The increasing concern about ecological impacts of wood preservation chemicals has raised the int... more The increasing concern about ecological impacts of wood preservation chemicals has raised the interest in the natural durability of Scots pine (Pinus sylvestris L.) heartwood. Phenolic compounds—stilbenes—have been found to inhibit fungal growth, making heartwood more resistant to decay. There is a strong genetic component in the stilbene content of the heartwood in Scots pine, with a positive correlation between stilbene content in the heartwood of mother trees and their progenies. Vegetative propagation, i.e., somatic embryogenesis (SE) of Scots pine genotypes with high content of stilbenes could provide a way to produce more durable timber, assuming that there is no trade-off between SE propagation and capacity for high stilbene synthesis. To study this, we made SE initiations from parent genotypes with high and low content of stilbenes in their heartwood, using seed embryos from both open-pollinations and controlled crossings as explants. The success of SE was followed from init...
Osajulkaisut: Osa I : Hyonteistuotannon materiaaliselvitys. Heli Horppu, Jan Hulshof, Heini Kosku... more Osajulkaisut: Osa I : Hyonteistuotannon materiaaliselvitys. Heli Horppu, Jan Hulshof, Heini Koskula, Biotus Oy. Osa II : Markkinaselvitys. Johanna Tanhuanpaa, Invenire Market Intelligence Oy. Osa II : Lainsaadanto ja tyoturvallisuusselvitys. Pirjo Rinnepelto, Apila Group Oy
Tutkimuksen tarkoituksena on löytää suomalaiset, tutkitusti parhaimmat ja ainutlaatuisimmat aromi... more Tutkimuksen tarkoituksena on löytää suomalaiset, tutkitusti parhaimmat ja ainutlaatuisimmat aromihumalat viljelijöiden, panimoiden tai muiden yritysten käyttöön.
The process of digitising natural history collection specimens at Digitarium
Digitarium is a joint initiative of the Finnish Museum of Natural History and the University of E... more Digitarium is a joint initiative of the Finnish Museum of Natural History and the University of Eastern Finland. It was established in 2010 as a dedicated shop for large scale digitisation of collections. The paper gives an overview of the steps of digitisation process, including tagging, imaging, data entry, georeferencing, filtering, validation, publishing, and archiving. A functional model is presented. The work at Digitarium is independent of any collection management software. Instead, the digitisation process is managed through XML-documents and versioning. All specimens are imaged and distance workers take care of the digitisation from the images. Data and images are published through Morphbank and GBIF.
Interactive effects of defoliation and climate change on compensatory growth of silver birch seed... more Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings. Silva Fennica vol. 47 no. 3 article id 964. 14 p. Highlights • The main components affecting growth compensation in silver birch seedlings are the timing and severity of foliage damage. • The ability to compensate growth is also dependent upon the limits of temperature and nutrient availability. • The responses of birches imply that folivory does not necessarily lead to reduced net productivity under changing climate.
Eight clones of dark-leaved willow (Salix myrsinifolia Salisb.) and two S. myrsinifolia x phylici... more Eight clones of dark-leaved willow (Salix myrsinifolia Salisb.) and two S. myrsinifolia x phylicifolia hybrids were cultivated for two years (2001-2003) in Kaavi and Punkaharju, Eastern Finland by different cultivation methods with the aim of comparing the effects of cultivation method and clone on plant growth, total salicylate yield and willow resistance for herbivores and plant pathogens. The cultivation methods included different combinations of soil management practices, black plastic mulch and fertilisation. Willow growth was measured in Kaavi and in Punkaharju six times during the growing seasons 2001-2002, and the above-ground biomass of the willows was measured at the end of the growing season 2002. The severity of Melampsora-rust was calculated from leaf samples collected at the end of the growing seasons 2001 and 2002. The feeding damage caused by insects was measured in the field during the growing seasons and winter browsing by voles was studied in the field and in the laboratory feeding experiment. Concentrations of salicylates and other phenolic glucosides and condensed tannins were analysed from the leaves and bark of the willows grown in Kaavi. The yield of total salicylates after twoyear cultivation was also measured. The use of plastic mulch doubled willow growth and total salicylate yield compared to the control treatment in unmulched soil. Rust severity and insect feeding seemed, however, to be more dependent on willow clone. Vole browsing in the field and in the laboratory was higher amongst the plants grown in unmulched soil compared to those grown in plastic mulch. Feeding was controlled by the diameter of the twig and the concentrations of salicylates and condensed tannins in the bark. Generally, willow chemistry was highly dependent on the clone, and the effects of cultivation methods on plant chemistry also differed amongst the clones. These results indicate that for reliable cultivation, it is important to match the cultivation method with the selected plant material.
Willow based herbal products containing salicin and its derivatives can be used to alleviate ache... more Willow based herbal products containing salicin and its derivatives can be used to alleviate aches and fevers. To guarantee the high quality of the willow drugs and moderate low
The increasing concern about ecological impacts of wood preservation chemicals has raised the int... more The increasing concern about ecological impacts of wood preservation chemicals has raised the interest in the natural durability of Scots pine (Pinus sylvestris L.) heartwood. Phenolic compounds—stilbenes—have been found to inhibit fungal growth, making heartwood more resistant to decay. There is a strong genetic component in the stilbene content of the heartwood in Scots pine, with a positive correlation between stilbene content in the heartwood of mother trees and their progenies. Vegetative propagation, i.e., somatic embryogenesis (SE) of Scots pine genotypes with high content of stilbenes could provide a way to produce more durable timber, assuming that there is no trade-off between SE propagation and capacity for high stilbene synthesis. To study this, we made SE initiations from parent genotypes with high and low content of stilbenes in their heartwood, using seed embryos from both open-pollinations and controlled crossings as explants. The success of SE was followed from init...
Osajulkaisut: Osa I : Hyonteistuotannon materiaaliselvitys. Heli Horppu, Jan Hulshof, Heini Kosku... more Osajulkaisut: Osa I : Hyonteistuotannon materiaaliselvitys. Heli Horppu, Jan Hulshof, Heini Koskula, Biotus Oy. Osa II : Markkinaselvitys. Johanna Tanhuanpaa, Invenire Market Intelligence Oy. Osa II : Lainsaadanto ja tyoturvallisuusselvitys. Pirjo Rinnepelto, Apila Group Oy
Tutkimuksen tarkoituksena on löytää suomalaiset, tutkitusti parhaimmat ja ainutlaatuisimmat aromi... more Tutkimuksen tarkoituksena on löytää suomalaiset, tutkitusti parhaimmat ja ainutlaatuisimmat aromihumalat viljelijöiden, panimoiden tai muiden yritysten käyttöön.
The process of digitising natural history collection specimens at Digitarium
Digitarium is a joint initiative of the Finnish Museum of Natural History and the University of E... more Digitarium is a joint initiative of the Finnish Museum of Natural History and the University of Eastern Finland. It was established in 2010 as a dedicated shop for large scale digitisation of collections. The paper gives an overview of the steps of digitisation process, including tagging, imaging, data entry, georeferencing, filtering, validation, publishing, and archiving. A functional model is presented. The work at Digitarium is independent of any collection management software. Instead, the digitisation process is managed through XML-documents and versioning. All specimens are imaged and distance workers take care of the digitisation from the images. Data and images are published through Morphbank and GBIF.
Interactive effects of defoliation and climate change on compensatory growth of silver birch seed... more Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings. Silva Fennica vol. 47 no. 3 article id 964. 14 p. Highlights • The main components affecting growth compensation in silver birch seedlings are the timing and severity of foliage damage. • The ability to compensate growth is also dependent upon the limits of temperature and nutrient availability. • The responses of birches imply that folivory does not necessarily lead to reduced net productivity under changing climate.
Eight clones of dark-leaved willow (Salix myrsinifolia Salisb.) and two S. myrsinifolia x phylici... more Eight clones of dark-leaved willow (Salix myrsinifolia Salisb.) and two S. myrsinifolia x phylicifolia hybrids were cultivated for two years (2001-2003) in Kaavi and Punkaharju, Eastern Finland by different cultivation methods with the aim of comparing the effects of cultivation method and clone on plant growth, total salicylate yield and willow resistance for herbivores and plant pathogens. The cultivation methods included different combinations of soil management practices, black plastic mulch and fertilisation. Willow growth was measured in Kaavi and in Punkaharju six times during the growing seasons 2001-2002, and the above-ground biomass of the willows was measured at the end of the growing season 2002. The severity of Melampsora-rust was calculated from leaf samples collected at the end of the growing seasons 2001 and 2002. The feeding damage caused by insects was measured in the field during the growing seasons and winter browsing by voles was studied in the field and in the laboratory feeding experiment. Concentrations of salicylates and other phenolic glucosides and condensed tannins were analysed from the leaves and bark of the willows grown in Kaavi. The yield of total salicylates after twoyear cultivation was also measured. The use of plastic mulch doubled willow growth and total salicylate yield compared to the control treatment in unmulched soil. Rust severity and insect feeding seemed, however, to be more dependent on willow clone. Vole browsing in the field and in the laboratory was higher amongst the plants grown in unmulched soil compared to those grown in plastic mulch. Feeding was controlled by the diameter of the twig and the concentrations of salicylates and condensed tannins in the bark. Generally, willow chemistry was highly dependent on the clone, and the effects of cultivation methods on plant chemistry also differed amongst the clones. These results indicate that for reliable cultivation, it is important to match the cultivation method with the selected plant material.
Willow based herbal products containing salicin and its derivatives can be used to alleviate ache... more Willow based herbal products containing salicin and its derivatives can be used to alleviate aches and fevers. To guarantee the high quality of the willow drugs and moderate low
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