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    Author(s): P. Q. Thu; S. Kaneko; M. Imazu
    Date: 2018
    Source: In: Schoettle, Anna W.; Sniezko, Richard A.; Kliejunas, John T., eds. Proceedings of the IUFRO joint conference: Genetics of five-needle pines, rusts of forest trees, and Strobusphere; 2014 June 15-20; Fort Collins, CO. Proc. RMRS-P-76. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 217.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (224.0 KB)

    Description

    Surveys of two stem rust diseases of Pinus kesiya were implemented in Da Lat, Lam Dong province, in the Central Highlands of Vietnam. Symptoms of the first disease, a gall rust, are very similar to those of Cronartium quercuum in North America. Our surveys found many Quercus cambodiensis trees severely infected by the uredinial and telial states of a Cronartium species, later identified by microscopic characteristics as Cronartium orientale, which is native to eastern Asia. The aecial state of C. orientale occurs on various two-needle pines. We tentatively identified the gall rust on P. kesiya as C. orientale. We conducted inoculation experiments to demonstrate host alternation by C. orientale.

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    Citation

    Thu, P. Q.; Kaneko, S.; Imazu, M. 2018. Stem rust diseases of Pinus kesiya in Vietnam. In: Schoettle, Anna W.; Sniezko, Richard A.; Kliejunas, John T., eds. Proceedings of the IUFRO joint conference: Genetics of five-needle pines, rusts of forest trees, and Strobusphere; 2014 June 15-20; Fort Collins, CO. Proc. RMRS-P-76. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 217.

    Keywords

    genetic variation, genetic conservation, restoration, Pinus, Populus, rust fungi, disease resistance, climate change, Cronartium ribicola

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https://www.fs.usda.gov/treesearch/pubs/56740