Polymix breeding with selection forwards

Polymix breeding applied in an optimized way has the potential to be more powerful than current Scots pine breeding. Pollen can be resolved without being a major effort of the breeding operation provided a lab with relevant experience exists and wants to assist.
Currently I do not recommended to mix more than about 25 genotypes in a polycross mix. Otherwise the effort for the marker analyze will raise, indecisive situations will be more common and dependence of development and competence higher.