@article {Forneck371, author = {Astrid Forneck and Kevin S. Powell and M. Andrew Walker}, title = {Scientific Opinion: Improving the Definition of Grape Phylloxera Biotypes and Standardizing Biotype Screening Protocols}, volume = {67}, number = {4}, pages = {371--376}, year = {2016}, doi = {10.5344/ajev.2016.15106}, publisher = {American Journal of Enology and Viticulture}, 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 biotypes, particularly with regard to their performance on various hosts, but the results are difficult to compare because there is neither a homogenous nomenclature nor a standardized protocol for phenotyping. To improve communication within the scientific community, we offer a simplified 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.}, issn = {0002-9254}, URL = {https://www.ajevonline.org/content/67/4/371}, eprint = {https://www.ajevonline.org/content/67/4/371.full.pdf}, journal = {American Journal of Enology and Viticulture} }