Host-parasite relationship od Meloidogyne incognita (Kofoid et White) Chitw. on rice

Abstract

In a previous paper, the writers recognized occasional nematode infection in some scattered rice fields, and identified Meloidogyne incognita (Kofoid et White) Chitw. and. M. javanica (Treub) Chitw. as the incitants of the disease. The former was found to be generally distributed in all surveyed localities, while the latter was found only within Kafr El-Sheikh Governorate. The symptoms and galls produced by each species were similar and growth of infected plants was considerably reduced, as determined by fresh and dry weight, number and vigour of roots and tillers. This paper reports investigations on the life cycle and the effect of the parasitizing larvae of M. incognita on the invaded tissues of rice roots.