Varietal Susceptibility of some Tomato and Pepper Cultivars Against Root – Knot Nematode, Meloidogyne javanica حساسية بعض أصناف الطماطم و الفلفل لنيماتودا تعقد Meloidogyne javanica

Four cultivars of tomato viz. Super strain B, Vacolta 38, Ko186 and Login and pepper viz.California wonder, Boulnder A, Marconi and Maor were screened to root –knot nematode Meloidogyne javanica at inoculum level (1000 J2) in pots experiment under field condition at the Experimental Farm, Faculty of Agriculture, Shebin El- Kom. Obtained results showed highly significant differences among tomato and pepper cultivars under study. Sensitive tomato cultivar Super strain B was significantly higher than those of other cultivars over all mean of M. javanica J2 population density, egg masses and number of root galls (2391: 30.7 and 37.5) respectively. Contrariwise occurred with the resistant cultivar Vacolta38 (1576; 13.4 and 6.7) which attained the least population density of M. javanica J2, egg masses and number of root galls, respectively. Conspicuous effectiveness is very emphasizes for Vacolta38 in improvement plant parameters such as plant high; shoot weight and root weight showed results (56.8; 69.7 and 17.6), respectively. Pepper susceptible cv. Moar seemed to be the most favorable and more sensitive to M. javanica J2 infection, egg masses and number of root galls (2436; 71.4 and 80.2), respectively, while resistant cultivar Boulnder A against M. javanica population; egg masses and number of root galls supported the least (1698; 11.7 and 8.0), respectively. The plant parameters also improved over the rest varieties. It could be recommendable hence forward to introduce dual tomato and pepper resistant cultivars Vacolta38 and Boulnder A against M. javanica infection in breeding and integrated nematode management programs.