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Infection experiments with Gremmeniella abietina on seedlings of Norway spruce and Scots pine
Author(s) -
Barklund Pia,
Unestam T.
Publication year - 1988
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1988.tb00230.x
Subject(s) - scots pine , picea abies , biology , shoot , botany , pinus <genus> , epiphyte , conidium , mycelium , endophyte , woody plant , horticulture
Conidia of Gremmeniella abietina infected and caused disease symptoms in annual shoots of both Scots pine ( Pinus sylvestris ) and Norway spruce ( Picea abies ) seedlings. In Norway spruce shoots the infection remained largely latent, with only a few seedlings showing symptoms. Mycelial growth inside the shoots was faster in Scots pine than in Norway spruce and was favoured by low temperature in both hosts. The shoots of Norway spruce seedlings had higher endophyte populations than those of Scots pine, and the populations were decreased by low temperatures. Reductions in the normal epiphytic or endophytic flora by acid mist treatments seemed to favour the development of G. abietina .