Screening of three sweet potato (Ipomoea batatas L.) cultivars for resistance to different virulence groups of root-knot nematodes (Meloidogyne spp.) under controlled conditions

1. Piedra-Buena, A.
2. López-Pérez, J.A.
3. Díez-Rojo, M.Á.
4. Robertson, L.
5. Castro-Lizazo, I.
6. Bello, A.