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    Pathogenicity of the root-lesion nematode, pratylenchus zeae, on rice genotypes under different hydro-ecologies in Tanzania

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    Journal Article (6.413Mb)
    Date
    2020
    Author
    Nzogela, Y.B.
    Landschoot, S.
    Kihupi, A.L.
    Coyne, D.L.
    Gheysen, G.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    The root-lesion nematode, Pratylenchus zeae, is commonly found in upland rice fields. To measure the impact of the nematode on rice production, a screenhouse experiment was conducted using two farmer-adapted Oryza sativa cultivars, ‘Supa’ (‘SurinamV-880’) and ‘SARO-5’ (‘TXD 306’), under flooded, upland and drought water regimes imposed at 7 days post-inoculation of mixed-stage nematodes (200, 500, 1000, 3000 and 10 000 plant−1). Growth and yield parameters were recorded, and the experiment was terminated after 5 months. ‘Supa’ was shown to be resistant to P. zeae, while ‘SARO-5’ was susceptible. Pratylenchus zeae reduced the growth and yield of both cultivars, though more for ‘SARO-5’ than for ‘Supa’. Yield decreased with increasing final nematode densities. Pratylenchus zeae reproduction was highest at 200 and 500 inoculum levels and under upland water conditions. The yield of ‘SARO-5’ was greater than that of ‘Supa’ under flooded conditions and with no or 200 and 500 nematode inoculum levels, but with high P. zeae inoculum ‘Supa’ yield was better than ‘SARO-5’.
    https://dx.doi.org/10.1163/15685411-00003302
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7589
    IITA Authors ORCID
    Daniel Coynehttps://orcid.org/0000-0002-2030-6328
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1163/15685411-00003302
    Research Themes
    Natural Resource Management
    IITA Subjects
    Agronomy; Disease Control; Farming Systems; Food Security; Natural Resource Management; Plant Production
    Agrovoc Terms
    Rice; Oryza Sativa; Reproduction; Resistance To Injurious Factors; Yields; Yield Losses; Tanzania
    Regions
    Africa; East Africa
    Countries
    Tanzania
    Hubs
    Eastern Africa Hub
    Journals
    Nematology
    Collections
    • Journal and Journal Articles5078
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