Dintinger Jacques, Reynaud Bernard, Letourmy Philippe, Marchand Jean-Leu.
1997. Evaluation of the efficiency and stability of the resistance to MSV from la Réunion introgressed in open-pollinated varieties.
In : Maize streak virus symposium = [Symposium sur le virus de la striure du maïs]. Anon
Autre titre : Evaluation de l'efficacité et de la stabilité de la résistance au MSV (Maize streak virus) à partir de l'introgression de variétés de la Réunion à pollinisation libre
Résumé : MSV resistant varieties has been released at CIRAD la Réunion by introgressing the Mascarene source of resistance from IRAT297. They were tested under artificial inoculation through a multilocation trial in Africa in order to compare them to other varieties against african MSV isolates. The aim was to evaluate the efficiency and the stability in Africa of this resistance. Symptomatological rating from each location were analysed showing highly significative differences between the varieties. The analysis of variance of the series of experiments underlined a significative interaction variety location which was also studied by principal component analysis. We observed that the varieties from la Réunion exhibited the strongest level of resistance in each location. The analysis resulted in the discrimination of varieties groups considering the lever and the variability of their resistances across the locations. The stability of this resistance is discussed.
Mots-clés Agrovoc : Zea mays, virus striure du maïs, variété, résistance aux maladies, Introgression, expérimentation
Mots-clés géographiques Agrovoc : La Réunion, Afrique, France
Classification Agris : H20 - Maladies des plantes
F30 - Génétique et amélioration des plantes
Auteurs et affiliations
- Dintinger Jacques, CIRAD-CA-CEREALES (REU)
- Reynaud Bernard, CIRAD-CA-CEREALES (REU)
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Letourmy Philippe, CIRAD-CA-URBI (FRA)
ORCID: 0000-0003-1040-0860
- Marchand Jean-Leu, CIRAD-CA-CEREALES (FRA)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/389896/)
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