Behavior of Ilex paraguariensis St. Hilaire, 1822 to Meloidogyne incognitaand M-paranaensis and their influence on development of plantlets.

The influence of Meloidogyne incognita and M. paranaensis on the developmen t of mate (Ilex paraguariensis ST. Hill) plantlets was assessed in greenhou se and laboratory. The experimental design was randomized. Every plot of ea ch one of the 10 repetitions contained one mate plantlet, inoculated with 5 ,000 eggs of M. incognita traces 1, 2, 3 and 4) and M. paranaensis. After 1 20 days it was observed that mate was a reliable hostess to such nematodes and that they could finish their life cycle. Plant development was signific antly modified by M. incognita, races 1 and 2. Dry and green matter weight of shoots changed according to treatment. No changes were observed in fresh root weight. The number of eggs per root was similar for M. incognita, rac es I and 2, and higher for the other treatments. The reproduction factor wa s above 1 for all treatments, indicating mate plants susceptibility to them .