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Research article - Peer-reviewed, 2008

Balanced forest tree improvement can be enhanced by selecting among many parents but maintaining balance among grandparents

Lindgren, Dag; Danusevicius, Darius; Rosvall, Ola


A model for a balanced tree breeding program that considers genetic gain and cost was used to assess the benefits of increasing the breeding population to allow for a component of among-parent selection while maintaining an equal contribution among grandparents, rather than relaying on within-family selection with an equal parental representation. The scenario used in this study had characteristics similar to those of the phenotypic selection strategy for Scots pine ( Pinus sylvestris L.) in Sweden. The results showed that investments in a greater number of parents and families to allow for among-parent selection resulted in a markedly higher genetic gain. The among-parent selection component increased the genetic gain by as much as 70% in a scenario with a high budget and no family creation costs and by as much as 20% in a scenario with a low budget and high family creation costs.

Published in

Canadian Journal of Forest Research
2008, volume: 38, number: 11, pages: 2797-2803
Publisher: NRC Research Press (Canadian Science Publishing)

Authors' information

Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Danusevicius, Darius
Lithuanian Forest Research Institute
Rosvall, Ola
Forestry Research Institute of Sweden, Skogforsk

UKÄ Subject classification

Forest Science

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