The International Potato Center (CIP) recently updated its standard operational protocol (SOP056) for the in vitro propagation of potato and sweetpotato, prepared by R. Vollmer and co-authors. It describes the in vitro multiplication of potato and sweetpotato germplasm for international and national germplasm distribution, as well as in vitro conservation, phytosanitary and cryopreservation activities. Using these procedures, the plants are grown under sterile and controlled conditions.

The 13-page document is available in English and Spanish at [cgspace.cgiar.org]