencese1
- Qualifier
- hairy varieties were planted alternately with the glabrous onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“These differences were observed when the hairy varieties were planted alternately with the glabrous ones”
Claim · model-written summary
No difference in the number of eggs laid between hairy and glabrous varieties was found when all pods of the soybean plants were removed.
- Taxon
- soybeanGlycine maxe0
- Treatment
- all pods of the soybean plants were removede1
- Interactor
- soybean pod borere0pest
- Outcome
- number of eggs laide1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“the difference in the number of eggs laid was not found when all pods of the soybean plants were removed”
Claim · model-written summary
Removing pods of the hairy soybean varieties caused a great decrease in the number of eggs laid.
- Taxon
- soybeanGlycine maxe0
- Material
- hairy varietiese1
- Treatment
- This treatmente1
- Interactor
- soybean pod borere0pest
- Outcome
- number of eggs laide1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“This treatment of the hairy varieties caused a great decrease in the number of eggs laid”
Claim · model-written summary
Removing pods of the glabrous soybean varieties did not cause a decrease in the number of eggs laid.
- Taxon
- soybeanGlycine maxe0
- Material
- glabrous varietiese1
- Interactor
- soybean pod borere0pest
- Outcome
- this was not the casee1
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“while on the glabrous varieties this was not the case”
Claim · model-written summary
The hairy pod is the most attractive oviposition site, suggesting varietal preference and site preference within plants.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- hairy pode1
- Interactor
- soybean pod borere0pest
- Outcome
- most attractive oviposition sitee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The host plant preference of the soybean pod borer, an important factor in the resistance of the soybean plant”
e1“the hairy pod is the most attractive oviposition site”