Abstract
Six-week-old, mycorrhiza-free, bareroot jack pine and black spruce seedlings were outplanted in ten reforestation sites, situated between 45–48° latitude N and 69–74° longitude W, within the province of Quebec, representing diverse operational forestry disturbances and ecological conditions.
Two months after outplanting, root systems of black spruce seedlings had fewer mycorrhizae than those of jack pine seedlings. Ectomycorrhizal colonization on black spruce seedlings did not vary significantly with the reforestation site. Percent mycorrhizal colonization for these seedlings was positively correlated with seedling dry weight while with the jack pine seedlings, mycorrhizal colonization varied significantly with the outplanting site and there was no correlation between mycorrhizal formation and seedling dry weight.
Multiple linear regressions showed pH to be a determinant soil factor for mycorrhizal colonization for the two species. Drainage was the other influential factor affecting colonization of black spruce while organic matter accumulation was more important for jack pine.
Inoculation with selected ectomycorrhizal fungi could be more important for black spruce than for jack pine seedlings.
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McAfee, B.J., Fortin, J.A. Ectomycorrhizal colonization on black spruce and jack pine seedlings outplanted in reforestation sites. Plant Soil 116, 9–17 (1989). https://doi.org/10.1007/BF02327251
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DOI: https://doi.org/10.1007/BF02327251