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Research article - Peer-reviewed, 2020

Strategies for deployment of reproductive material under supply limitations - a case study of Norway spruce seed sources in Sweden

Lundstromer, Jenny; Karlsson, Bo; Berlin, Mats

Abstract

The aim of this study was to analyze and compare the performance of Norway spruce seed sources from Swedish stands of East European origin (SweEast) with material from Swedish (SweSO) and East European (EastSO) seed orchards, and with material from Swedish (SweS) and East European (EastS) unimproved stands. The seed sources were field tested at six locations in southern Sweden and assessed for growth and phenology. The assessment of growth traits indicated that trees from SweSO and EastSO had 9-15% greater growth with respect to tree height and diameter in comparison to trees from Swedish local unimproved stands (SweS). Trees from SweEast and EastS showed around 5-7% greater growth. With respect to phenological traits, the expected later bud burst for EastS and EastSO in comparison to SweS, SweSO and SweEast was verified. However, SweEast exhibited earlier bud burst compared to EastS than what could be explained by pollination by Swedish pollen. This was explained by early land race formation for that trait. A strong positive correlation was observed between bud burst and frost damage, which indicates that earlier bud burst does indeed increase the risk of damage from late spring frost at frost-prone sites.

Keywords

Picea abies; spring frost; seed shortage; bud flush

Published in

Scandinavian Journal of Forest Research
2020, volume: 35, number: 8, pages: 495-505

Authors' information

Lundströmer, Jenny
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Karlsson, Bo
Forestry Research Institute of Sweden, Skogforsk
Berlin, Mats
Forestry Research Institute of Sweden, Skogforsk

UKÄ Subject classification

Forest Science

Publication Identifiers

DOI: https://doi.org/10.1080/02827581.2020.1833979

URI (permanent link to this page)

https://res.slu.se/id/publ/109040