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Resistance of sugarcane, Saccharum spp., to the sugarcane aphid, Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae), the vector of Sugarcane yellow leaf virus : S701M07 Insect related Interactions at a Multi-trophic Ecosystem

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Academic year: 2021

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Keywords:Saccharum spp., aphids, antibiosis, antixenosis, EPG S701M07

Insect related Interactions at a Multi-trophic Ecosystem

S701

Resistance of sugarcane, Saccharum spp., to the sugarcane aphid, Melanaphis sacchari (Zehntner)

(Hemiptera: Aphididae), the vector of Sugarcane yellow leaf virus

Benjamin Fartek1, Samuel Nibouche2, Patrick Turpin3, Laurent Costet4, Bernard Reynaud5

1CIRAD, Universite de la Reunion, France, 2CIRAD, France, 3CIRAD, France, 4CIRAD, France, 5CIRAD, France

The sugarcane aphid Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae) is the main vector of the Sugarcane

yellow leaf virus (SCYLV; genus Polerovirus, family Luteoviridae), a disease of economical importance in the

sugarcane growing area. Resistance was detected in the sugarcane cultivar R 365, using a three-year field trial in La Reunion island. In laboratory, R 365 reduced aphid populations on potted plantlets and excised leaves. Using the electrical penetration graph technique, we detected a delayeddelayed aphid salivation in phloem and inhibition of passive phloem sap uptake in R 365. Future research to evaluate the resistance durability and efficiency against Melanaphis sacchari diversity and its potential for reduction of SCYLV incidence through sugarcane cultivation schemes will be discussed

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