Studies on the ecology and genetics of hybridization in Heterobasdion

  • Authors: Garbelotto, M.M.; Otrosina, William J.; Chapela, I.H.; Gonthier, P.
  • Publication Year: 2001
  • Publication Series: Miscellaneous Publication
  • Source: In: Proceedings of the IUFRO Working Party, September 16-22, Quebec City, Canada, eds. Laflamme, G.; Bérubé, J.A.; Bussières, G., p. 238-244

Abstract

The Heterobasidion taxonomic complex comprises two of the most important hngal tree pathogens in North America (Okosina 1989), and includes at least three other taxa in Eurasia (Niemela 1998). These taxa were initially identified as intersterility groups (ISGs) (Korhonen 1978) within the species H. annosum, but the current trend is to assign them the species rank based on molecular, morphological, and host-association traits. European ISGs have already been accepted as different species (Niemela 1998). Although yet to he defined as species by taxonomists, the North American Heterobasidion ISGs have a much wider genetic divergence and isolation than their European counterparts (Otrosina 1993), and are also ecologically specialized on different hosts (Otrosina 1989; Worrall 1983). In this paper we will use the terms "species" and "ISGs" interchangeably when referring to the two North American taxa of Heterobasidion.

  • Citation: Garbelotto, M.M.; Otrosina, William J.; Chapela, I.H.; Gonthier, P. 2001. Studies on the ecology and genetics of hybridization in Heterobasdion. In: Proceedings of the IUFRO Working Party, September 16-22, Quebec City, Canada, eds. Laflamme, G.; Bérubé, J.A.; Bussières, G., p. 238-244
  • Posted Date: April 1, 1980
  • Modified Date: August 22, 2006
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.