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Articles

DECREASE IN VIABILITY OF COLLETOTRICHUM ACUTATUM IN CORMS OF ANEMONE CORONARIA DURING STORAGE

Article number
266_67
Pages
505 – 508
Language
Abstract
Colletotrichum acutatum causes leaf curl and leaf necrosis in Anemone coronaria. The disease may be spread with contaminated corms.
We investigated whether C. acutatum retaines its viability during storage of contaminated corms.

The percentages of naturally contaminated corms producing plants with symptoms of necrosis decreased with increased duration of corm storage at 17°C or 22°C both at 45% RH. The percentages of healthy corms that produced plants with symptoms of necrosis after corm inoculation with viable C. acutatum did not decrease during storage.
This may indicate that plant processes are not responsible for the decrease of the percentage of plants with symptoms of necrosis from contaminated stock.

In the beginning of storage, isolation of C. acutatum from corms of a contaminated stock showed a higher percentage of corm contamination as compared with infection percentages of plants grown from the contaminated corms.
The decline of successful isolation started earlier during the storage period and was more pronounced than the decline of plant infection.

In conclusion, viability of C. acutatum in corms of Anemone coronaria decreased during storage.

Publication
Authors
A.W. Doornik, E.M.C. Booden
Keywords
Full text
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