Classification of Selected Seed Material in Finland : Actual Problems of the Legislation of Forest Reproductive Material and the Need for Harmonization of Rules at an International Level

1992

S. 45-51

7 Lit. Ang.

Unselbständiges Werk

200065045

The decree controlling the sale of forestation material issued by the Ministry of Agriculture and Forestry defines 10 categories of origin for reproductive material. The forestation material must meet the requirements of one of these categories in order to be fit for sale. The Finnish Forest Research Institute is responsible for maintaining the registers for each category. From the practical point of view the most important categories are those which apply to young and mature seed orchards. The most important species is Scots pine. Measurements of pollen production are carried out as a routine measure in order to define the proportion of background pollination in a seed orchard. As there is some evidence to suggest that this method does not give a reliable estimate of mating patterns in a seed orchard, the effectivity of the present system needs to be evaluated.