Growth and frost hardening of European aspen and backcross hybrid aspen as influenced by water and nitrogen |
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| Authors: | Suvi Nikula Sirkku Manninen Pertti Pulkkinen |
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| Affiliation: | 1.Department of Biosciences,University of Helsinki,Helsinki,Finland;2.Department of Environmental Sciences,University of Helsinki,Helsinki,Finland;3.Haapastensyrj? Breeding Station,Finnish Forest Research Institute,L?yli?inen,Finland |
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| Abstract: | • Introduction The interactive effects of water and nitrogen (N) on frost hardiness are not well known in broad-leaved trees. Furthermore, new environmental conditions may favour naturally generated hybrids between native and introduced tree species over native species. |
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