Abstract
Range-wide provenance tests of black spruce (Piceamariana (Mill.) B.S.P.) established at 10 locations in the Maritime provinces were evaluated. Based on the 14-year data, the genetic variation in the species is predominantly clinal. The magnitude of provenance × location interactions is moderately large, and stability of provenances varies widely. Trees of Maritime origin generally performed well, suggesting that there is little advantage in going outside the region to obtain black spruce seed. Seed transfer recommendations are summarized, and three overlapping breeding zones are delineated for the Maritime provinces.
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Claims 6
Claim · model-written summary
Genetic variation was predominantly clinal.
- Taxon
- black spruce
Picea marianat0 - Outcome
- genetic variation in the species is predominantly clinale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the genetic variation in the species is predominantly clinal”
t0“black spruce”
Claim · model-written summary
Provenance by location interactions were moderately large.
- Taxon
- black spruce
Picea marianat0 - Outcome
- magnitude of provenance × location interactionse0
- Direction
- moderately largee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The magnitude of provenance × location interactions is moderately large”
t0“black spruce”
Claim · model-written summary
Provenance stability varied widely.
- Taxon
- black spruce
Picea marianat0 - Outcome
- stability of provenancese0
- Direction
- varies widelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“stability of provenances varies widely”
t0“black spruce”
Claim · model-written summary
Trees of Maritime origin generally performed well.
- Taxon
- black spruce
Picea marianat0 - Material
- Maritime origine0
- Outcome
- performed welle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Trees of Maritime origin generally performed well”
t0“black spruce”
Claim · model-written summary
The authors infer little advantage from sourcing black spruce seed outside the region.
- Taxon
- black spruce
Picea marianae0 - Outcome
- little advantage in going outside the region to obtain black spruce seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“there is little advantage in going outside the region to obtain black spruce seed”
Claim · model-written summary
Three overlapping breeding zones were delineated for the Maritime provinces.
- Taxon
- black spruce
Picea marianat0 - Outcome
- breeding zonese0
- Value
- threee0
- Setting
- Maritime provincese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“three overlapping breeding zones are delineated for the Maritime provinces”
t0“black spruce”