Resistance in hybrid aspen to pathogens
Wide-scale plantations of aspen (Populus tremula) and hybrid aspen (P. tremula x Populus tremuloides) have recently been established in Nordic and Baltic countries after the forest industry has become interested in aspen fibre. As the number of aspen stands increases, the fungal diseases will become...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.586.3190 2023-05-15T16:12:04+02:00 Resistance in hybrid aspen to pathogens Risto Kasanen Jarkko Hantula Timo Kurkela Martti Vuorinen Antti Komulainen Johanna Haapala Egbert Beuker The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.3190 http://www.skogoglandskap.no/filearchive/kasanena-2006-1-2.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.3190 http://www.skogoglandskap.no/filearchive/kasanena-2006-1-2.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.skogoglandskap.no/filearchive/kasanena-2006-1-2.pdf text ftciteseerx 2016-01-08T13:16:46Z Wide-scale plantations of aspen (Populus tremula) and hybrid aspen (P. tremula x Populus tremuloides) have recently been established in Nordic and Baltic countries after the forest industry has become interested in aspen fibre. As the number of aspen stands increases, the fungal diseases will become economically and ecologically important. Neofabraea populi was recorded for the first time in Fennoscandia early in 1960’s and subsequent observations of the disease were made later in 1970’s. In 2000’s, serious damage was observed in second generation of hybrid aspen in Finland. Since conditions in dense cop-pice stands are probably favourable for the spread of N. populi, the fungus could pose a potential threat for short-rotation coppices of hybrid aspen. To study the variation in the resistance of hybrid clones, artificial inoculations were made. The bark of a total of 100 trees (10 clones) was wounded and inocula were placed under the bark. The reactions of the trees and the advance of the cankers were recorded; resistance was considered to be expressed as healing of the cankers. In conclusion, hybrid aspen clones, despite of the fact that the original selection was based on only yield and fibre characteristics, show variability in resistance. A promising observation was made by combin-ing the results from separate trials; the best-growing clone is one of the most resistant ones. Thus it seems likely that there are possibilities to select for both growth and resis-tance traits in breeding. Text Fennoscandia Unknown |
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English |
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Wide-scale plantations of aspen (Populus tremula) and hybrid aspen (P. tremula x Populus tremuloides) have recently been established in Nordic and Baltic countries after the forest industry has become interested in aspen fibre. As the number of aspen stands increases, the fungal diseases will become economically and ecologically important. Neofabraea populi was recorded for the first time in Fennoscandia early in 1960’s and subsequent observations of the disease were made later in 1970’s. In 2000’s, serious damage was observed in second generation of hybrid aspen in Finland. Since conditions in dense cop-pice stands are probably favourable for the spread of N. populi, the fungus could pose a potential threat for short-rotation coppices of hybrid aspen. To study the variation in the resistance of hybrid clones, artificial inoculations were made. The bark of a total of 100 trees (10 clones) was wounded and inocula were placed under the bark. The reactions of the trees and the advance of the cankers were recorded; resistance was considered to be expressed as healing of the cankers. In conclusion, hybrid aspen clones, despite of the fact that the original selection was based on only yield and fibre characteristics, show variability in resistance. A promising observation was made by combin-ing the results from separate trials; the best-growing clone is one of the most resistant ones. Thus it seems likely that there are possibilities to select for both growth and resis-tance traits in breeding. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Risto Kasanen Jarkko Hantula Timo Kurkela Martti Vuorinen Antti Komulainen Johanna Haapala Egbert Beuker |
spellingShingle |
Risto Kasanen Jarkko Hantula Timo Kurkela Martti Vuorinen Antti Komulainen Johanna Haapala Egbert Beuker Resistance in hybrid aspen to pathogens |
author_facet |
Risto Kasanen Jarkko Hantula Timo Kurkela Martti Vuorinen Antti Komulainen Johanna Haapala Egbert Beuker |
author_sort |
Risto Kasanen |
title |
Resistance in hybrid aspen to pathogens |
title_short |
Resistance in hybrid aspen to pathogens |
title_full |
Resistance in hybrid aspen to pathogens |
title_fullStr |
Resistance in hybrid aspen to pathogens |
title_full_unstemmed |
Resistance in hybrid aspen to pathogens |
title_sort |
resistance in hybrid aspen to pathogens |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.3190 http://www.skogoglandskap.no/filearchive/kasanena-2006-1-2.pdf |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
http://www.skogoglandskap.no/filearchive/kasanena-2006-1-2.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.586.3190 http://www.skogoglandskap.no/filearchive/kasanena-2006-1-2.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1765997305271418880 |