A total of 30 breeding lines of tomato were evaluated against Meloidogyne incognita under greenhouse conditions. The majority of the materials have either resistance or tolerance to bacterial wilt caused by Pseudomonas solanacearum. All materials tested were susceptible to the nematode in terms of root galling and reproduction. Mean soil temperature of above 28 C during the evaluation might have contributed to the difficulty in detecting nematode resistance. Nevertheless, abundant root systems and small galls in the genotypes 6A-16, 6A-19, and 6A-21 were used as criteria for selecting breeding lines suspected of having field tolerance to the nematode. These three lines should be tested under field conditions in bacteria and nematode-infested soil. Future prospects to incorporate resistance against the nematode are discussed.
