Wood Pitting—Gum Pocket—Gummy Pitting of Trifoliate Orange: Considerations About Their Etiology

N. Duran-Vila, L. Botella, C. Vernière
2002 International Organization of Citrus Virologists Conference Proceedings (1957-2010)  
The terms "gum pocket", "wood pitting" and "gummy pitting" have been used to describe a characteristic disorder of trifoliate orange. Affected trees show gum pockets, which develop only in the bark and wood of the trifoliate orange rootstock, but the etiology remains unclear. Viroid-infected Clementine trees grafted on trifoliate orange were monitored for the presence of symptoms that were identified in all the viroid-infected treatments as well as in some uninoculated controls. These
more » ... ls. These observations suggest that these symptoms may be of physiological or stress origin and that viroid infection may act simply by enhancing its development.
doi:10.5070/c57dc0k928 fatcat:cjxkailss5hhbf7o6kqhas7p5m