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Titre :
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Relationship Between Number of Greenbugs (Homoptera Aphididae) and Damage to Wheat Seedlings
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Auteurs :
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R. Burton ;
J. Burd
|
|
Type de document :
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article/chapitre/communication
|
|
Année de publication :
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1993
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Format :
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263-268
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Langues:
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= Anglais
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Mots-clés:
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Perte de rendement
;
Comptage
;
Index
;
Regression simple
;
Aphididae
;
Schizaphis graminum
;
Gramineae
;
Cereale
;
Triticum aestivum
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Résumé :
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Investigations of plant resistance to greenbugs in the laboratory and greenhouse require sufficient plant damage to show susceptibility but not allow damage to become critical. This study was conducted to determine the minimum number of greenbugs per plant needed to significantly damage susceptible wheat seedlings. Ten or more greenbugs feeding on susceptible wheat seedlings for 14 days (140 cumulative aphid days) were required to reduce growth components to the point that they differed significantly from the controls. Root dry weight was the most sensitive plant measure of greenbug damage. Root fresh weight values also showed significant differences (P
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|
Source :
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Southwestern Entomologist - 0147-1724, vol. 18, n° 4
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