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Effect of Soybean Hosts on the Development of the Soybean Hairy Caterpillar, Spilarctia casignata Koll. (Lepidoptera: Arctiidae)
Published online by Cambridge University Press: 19 September 2011
Abstract
Four soybean genotypes, PI 227687, PI 229358, Davis and Hardee were tested for their antixenosis and antibiosis to the soybean hairy caterpillar, Spilarctia casignata Koll. PI 227687 and PI 229358 showed greater antixenosis and strong antibiosis (high larval and pupal mortalities, reduced pupal weight, and a low growth index). Davis and Hardee were the favoured hosts as indicated by high larval preference based on increased feeding and low larval and pupal mortalities, increased pupal weight and a high growth index.
Résumé
Quatre types génétiques de soja, le PI 227687, le PI 229358, le Davis et le Hardee ont fait l'objet d'une étude en raison de leur antixenose et leur antibiose vis-à-vis de la chenille-à-poils du soja le Spilarctia casignata Koll. Le PI 227687 et le PI 229358 ont manifesté une grande antixenose et une forte antibiose (d'où taux élevé de mortalité chez les larves et les chrisalides, diminution de poids chez les chrisalides et faible indice de croissance). Le Davis et le Hardee, par contre, se sont révelés être des hôtés favorables à la chenille-à-poils comme cela a dû se faire remarquer par une forte concentration de larves en quête d'une alimentation abondante, et aussi par un faible taux de mortalité chez les larves et les chrisalides, une remarquable augmentation du poids chez les chrisalides, et un indice de croissance élevé.
Keywords
- Type
- Articles
- Information
- International Journal of Tropical Insect Science , Volume 12 , Issue 1-2-3: Current Topics in Tropical Entomology , June 1991 , pp. 189 - 192
- Copyright
- Copyright © ICIPE 1991
References
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