Fecha/hora: 16/06/2024 11:06:09

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 27/01/2020
Fecha de la última actualización: | 23/03/2020
Autoria: | BELLÉ, C.; RAMOS, R.F.; BALARDIN, R.R.; NORA, D.D.; KASPARY, T. E.
Afiliación: | CRISTIANO BELLÉ, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Santa Maria, Rio Grande do Sul, Brazil; RODRIGO FERRAZ RAMOS, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Santa Maria, Rio Grande do Sul, Brazil; RICARDO RUBIN BALARDIN, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Santa Maria, Rio Grande do Sul, Brazil; DAIANE DALLA NORA; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Host weed species range of Meloidogyne ethiopica whitehead (Tylenchida: Meloidogynidae) found in Brazil.
Año de publicación: | 2020
Fuente/Imprenta: | European Journal of Plant Pathology, 1 March 2020, Volume 156, Issue 3, Pages 979-985. https://doi.org/10.1007/s10658-019-01900-1
ISSN: | 0929-1873
DOI: | 10.1007/s10658-019-01900-1
Idioma: | Inglés
Notas: | Article history: Accepted 18 November 2019 / First Online 25 November 2019.

Contenido:

ABSTRACT.
Meloidogyne ethiopica is considered to be one of the most economically important emerging nematode species, reported to cause crop losses to several hosts worldwide. The significance of this species is due to its high virulence and degree of polyphagia, in addition to persisting on weed hosts within agricultural fields. This study evaluated the host status of 36 different weed species, confirming the polyphagia habit of M. ethiopica and indicating which plant species may be alternative hosts for this plant nematode. Weed species were inoculated with 5000 eggs and second-stage juveniles (J2) of M. ethiopica, with gall index (GI), nematode/g root (Nem/g), and reproduction factor (RF) value determined following 60 days post inoculation. The data obtained indicate that many weed species may be excellent hosts for M. ethiopica. Plants deemed susceptible (RF &#8805; 1.0) were: Acanthospermum australe, Amaranthus deflexus, A. hybridus, A. spinosus, A. viridis, Bidens pilosa, B. subalternans, Cardiospermum halicacabum, Commelina benghalensis, Cynodon dactylon, Euphorbia heterophylla, Galinsoga parviflora, Ipomoea grandifolia, I. nil, I. purpurea, Leonurus sibiricus, Nicandra physaloides, Oxalis corniculata, Portulaca oleracea, Raphanus raphanistrum, Sida rhombifolia, Solanum americanum, S. pseudocapsicum, S. sisymbriifolium, Sonchus oleraceus and Talinum paniculatum, representing 72.2% of the species assessed. The species Conyza bonariensis, Cyperus rotundus, Digitaria horizontalis, D. insularis, Echinochloa colonum, Eleusine indica, Lolium multiflorum, Polygonum hydropiperoides, Rhynchelytrum repens and Senecio brasiliensis were resistant to M. ethiopica (RF < 1.0). Based on the new host records presented, it is vital that control of weed species within agricultural fields are considered as part of effective management of M. ethiopica. 
© 2019, Koninklijke Nederlandse Planteziektenkundige Vereniging.

Palabras-Clave: | Host status; Invasive plants; Nematode reproduction; Root-knot nematodes; Susceptibility.
Categoría del tema: | A50 Investigación agraria
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (102114-1) - PXI - AP - DD - PP/Eur.Jr.Plant Pathology/2020 -  -  - DIS