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Titolo:
Nematophagous Verticillium spp. in soils infested with Meloidogyne spp. inCuba: isolation and screening
Autore:
Hidalgo-Diaz, L; Bourne, JM; Kerry, BR; Rodriguez, MG;
Indirizzi:
CENSA, La Habana, Cuba CENSA La Habana CubaCENSA, La Habana, Cuba
Titolo Testata:
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
fascicolo: 4, volume: 46, anno: 2000,
pagine: 277 - 284
SICI:
0967-0874(200010/12)46:4<277:NVSISI>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREAL CYST-NEMATODE; CHLAMYDOSPORIUM GODDARD; HETERODERA-AVENAE; FUNGAL PARASITES; STRAINS; GROWTH; EGGS;
Keywords:
Verticillium; Meloidoygne; biological control; Cuba; root-knot nematode;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Bourne, JM IACR Rothamsted, Dept Entomol & Nematol, Harpenden AL5 2JQ, Herts, England IACR Rothamsted Harpenden Herts England AL5 2JQ Herts, England
Citazione:
L. Hidalgo-Diaz et al., "Nematophagous Verticillium spp. in soils infested with Meloidogyne spp. inCuba: isolation and screening", INT J PEST, 46(4), 2000, pp. 277-284

Abstract

Root-knot nematodes cause substantial economic loss of yield in coffee plantations and vegetable crops in Cuba. At present, methods to control the nematodes are ineffective or inappropriate and alternatives are being sought. The nematophagous fungus Verticillium chlamydosporium (Goddard) was isolated from soils collected from coffee plantations and infected root-knot nematode eggs from roots of tomato plants grown in these soils. A total of 83 isolates were collected and identified morphologically as V. chlamydosporiumvar. chlamydosporium, V. chlamydosporium var. catenulatum, V. psalliotae, V. suchlasporium and an isolate of V. chlamydosporium var. chlamydosporium with unusually large dictyochlamydospores. From these, 24 that represented a range of origins were selected and screened for their ability to parasitize eggs of root-knot nematodes, colonize the rhizosphere of barley roots and produce chlamydospores. None of the isolates grew at temperatures below 15 degreesC and V. suchlasporium grew at a faster rate at lower temperaturesthan the other isolates. These were also screened in the glasshouse and V.chlamydosporium var. catenulatum caused the greatest reduction in nematodepopulations. One isolate of each subspecies of V. chlamydosporium was tested with the standard, Rothamsted isolate 10, on a range of host plants. Thegreatest reduction in numbers of nematodes occurred on tomato plants (cv. Pixie). The Rothamsted isolate 10 reduced numbers of nematodes to a greaterextent than the other isolates, and therefore has the greatest potential as a biological control agent of root-knot nematodes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 13:58:58