a guide to the recognition and understanding of ramularia and other ...
a guide to the recognition and understanding of ramularia and other ...
a guide to the recognition and understanding of ramularia and other ...
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28<br />
LIFECYCLE<br />
Ramularia collo cygni spore on distinctive curved conidiophore<br />
Asteromella production<br />
Ramularia collo-cygni produces a second type <strong>of</strong> spore known as<br />
asteromella. They develop late in <strong>the</strong> season on straw. The importance<br />
<strong>of</strong> this second spore body on <strong>the</strong> disease epidemic is not fully<br />
unders<strong>to</strong>od, but <strong>the</strong>y are a potential source <strong>of</strong> secondary spores in<br />
stubble which can infect <strong>the</strong> following barley crop. They are also a<br />
potential method for <strong>the</strong> pathogen <strong>to</strong> reproduce sexually leading <strong>to</strong> <strong>the</strong><br />
formation <strong>of</strong> new races which may adapt <strong>to</strong> changes in climate <strong>and</strong><br />
fungicide usage.
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