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Home → Publications → American Chestnut Proceedings → 1978 → Frequency of Vegetative Compatibility Types of Endothia parasitica in Two Areas of West Virginia

Frequency of Vegetative Compatibility Types of Endothia parasitica in Two Areas of West Virginia

The vegetative compatibility types of 202 virulent isolates of Endothia parasitica were determined. Isolates were obtained from cankers on American chestnut stems found in two clear-cutare as within West Virginia. Eighty-nine percent (179) of the isolates were classified in 14 vegetative compatibility groups. Twenty-three isolates (11 percent) were vegetatively incompatible with all others or did not give a consistent reaction when paired on agar. Study areas with the highest incidence of infection contained the greatest number of vegetative compatibility types while those with the least infection contained the fewest. Only 25 percent of the trees with multiple cankers were infected by isolates of the same vegetative compatibility type.


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Author(s): William L. MacDonald, Mark L. Double

Publication: American Chestnut Proceedings - 1978