Breeding for disease resistance is becoming more important in improvement programs for
forest trees. Many such programs were initiated up to 30-40 years ago with phenotypic …

The following topics are reviewed:(1) concepts in host plant resistance (HPR)-phylogenetic
and biogeographical concepts, genetic concepts, gene management and deployment …

• Linking roots and ectomycorrhizas (EcM) to individual host trees in the field is required to
test whether individual trees support different ectomycorrhizal communities.• Here we …

Individuals were selected for resistance against the imperfect fungus Seiridium cardinale
Wag in six common cypress populations (Cupressus sempervirens L.) in Greece. A total of …

The independent and interacting effects of plant genotype and site on the acceptability of
Picea glauca to Zeiraphera canadensis and on plant suitability for egg development were …

Scots pine (Pinus sylvestris L.) is host for many different biotic agents. Under natural
conditions of virgin forests a dynamic equilibrium can be assumed between populations of …

According to the literature the following evidence suggests racial variation in white pine
blister rust: changes over site in general level of resistance; interaction of needle spot color …

The genetic consequences of any silvicultural treatment are describable as changes in gene
frequencies resulting from selection, migration, mutation, and random genetic drift. The …

El cinípido Andricus quercuslaurinus ha afectado miles de hectáreas de bosques de
encinos Quercus laurina y Quercus affinis en Hidalgo, México. La incidencia de esta avispa …

Most of the world's fruit trees, many ornamental plants, all the main root vegetables, and
some forest trees are increased by vegetative propagation and not from seeds. Recent …