TY - JOUR AU1 - Schindler, A.F. AB - PARASITISM AND PATHOGENICITY OF XIPHINEMA DIVERSICAUDATUM, AN ECTOPARASITIC NEMATODE 1 ), 2 ) BY A. F. SCHINDLER (U.S.D.A. Agric. Res. Serv., Hort. Crops Res. Br., Beltsville, Maryland) From a survey of commercial rose-growing greenhouses (SCHIND- LER, 1956), it was ascertained that 2 genera of nematodes, Xiphinema (dagger nematodes) and Pratylenchus (meadow nematodes) (BUHRER, I954)? were the most wide-spread and numerous of the suspected plant parasitic forms consistently found to be associated with roses ex- hibiting poor growth and chlorosis. Because of the frequency with which Xiphinema diversicaudatuan (Micoletzky, 1927) Thorne, 1939 was found associated with reduced vigor, chlorosis, and galled roots on roses, and because parasitism or pathogenicity of Xiphinema spp. was unproven, it was decided to con- duct greenhouse experiments with this nematode in an attempt to discover its parasitic relationships and its pathologic effects. Although Xiphinema has often been mentioned as a possible plant parasite since COBB (1914) first suggested this, no experimental proof has been given. STEINER (1949, 1952) and CHRISTIE (1952 b) considered Xiphinema spp. as probable plant parasites while the latter considered X. americanum Cobb, 1913 one of the four nematode pests of major importance in the southeastern United States. Both workers considered TI - Parasitism and Pathogenicity of Xiphinema Diversicaudatum, an Ectoparasitic Nematode JF - Nematologica DO - 10.1163/187529257X00626 DA - 1957-01-01 UR - https://www.deepdyve.com/lp/brill/parasitism-and-pathogenicity-of-xiphinema-diversicaudatum-an-1Q4S6iCH6A SP - 25 EP - 31 VL - 2 IS - 1 DP - DeepDyve ER -