Growth and phenology of hybrid aspen clones (Populus tremula L. x Populus tremuloides Michx.)

Short-rotation forestry with hybrid aspen (Populus tremula L.×P. tremuloides Michx.) in Northern Europe

This review summarises the knowledge about the ecology, breeding and management of hybrid aspen (Populus wettsteinii Hämet-Ahti P. tremula L. P. tremuloides Michx.). The review is restricted mainly to Northern Europe, where hybrid aspen has been most intensively studied and cultivated and where it has proved to be one of the fastest-growing hardwoods, suitable for the production of pulpand ener...

Developmental factors responsible for heterosis in aspen hybrids (Populus tremuloides x P. tremula.

Juvenile growth and bud set phenology were analyzed to study the biological basis of heterosis (hybrid vigor) in interspecific hybrids of Populus tremuloides Michx. (T) and P. tremula L. (Ta). Growth, measured as seedling volume index, was significantly higher for each of the two reciprocal interspecific crosses, T x Ta and Ta x T, than for the T x T intraspecific cross. Broad-sense heritabilit...

Effect of climate change on bud phenology of young aspen plants (Populus tremula. L)

Boreal tree species are excellent tools for studying tolerance to climate change. Bud phenology is a trait, which is highly sensitive to environmental fluctuations and thus useful for climate change investigations. However, experimental studies of bud phenology under simulated climate change outdoors are deficient. We conducted a multifactorial field experiment with single (T, UVA, UVB) and com...

Populations of aspen (Populus tremuloides Michx.) with different evolutionary histories differ in their climate occupancy

Quaking aspens (Populus tremuloides Michx.) are found in diverse habitats throughout North America. While the biogeography of aspens' distribution has been documented, the drivers of the phenotypic diversity of aspen are still being explored. In our study, we examined differences in climate between northern and southwestern populations of aspen, finding large-scale differences between the popul...

A Functional Framework for Improved Management of Western North American Aspen (Populus tremuloides Michx.)