<abstract xmlns="http://www.w3.org/1999/xhtml"><p><italic>Phomopsis vaccinii</italic> cause a serious disease of blueberry, cranberry and other <italic>Vaccinium</italic> crops in the North America and Europe as well. Over 1000 species names are described by <italic>Phomopsis</italic> spp., but their biology and life style are mostly unknown. Identification of <italic>P. vaccinii</italic> by methods of classical phytopathology is difficult and complicate, because many species are morphologically similar to <italic>P. vaccinii</italic>, and <italic>P. vaccinii</italic> itself has diverse patterns of colony morphology. For this investigation <italic>P. vaccinii</italic> isolates were obtained from five cranberry plantations in different locations of Latvia (Babite, Alsunga, Rucava, Ape and Pargauja municipality) from berries affected by viscid rot at harvest and storage in 2010. Altogether 44 <italic>P. vaccinii</italic> isolates were cultivated on potato dextrose agar for description of colony morphology. In order to find some relationships between samples, the isolates were arranged in different groups on the basis of mycelium color and structure (zoning), reverse pigmentation, pycnidium formation time, size, location, number and size of conidia. During this study the colonies of <italic>P. vaccinii</italic> from cranberry in Latvia showed different morphological features in culture and no relationships between growing regions and groups of isolates were found. <italic>P. vaccinii</italic> is easy to confuse with other <italic>Phomopsis</italic> species if only classical phytopathological methods are used.</p></abstract>

Phomopsis vaccinii cause a serious disease of blueberry, cranberry and other Vaccinium crops in the North America and Europe as well. Over 1000 species names are described by Phomopsis spp., but their biology and life style are mostly unknown. Identification of P. vaccinii by methods of classical phytopathology is difficult and complicate, because many species are morphologically similar to P. vaccinii, and P. vaccinii itself has diverse patterns of colony morphology. For this investigation P. vaccinii isolates were obtained from five cranberry plantations in different locations of Latvia (Babite, Alsunga, Rucava, Ape and Pargauja municipality) from berries affected by viscid rot at harvest and storage in 2010. Altogether 44 P. vaccinii isolates were cultivated on potato dextrose agar for description of colony morphology. In order to find some relationships between samples, the isolates were arranged in different groups on the basis of mycelium color and structure (zoning), reverse pigmentation, pycnidium formation time, size, location, number and size of conidia. During this study the colonies of P. vaccinii from cranberry in Latvia showed different morphological features in culture and no relationships between growing regions and groups of isolates were found. P. vaccinii is easy to confuse with other Phomopsis species if only classical phytopathological methods are used.

Morphological Diversity of <italic>Phomopsis vaccinii</italic> Isolates from Cranberry (<italic>Vaccinium macrocarpon</italic> Ait.) in Latvia

Latvia University of Agriculture, Liela str.2, Jelgava, LV-3001, Latvia

Latvian Plant Protection Research centre, Struktoru str. 14a, Riga, Lv-1039, Latvia

Rural Sustainability Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Morphological Diversity of  Isolates from Cranberry ( Ait.) in Latvia

Phomopsis vaccinii cause a serious disease of blueberry, cranberry and other Vaccinium crops in the North America and Europe as well. Over 1000 species names...

Morphological Diversity of Phomopsis vaccinii Isolates from Cranberry (Vaccinium macrocarpon Ait.) in Latvia

Published Online: Aug 06, 2015

Page range: 8 - 18

DOI: https://doi.org/10.1515/plua-2015-0002

Keywords
colony morphology, mycelium, pycnidia, conidia

© Liga Vilka et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Morphological Diversity of Phomopsis vaccinii Isolates from Cranberry (Vaccinium macrocarpon Ait.) in Latvia

Published Online: Aug 06, 2015

Page range: 8 - 18

DOI: https://doi.org/10.1515/plua-2015-0002

Keywordscolony morphology, mycelium, pycnidia, conidia

© Liga Vilka et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
colony morphology, mycelium, pycnidia, conidia