2.08.04 - Poplars and willows



Venues of IX and X International Poplar Symposia Announced

IUFRO's Poplar and Willow Genetics Working Party 2.08.04, convenes the International Poplar Symposium (IPS) every four years for the presentation and discussion of the most recent and important scientific findings in Populus and Salix genetics, molecular biology, physiology, ecology, wood science, etc.

The Working Party 2.08.04 is pleased to announce that the folliwng venues have been selected to host the IX and the X International Poplar Symposium (IPS-IX and IPS-X).

  • IPS-IX: Starkville, Mississippi, USA; 2026
  • IPS-X: Palencia, Spain; 2030
View all entries


Ronald S. Zalesny Jr., United States


Meng-Zhu Lu, China

Marzena Niemczyk, Poland

Nerea Oliveira, Spain

Joris Van Acker, Belgium

About Unit

Working Party 2.08.04 brings together all aspects of research in IUFRO on breeding and genetic resources of Populus sp. and Salix sp. Major functions of this Unit are to facilitate information flow on breeding and selection, genomics, and conservation, to facilitate exchange of material and to provide for informative meetings, workshops and field trips. Working Party 2.08.04 works closely with the International Poplar Commission's Working Party on Poplar Willow Genetics, Conservation and Improvement.

State of Knowledge

Several key scientific and programmatic challenges will ensure the future of sustainable poplar cultivation.  Among these, it is striking how many programs are reliant upon cultivars that are 30 years and older.  This is, in nearly all cases, a consequence of inadequate access to improved breeding populations of both native and exotics species.  A coordinated plan of international cooperation for the exchange of reproductive materials and hybridization services, perhaps best facilitated by the poplar genetics working groups of IPC and IUFRO should be made a high priority.  A plan should strongly emphasize the need for population breeding approach as opposed to a strictly non-recurrent first generation hybridization appoach that is also too commonly the sole breeding strategy of many programs. The process of evaluation of both seedling- and clonal-based test populations would benefit immeasureably from a standardized protocol that would detail the finer features of appropriate experimental designs, selection criteria and intensities appropriate for varying stages of a multiple-stage test procedure, and newer methods of quantitiative analyses including the restricted maximum likelihood procedure.