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Observations of apothecia of Tapesia yallundae and the cultural phenotypes of their progeny
Author(s) -
KING A. C.
Publication year - 1991
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1991.tb02392.x
Subject(s) - ascocarp , biology , inoculation , botany , spore , agronomy , horticulture , taxonomy (biology)
Apothecia of Tapesia yallundae, the perfect state of Pseudocercosporella herpotrichoides, were found in March 1989 on wheat and barley stubble at nine of 37 naturally infested sites and also at one inoculated site in Germany. Apothecia were found on about 1% of stems collected from the naturally infested sites and 5% of stems from the inoculated site, and were first found in the second week of March, coinciding with the onset of an early spring. Apothecia were not found on either green plants or second‐year stubble. In total, 143 single‐spore isolates were obtained from the apothecia and described according to a range of morphological characteristics. The majority were ascribed to P. herpotrichoides var. herpotrichoides. This is the first isolation of this variety from T. yallundae apothecia in Germany. Even single‐conidial isolates from one apothecium showed much variation, some being like var. herpotrichoides, some like var. acuformis and some intermediate.