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The effects of flooding and Phytophthora alni infection on black alder

Author

Listed:
  • V. Strnadová

    (Silva Tarouca Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech Republic)

  • K. Černý

    (Silva Tarouca Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech Republic)

  • V. Holub

    (Silva Tarouca Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech Republic)

  • B. Gregorová

    (Silva Tarouca Research Institute for Landscape and Ornamental Gardening, Průhonice, Czech Republic)

Abstract

The influences of long-term flooding and Phytophthora alni subsp. alni infection on the growth and development of 4-year-old Alnus glutinosa (black alder) saplings were investigated. The black alder saplings were divided into four groups and then subjected to combinations of both factors - flooded and inoculated with pathogen, flooded non-inoculated, non-flooded inoculated, and control. The biomass of the living roots and actinorrhizae, increase in stem length, length of leaves, rate of chlorotic foliage, amount of foliage biomass and length of stem necrosis were assessed after seven weeks. Both factors, flooding and P. alni infection significantly affected the black alder. In addition, a significant effect of interaction was observed. The inoculated flooded group had a substantially lower biomass weight of living roots, actinorrhiza and leaves than the other groups. The necroses caused by the pathogen in the flooded group were more extensive than those in the non-flooded one. These findings demonstrate that the simultaneous incidence of stress caused by flooding and P. alni infection is highly dangerous for black alder.

Suggested Citation

  • V. Strnadová & K. Černý & V. Holub & B. Gregorová, 2010. "The effects of flooding and Phytophthora alni infection on black alder," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 56(1), pages 41-46.
    • Handle: RePEc:caa:jnljfs:v:56:y:2010:i:1:id:67-2009-jfs
    DOI: 10.17221/67/2009-JFS
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    References listed on IDEAS

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    1. I. Vyhlídková & D. Palovčíková & M. Rybníček & P. Čermák & L. Jankovský, 2005. "Some aspects of alder decline along the Lužnice River," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 51(9), pages 381-391.
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    Cited by:

    1. K. Černý & V. Strnadová, 2012. "Winter survival of Phytophthora alni subsp. alni in aerial tissues of black alder," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 58(7), pages 328-336.
    2. P. Štochlová & K. Novotná & K. Černý, 2012. "Factors affecting the development of Phytophthora alni ssp. alni infections in Alnus glutinosa L," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 58(3), pages 123-130.

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