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Indications of Yearly Variation of Acremonium Coenuphialum in Seed from a Permanent Tall Fescue Sward 1
Author(s) -
Pedersen J. F.,
Williams M. J.,
Clark E. M.,
Backman P. A.
Publication year - 1984
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1984.0011183x002400020038x
Subject(s) - acremonium , biology , festuca arundinacea , endophyte , agronomy , poaceae , fungi imperfecti , botany , horticulture
The fungal endophyte Acremonium coenophialum of tall fescue ( Festuca arundinacae Schreb.) is not thought to spread by means other than through infected seed. The objective of this paper is to report a case in which an apparent increase in percent infection of a permanent tall fescue sward occurred. The breeder seed field of ‘AU Triumph’ tall fescue, originally thought to be endophyte free, produced essentially clean seed for 4 years (1978–1981). However, breeder seed were 31% infected in 1982. The breeder seed field was found to have been established from seed 59% infected, producing plants that were 57% infected in 1982. Acremonium levels may have increased by some means of inoculum spread or yearly environmental differences may have influenced the level of infected seed produced.