Abstract
Grape phylloxera biotypes are defined by their specific performance on, or preference for, a particular host (e.g. feeding on a particular rootstock). Numerous studies have phenotyped phylloxera, particularly in regard to their performance on various hosts but the results are difficult to compare because of the lack of a homogenous nomenclature and a standardized protocol for phenotyping. In an effort to improve communication within the scientific community, we offer a simplification of the phylloxera biotype classification to allow clear data interpretation and effective communication. We also introduce the standard techniques employed for phylloxera phenotyping and discuss their advantages and disadvantages.
- ©2016 by the American Society for Enology and Viticulture