Le Guen Vincent, Seguin Marc, Mattos Carlos Raimunto Reis. 2000. Qualitative resistance of Hevea to Phyllachora huberi P. Henn. Euphytica, 112 (2) : pp. 211-217.
Autre titre : Résistance qualitative de Hevea à Phyllachora huberi P. Henn
Abstract : Qualitative observations of Hevea spp. resistance to Phyllachora huberi were carried out on 200 clones in a collection and 21 full-sib progenies under natural conditions of infestation. A total of 42 clones, mostly originating from the natural range of the Hevea genus, and at least two species (H. brasiliensis and H. benthamiana) revealed total resistance to the parasite. For nine of the thirteen 'resistant x susceptible' and 'resistant x resistant' progenies studied, the ratio of susceptible : resistant plants suggested the existence of a total resistance mechanism produced by a dominant allele at a single locus for the P. huberi race(s) present at the study site. For three of the progenies involving the same resistant parent, it was possible to locate the gene (called Phr) at 14.7 cm from the adh isozyme locus. (Résumé d'auteur)
Mots-clés Agrovoc : Hévéa, Hevea brasiliensis, Résistance aux maladies, Phyllachorales, Maladie fongique, Race physiologique, Isoenzyme, Résistance génétique, Épreuve sur la descendance, Hérédité
Mots-clés géographiques Agrovoc : Brésil
Mots-clés complémentaires : Hevea benthamiana, Hevea pauciflora, Phyllachora huberi
Classification Agris : H20 - Plant diseases
F30 - Plant genetics and breeding
Auteurs et affiliations
- Le Guen Vincent, CIRAD-CP-HEVEA (GUF)
- Seguin Marc, CIRAD-CP-HEVEA (THA)
- Mattos Carlos Raimunto Reis, Michelin Brésil (BRA)
Autres liens de la publication
- Document en bibliothèque
- Localisation du document : CD_BR9122 [(Bibliothèque de Lavalette)] ; CD_BR9121 [(Bibliothèque de Lavalette)] ; CD_PE403 [(Bibliothèque de Lavalette)]
Source : Cirad - Agritrop (https://agritrop.cirad.fr/476613/)
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