Parasitism of Eggs of Heterodera glycines and Meloidogyne arenaria by Fungi Isolated from Cysts of H. glycines

The degree of parasitism of 14 fungal species isolated from cysts and eggs of Heterodera glycines Ichinohe against eggs of H. glycines, and of Meloidogyne arenaria (Neal) Chitwood was tested in vitro. The fungi were: Chaetomium indicum Corda, Codinaea heteroderae Morgan-Jones, Fusarium oxysporum Schlecht, F. solani (Mart.) Sacc., Gliocladium catenulatum Gilman & Abbot, G. roseum Bain, Neocosmospora vasinfecta E.F. Smith, Phoma macrostoma Mont., P. multirostrata (Mathur, Menon & Thirum) Dorenb. & Boerema, Stagonospora heteroderae Morgan-Jones, Verticillium lamellicola (R.E.V. Smith) Gams, V leptobactrum Gams, and Thielavia terricola (Gilman & Abbott) Emmons. The fungi were cultured in a chitin-mineral salts agar medium and nematode eggs were added to actively growing cultures to assess the ability of the fungal species to parasitize them. The cultures that showed the highest percent of parasitized eggs were those with V. lamellicola, V. leptobactrum, P macrostoma and P. multirostrata.