The use of polyethylene bags in the culture and study of Striga spp. and other organisms on crop roots

SUMMARY A technique is described by which root parasites such as Striga and Orobanche species may be grown on the roots of suitable host plants growing on a layer of glass‐fibre filter paper in a flattened, standard polyethylene bag. The single‐bag units are compact, inexpensive, simple to set up and allow repeated observation without damage. Some other potential uses of the technique are described.