Evaluation of Chinese Chestnut Cultivars for Resistance to Cryphonectria parasitica . Hongwen Huang, Department of Horticulture, Auburn University, Auburn, AL 36849 . William A. Carey, Joseph D. Norton. Plant Dis. 80:45-47. Accepted for publication 2 October 1995. Copyright 1996 The American Phytopathological Society. DOI: 10.1094/PD-80-0045.

Seedlings of 13 Chinese chestnut cultivars were inoculated with and evaluated for resistance to Cryphonectria parasitica. Canker widths differed among the cultivars. Cankers increased for 1 week after inoculation but gradually constricted through callus formation; cankers on American chestnut controls expanded at a rate of 0.6 ± 0.3 mm per day until stems were girdled. Isolates of C. parasitica caused differential responses in Chinese and American chestnut

Keyword(s): Castanea dentata, C. mollissima, chestnut blight