• Titel
    Association of seed-borne Fusarium species on Pinus ponderosa with germination and seedling viability in Argentina
  • Verfasser
    M.I. Salerno (*)
    G.A. Lori (*)
  • Erscheinungsort
    Berlin
  • Verlag
    Blackwell
  • Erscheinungsjahr
    2007
  • Illustrationen
    5 Tab., 24 Lit. Ang.
  • Material
    Artikel aus einer ZeitschriftUnselbständiges Werk
  • Standardsignatur
    8320
  • Datensatznummer
    200142723
  • Quelle
    Forest Pathology 2007, 37(4); S. 263–271
  • Abstract
    Pinus ponderosa seedlots from eight seed orchards in Western Patagonia, Argentina, were evaluated for the presence of Fusarium species, and isolates obtained were subjected to pathogenicity tests. The following species were isolated: Fusarium oxysporum, Fusarium equiseti, Fusarium verticillioides, Fusarium incarnatum, Fusarium acuminatum, Fusarium graminearum and Fusarium proliferatum. With the exception of F. proliferatum and F. graminearum all Fusarium species were recovered from P. ponderosa seedlings with symptoms of damping-off. Five Fusarium species were re-isolated from necrotic roots of seedlings showing chlorosis (F. oxysporum, F. equiseti, F. incarnatum, F. acuminatum and F. verticillioides). High damping-off losses occurred in Fusarium-contaminated seed of P. ponderosa and low disease incidence occurred on less contaminated seed. The role of seed-borne inoculum in disease spread within forest nurseries is discussed.
  • Schlagwörter
    Pinus ponderosa, Samenplantage, Samenschädling, Fusarium spp., Pathogenitätstest, Patagonien, Argentinien
  • Klassifikation
    443.2, 416.2, 174.7, [82]