Reação de cultivares de soja a uma população de Meloidogyne javanica

Abstract

In the period of 2001/2002 a population of Meloidogyne javanica was found infecting a soybean cultivar 'CD 208 considered resistant in a field located in the County of Nuporanga, state of Sao Paulo (SP), Brazil. Due to this fact, it was evaluated the resistance of some of the main cultivars used in areas of the Cooperativa dos Agricultores, in Orlandia (CAROL), SP. The study was carried out in greenhouse conditions of the Departamento de Fitossanidade (Plant Protection) da UNESP/FCAV, Campus of Jaboticabal, SP, in clay pots of 5 liters. Five individual plants of the cultivars BRS 133, BRS 183, BRSMG 68, BRSMG Garantia, CD 201, MG/BR-46 Conquista, EMBRAPA 48, IAC 22, M-SOY 7901, M-SOY 8001 and M-SOY 8400 were inoculated with 3,000 eggs and second estage juveniles of the nematode, seven days after seed germination and the evaluation was carried out 57 days after inoculation. Galls, egg masses and the reproduction factor were determined. The results pointed out that the cultivar BRSMG Garantia was tolerant to the nematode population and all others were susceptibles.