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Silva Fennica 1926-1997
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Articles containing the keyword 'epidemics'

Category : Research article

article id 10568, category Research article
Juha Kaitera, Leena Aarnio, Tiina Ylioja, Jouni Karhu. (2021). Naohidemyces vaccinii sporulates on wild species of ground flora in Finnish Norway spruce seed orchards but Thekopsora areolata does not on other species than Prunus. Silva Fennica vol. 55 no. 5 article id 10568. https://doi.org/10.14214/sf.10568
Keywords: Picea abies; cherry-spruce rust; epidemics; Prunus; blueberry rust; Naohidemyces vaccinii
Highlights: Cherry-spruce rust, Thekopsora areolata, was not found on any of the common species of ground vegetation in Finnish Norway spruce seed orchards; Blueberry rust, Naohidemyces vaccinii, was common on Vaccinium myrtillus and occasional on V. vitis-idaea in all seed orchards; Thekopsora areolata occurs only on Prunus in Finnish Norway spruce seed orchards.
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article id 10446, category Research article
Juha Kaitera, Tuomas Kauppila, Jarkko Hantula. (2021). Assessment of the potential of Norway-spruce-seed-orchard associated plants to serve as alternate hosts of Thekopsora areolata. Silva Fennica vol. 55 no. 2 article id 10446. https://doi.org/10.14214/sf.10446
Keywords: Picea abies; cherry-spruce rust; epidemics; rust diseases; Prunus; heteroecism
Highlights: Prunus is the only alternate host of cherry-spruce rust identified in this study; Cherry-spruce rust does not infect plants that belong to common ground vegetation flora in Finnish Norway spruce seed orchards; Spores from different Finnish cherry-spruce rust populations are similarly pathogenic on Prunus; Disease control should be focused only on Prunus in seed orchards.
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article id 10422, category Research article
Juha Kaitera, Jouni Karhu. (2020). Temperature range for germination of Thekopsora areolata aeciospores from Finnish Norway spruce seed orchards. Silva Fennica vol. 55 no. 1 article id 10422. https://doi.org/10.14214/sf.10422
Keywords: Picea abies; cherry-spruce rust; cones; epidemics; rust diseases
Highlights: Cherry-spruce rust was able to germinate at very low temperature (6 °C) close to the temperature when thermal growth starts; Optimum spore germination occurred between 15–24 °C; High temperature of 30 °C drastically reduced germination; Temperature had the most significant effect on germination, while spore source had less significant effect and agar media a non-significant effect on germination in a Fixed Effects model.
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