Resumo

DEL VALLE, E.E; GUZMAN, A.M; BELAVI, A.M  e  SORESSI, M. Comportamiento de cuatro cultivares de Cucurbita maxima cv. zapallito frente al parasitismo del nematodo de las agallas Meloidogyne incognita. FAVE. Secc. Cienc. agrar. [online]. 2013, vol.12, n.2, pp.29-34. ISSN 1666-7719.

The root-knot nematode, Meloidogyne incognita, causes yield losses in many horticultural crops in the coastal área of Santa Fe province. The aim of this research was to determine the reaction of four commercial cultivars of summer squash (Cucurbita maxima cv. zapallito) when parasitized by M. incognita. The experiments were conducted in pots under greenhouse conditions and Nacional, Premier, Sais superselection and Máximo cultivars were evaluated. The treatments consisted of plants of each cultivar inoculated with 100 second-stage juveniles of M. incognita and its corresponding control. 45 days after inoculation the number of galls, Gall Index, number of egg masses, Eggs Mass Index, number of eggs and reproduction factor were determined. The four cultivars studied showed susceptibility to M. incognita.

Palavras-chave : Root-knot nematodes; Summer squash; Meloidogyne incognita.