Nematicidal Activity of Leaf Extracts from Lantana camara L. against Meloidogyne incognita (Kofoid and White) Chitwood and its use to Manage Roots Infection of Solanum melongena L

Ano: 2010 | Volume: 53 | Número: 3

Autores: Faheem Ahmad, Mohmad Azhar Rather, Mansoor Ahmad Siddiqui

Palavras-chave: eggplant, root-knot nematode, nematostatic activity

Resumo Inglês:

Various concentrations of aqueous leaf extract of Lantana camara were assessed in vitro conditions against second
stage juveniles (J2) of Meloidogyne incognita. The standard concentration ‘S’ of leaf extract was found to be highly
nematostatic, where nematodes were completely paralyzed after 12 h and after 48 h of exposure, 96% of juveniles
were killed at same concentration. However, the mortality of juveniles was 75% in S/2 dilution at 48 h. The degree
of effectiveness and dilutions of extract were directly proportional. The percentage of paralyzed juveniles was
decreased, when J2 transferred in distilled water after 48 h incubation in standard aqueous leaf extract. Addition of
freeze-dried aqueous extract to sterile sandy substrate at S/2 dilution significantly decreased the root-knot infection
to susceptible eggplants whereas second stage juveniles (J2) that penetrated roots of eggplant were able to complete
development in sterile sandy substrate without treatment of freeze-dried aqueous extract.