The Unknown Hatching Agent for the Potato Root-Eelworm

Abstract

THE UNKNOWN HATCHING AGENT FOR THE POTATO ROOT-EELWORM (Some Purification Aspects) BY G. J. JANZEN AND F. VAN DER TUIN (Experiment Station for Potato Processing, Groningen) INTRODUCTION It is well known that potato root-diffusate shows activity in hatching potato root-eelworm. A number of years were spent in purifying these diffusates, with the ultimate aim of isolating the hatching factor. Although some progress was made in purifying the crude diffusate, methods have not been satisfactory, owing to the many impurities to be eliminated from the crude preparation. Later, a simultaneous set of experiments were started from a different angle. MASSEY and