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Resistance of Brassicaceae plants to root-knot nematode (Meloidogyne spp.) in northern Australia

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Pattison, A. B., Versteeg, C., Akiew, S. and Kirkegaard, J. (2006) Resistance of Brassicaceae plants to root-knot nematode (Meloidogyne spp.) in northern Australia. International Journal of Pest Management, 52 (1). pp. 53-62.

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Article Link: http://dx.doi.org/10.1080/09670870500424375


Brassicaceae plants have the potential as part of an integrated approach to replace fumigant nematicides, providing the biofumigation response following their incorporation is not offset by reproduction of plant-parasitic nematodes on their roots. Forty-three Brassicaceae cultivars were screened in a pot trial for their ability to reduce reproduction of three root-knot nematode isolates from north Queensland, Australia: M. arenaria (NQ1), M. javanica (NQ2) and M. arenaria race 2 (NQ5/7). No cultivar was found to consistently reduce nematode reproduction relative to forage sorghum, the current industry standard, although a commercial fodder radish (Raphanus sativus) and a white mustard (Sinapis alba) line were consistently as resistant to the formation of galls as forage sorghum. A second pot trial screened five commercially available Brassicaceae cultivars, selected for their biofumigation potential, for resistance to two nematode species, M. javanica (NQ2) and M. arenaria (NQ5/7). The fodder radish cv. Weedcheck, was found to be as resistant as forage sorghum to nematode reproduction. A multivariate cluster analysis using the resistance measurements, gall index, nematode number per g of root and multiplication for two nematode species (NQ2 and NQ5/7) confirmed the similarity in resistance between the radish cultivar and forage sorghum. A field trial confirmed the resistance of the fodder radish cv. Weedcheck, with a similar reduction in the number of Meloidogyne spp. juveniles recovered from the roots 8 weeks after planting. The use of fodder radish cultivars as biofumigation crops to manage root-knot nematodes in tropical vegetable production systems deserves further investigation.

Item Type:Article
Business groups:Horticulture and Forestry Science
Additional Information:© Taylor & Francis.
Keywords:Biofumigation; brassica; Meloidogyne arenaria; M. javanica; radish; Raphanus sativus; glucosinolate profiles; green manure; Javanica; soil; Isothiocyanates; suppression; crops; tissues; growth.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Plant culture > Field crops > Forage crops. Feed crops
Live Archive:02 Feb 2009 04:55
Last Modified:03 Nov 2022 04:51

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