Download (PDF 345 KB): https://research.fs.usda.gov/download/treesearch/43047.pdf
Abstract
Some of the factors that influence canker development in American sycamores inoculated with
Botryodiplodia theobromae conidia were determined. A combination of
B. theobromae culture filtrates and conidia resulted in 100% canker production when introduced into stem wounds; however, a combination of
Cephalosporium diospyri culture filtrates and
B. theobromae conidia resulted in no canker production in healthy sycamores. Inoculations with conidia without fungous filtrates resulted in canker development at wounds 0.5 cm below pruned twig terminals but not at wounds on branches with intact terminals. Conidial inocula also induced canker development in Cephalosporium-wilted and water-stressed sycamores. Cankers resulting from conidial inoculations are favored by stress in American sycamores.
Citation
Lewis, R., Jr. 1978. Influence of Infection Court, Host Vigor, and Culture Filtrates on Canker Production by Botryodiplodia Theobromae Conidia in Sycamore. Plant Disease Reporter 62(11):934-937.
