9 research outputs found
Méthylation de l’ADN et acétylation des histones : variations génotypiques chez des peupliers hybrides, impact d’un déficit hydrique et relations avec la productivité
Full text linkProduction physiology and morphology of **Populus** species and their hybrids grown under short rotation : 1 : clonal comparisons of 4-year growth and phenology
No full textImpact of poplar water status on leaf-beetle (Chrysomela populi) survival and feeding
No full textThe aim of this study is to assess the impact of drought on insect-tree relationships. Survival and feeding performances of leaf-beetles, Chrysomela populi put in cages with leaves of host-plants submitted to different levels of water stress were compared. Ninety 1-year-old poplar (Populus × euramericana) cuttings were grown in a greenhouse, and distributed into 3 groups submitted to different water treatments during six weeks. Adult C. populi were then encaged for four days with these cuttings, together with the five terminal leaves of a twig. Beetle survival and consumed leaf areas were then determined. Predawn leaf water potential values indicated that the drought treatments induced different levels of plant water stress. Plant height growth and total leaf numbers were reduced by plant stress. Beetle survival and leaf areas eaten were also reduced proportionally to plant water deficit. In conclusion, this experiment suggests that drought has a negative impact on C. populi survival and feeding. © INRA, EDP Sciences, 2010.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Differing influences of natural and artificial disturbances on riparian cottonwoods from prairie to mountain ecoregions in Alberta, Canada
No full textVariation génétique de la productivité, de caractères foliaires et de la discrimination isotopique vis-à -vis du carbone chez des hybrides de peuplier cultivés sur des sites contrastés
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