Relationship of leaf curl virus and root-knot nematodes incidence in some tomato hybrids

Resumo

In the field multiple infection by several kinds of pathogens may contribute to yield losses in vegetable crops. Investigations of combined infections have generally lagged behind because of some inherent difficulties in such studies. Interrelationships between viruses and nematodes have been restricted mainly to the transmission of viruses. Root-knot nematodes have not been reported as virus vectors but recently it has been shown that they may cause greater damage to plants when in combination with some viruses (Ryder and Crittenden, 1962; Swaroop and Goswami, 1969; Paul Khurana et al., 1970). Also, Bustillo (1972) has shown that cowpea chlorotic mottle virus concentration was increased 15-73% in soybean plants infested with Rotylenchulus reniformis.