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Genotypic variability of sugarcane resistance to the aphid Melanaphis sacchari, vector of the Sugarcane yellow leaf virus

Fartek Benjamin, Nibouche Samuel, Atiama-Nurbel Toulassi, Reynaud Bernard, Costet Laurent. 2014. Genotypic variability of sugarcane resistance to the aphid Melanaphis sacchari, vector of the Sugarcane yellow leaf virus. Plant Breeding, 133 (6) : pp. 771-776.

Journal article ; Article de revue à facteur d'impact
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Quartile : Q2, Sujet : AGRONOMY / Quartile : Q2, Sujet : PLANT SCIENCES / Quartile : Q3, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Abstract : The objective of this study was to analyse the genotypic variability of sugarcane resistance to the main aphid vector of the Sugarcane yellow leaf virus (ScYLV) (Polerovirus, Luteoviridae), Melanaphis sacchari. We assessed the incidence of aphids in a field trial comparing 181 sugarcane cultivars. Based on the percentage of infested leaves, aphid incidence was scored every two weeks during three cropping seasons. Analysis of variance revealed highly significant genotype, and genotype 9 year variance, and high broad sense heritability. Using semivariograms, we showed that the alpha lattice design used in the field trial was able to cope with spatial correlation issues caused by the patchy nature of aphid infestations. Twenty-two aphid resistant cultivars were identified. A laboratory study of the development of M. sacchari on four of these 22 resistant cultivars confirmed the resistant status of three of them. We observed modest positive phenotypic and genetic correlations between the aphid incidence and the incidence of ScYLV. The 22 cultivars resistant to M. sacchari showed twofold lower mean virus incidence than the remaining 159 cultivars. (Résumé d'auteur)

Mots-clés Agrovoc : Saccharum officinarum, Melanaphis, Résistance aux organismes nuisibles, Variété, Résistance génétique, Variation génétique, Vecteur de maladie, Virus des végétaux, Lutéovirus, Expérimentation au champ, Expérimentation en laboratoire, Saccharum spontaneum, Saccharum, Dynamique des populations

Mots-clés géographiques Agrovoc : Réunion

Mots-clés complémentaires : Melanaphis sacchari, Sugarcane yellow leaf virus

Classification Agris : F30 - Plant genetics and breeding
H20 - Plant diseases

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Fartek Benjamin, Université de la Réunion (REU)
  • Nibouche Samuel, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0003-2675-1382
  • Atiama-Nurbel Toulassi, Université de la Réunion (REU)
  • Reynaud Bernard, CIRAD-BIOS-UMR PVBMT (REU)
  • Costet Laurent, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0003-3199-2885

Source : Cirad - Agritrop (https://agritrop.cirad.fr/574457/)

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