Articles
INVESTIGATIONS ON THE RASPBERRY PERIDERM AND THE DEGRADATION OF ITS RESISTANCE PROPERTIES BY THE RASPBERRY CANE MIDGE RESSELIELLA THEOBALDI
Article number
112_32
Pages
229 – 238
Language
Abstract
On young raspberry canes the formation of periderm is delayed compared with their vegetative growth.
Mainly young suckers are only to a minor part protected by this tissue.
From cane midge larvae feeding sites several fungi could be isolated.
Leptosphaeria coniothyrium, the cause of cane blight, could only be found in a low percentage.
Cane midge larvae are able to cause minute perforations with their spines on the outermost periderm cell wall.
However, these injuries do not seem to be an important factor in the development of midge blight.
Obviously, the larvae also have the capability to degrade suberin, cellulose and hemicelluloses of the periderm cell walls.
Mainly the degradation of suberin seems to enable pathogenic fungi to invade the vascular tissue which can lead to a serious threat of the cane.
Mainly young suckers are only to a minor part protected by this tissue.
From cane midge larvae feeding sites several fungi could be isolated.
Leptosphaeria coniothyrium, the cause of cane blight, could only be found in a low percentage.
Cane midge larvae are able to cause minute perforations with their spines on the outermost periderm cell wall.
However, these injuries do not seem to be an important factor in the development of midge blight.
Obviously, the larvae also have the capability to degrade suberin, cellulose and hemicelluloses of the periderm cell walls.
Mainly the degradation of suberin seems to enable pathogenic fungi to invade the vascular tissue which can lead to a serious threat of the cane.
Authors
E. Seemüller, J. Grünwald
Keywords
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