To evaluate the host response of different stone fruits rootstocks, Prunus sp. against the Meloidogyne species found in the Central Valley of Chile.

1.- To establish a rear of Meloidogyne populations collected in different locations of the Central Valley of Chile. 2.- To identify the Meloidogyne species found in the Central Valley of Chile through morphological and molecular characterization . 3.- To determine the comparative virulence among Meloidogyne species found in the Central Valley of Chile. 4.- To determine the host responses of nine Prunus sp. rootstocks genotypes to Meloidogyne spp.