VIEW ARTICLE

Resistance

Host Studies and Reactions of Rice Cultivars to Meloidogyne graminicola. Choi- Pheng Yik, Former graduate assistant, Louisiana State University, Department of Plant Pathology, Louisiana State University, Baton Rouge, LA 70803; W. Birchfield, research plant pathologist, USDA, SEA, Department of Plant Pathology, Louisiana State University, Baton Rouge, LA 70803. Phytopathology 69:497-499. Accepted for publication 20 November 1978. Copyright 1979 The American Phytopathological Society. DOI: 10.1094/Phyto-69-497.

Meloidogyne graminicola readily reproduced on 21 of 26 cultivars tested. Based on root gall development, two cultivars showed resistance to the rice root-knot nematode, nine cultivars were mildly resistant, and 15 were susceptible. The rice root-knot nematode has a narrow host range among dicotyledonous plants. Ranunculus pusillus Poir is now reported as the second dicotyledonous host. The sedge, Cyperus compressus L., also is a new host.