Cristin-resultat-ID: 1892351
Sist endret: 8. juli 2021, 19:13
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Performance and Phenotypic Stability of Norway Spruce Provenances, Families, and Clones Growing under Diverse Climatic Conditions in Four Nordic Countries

Bidragsytere:
  • Tore Skrøppa og
  • Arne Steffenrem

Tidsskrift

Forests
ISSN 1999-4907
e-ISSN 1999-4907
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 12
Hefte: 2
Artikkelnummer: 230
Open Access

Importkilder

Scopus-ID: 2-s2.0-85101606445

Beskrivelse Beskrivelse

Tittel

Performance and Phenotypic Stability of Norway Spruce Provenances, Families, and Clones Growing under Diverse Climatic Conditions in Four Nordic Countries

Sammendrag

Genetic variation and phenotypic stability in Norway spruce were studied based on provenances, families, and clones planted in trials at 12 sites in four Nordic countries. The families were generated in a factorial cross between 10 parents of Norwegian origin and 10 parents of Eastern European origin, and the clones were propagated from seedlings within 20 of the same families. Traits analyzed were survival, proportion of trees with stem defects, and tree heights. Stability was analyzed by regression analyses with the genetic entries’ annual shoot increment as the dependent variable and the total site mean as an environmental index. Information about growth and phenology traits were available from short-term tests. For tree heights, significant variance components were present both among female and male parents, but not for their interactions, indicating that non-additive genetic effects are small. Genotype × environment interactions were significant at all three genetic levels, but their variance components had considerably lower values than the variance components estimated for the effects of families and clones. For the set of families of Norwegian origin, strong relationships were observed between the timing of annual shot elongation, mortality, and height growth. Large variation was found at all three genetic levels for phenotypic stability measured by regression coefficients. A positive relationship was present between the regression coefficient and the timing of annual shoot growth for families, indicating that later flushing families responded more to a high site index. The regression coefficient can be a useful supplement to the breeding value when selecting for superior and stable genotypes.

Bidragsytere

Tore Skrøppa

  • Tilknyttet:
    Forfatter
    ved Divisjon for skog og utmark ved Norsk institutt for bioøkonomi

Arne Steffenrem

  • Tilknyttet:
    Forfatter
    ved Divisjon for skog og utmark ved Norsk institutt for bioøkonomi
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