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In vitro assessment of pathogenicity and culture filtrates of fungi against Heterodera schachtii (Article in English) | ||
| آفات و بیماری های گیاهی | ||
| Article 11, Volume 77, No. 2 - Serial Number 89, March 2010, Pages 15-26 PDF (127.75 K) | ||
| Document Type: Pest Management | ||
| Authors | ||
| E. AYATOLLAHI; S. FATEMY* | ||
| Abstract | ||
| The pathogenicity of four isolates of three fungal species against females and cysts of Heterodera schachtii on water agar and the effects of fungal filtrates on motility of second-stage juveniles were examined. Rates of egg colonization by the fungi were measured after 3 weeks at 20 °C on 0.8% water agar. Fungi penetrated both females and cysts of which 60, 36, 21 and 17% of the eggs were infected by the two isolates of Paecilomyces lilacinus (PL 8.1 & PL 25.4), Cylindrocarpon destructans var. crassum and Chaetomium murorum, respectively. Filtrates of the fungi reduced mobility of the nematode J2 after 24 and 48 h incubation periods. Isolate 8.1 of P. lilacinus paralyzed 100% of the J2 after both 24 and 48 h incubation periods. After 48 h of incubation the extracts of isolate 25.4 of P. lilacinus, C. destructans var. crassum and C. murorum paralyzed 25, 22 and 9% of the J2, respectively. | ||
| Keywords | ||
| Chaetomium murorum; Cylindrocarpon destructans var. crassum; Paecilomyces lilacinus; fungal filtrate; juvenile mobility; sugar beet cyst nematode | ||
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