Hatching effect of root exudates from Solanum Sisymbriifolium on Meloidogyne spp.

Abstract

Root-knot nematodes (RKN), Meloidogyne spp., are widespread and economically important plant-parasitic nematodes, causing significant reduction on quantity and quality of agricultural production. Its control is difficult and many methods are inefficient. Some plants release natural phytochemicals that have been identified and proved to have nematicides properties. The root exudates may act as stimulants or inhibitors of second-stage juveniles (J2) hatching. The goal of this research was to evaluate the hatching effect of root exudates from Solanum sisiymbriifolium (cvs Sharp, Pion, Sis 4004 e Domino) on five Meloidogyne isolates (M. arenaria, M. chitwoodi, M. hapla, M. hispanica and M. javanica) and to contribute for the development of an alternative strategy to the use of the nematicides. The root exudates, obtained by successive soil leaching, were tested, with daily counts, for a period of 15 days. The exsudate from tomato (S. lycopersicum cv. Easypeel) and distilled water were used as controls.