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    An investigation of the susceptibility of varieties of lucerne, Medicago sativa L., to the nematode Ditylenchus dipsaci (Kuhn)

    Burnett, P. A.
    Abstract
    The results of testing lucerne for resistance to the stem nematode Ditylenchus dipsaci are recorded. A major part of the study was given to perfecting a technique for growing lucerne seedlings for inoculation with nematodes. Two techniques were tried and filter paper rolls were found to be superior to soil flats. The technique of growing seedlings in filter paper rolls and inoculating them with nematodes was used to produce a rating of the resistance for the New Zealand variety of lucerne, Wairau, when compared with a known resistant variety, Washoe and a susceptible variety, Grimm. From the results obtained Wairau must be classified as a susceptible variety. It appears that a selection within a variety of lucerne for resistance to Ditylenchus dipsaci could be made by eliminating the swollen plants. However, to obtain the relative resistances of several varieties, it would be necessary to obtain a measure of the reproductive rates of the nematodes in the plants.... [Show full abstract]
    Keywords
    lucerne; Medicago sativa L.; Ditylenchus dipsaci; plant pathogenic nematode; stem nematode; inoculation; lucerne establishment; plant diseases; pests; Canterbury; New Zealand; propagation; parasites; crop rotation; susceptibility; resistance
    Fields of Research
    070308 Crop and Pasture Protection (Pests, Diseases and Weeds); 060704 Plant Pathology; 060307 Host-Parasite Interactions
    Date
    1971
    Type
    Thesis
    Collections
    • Masters Theses [731]
    • Department of Wine, Food and Molecular Biosciences [470]
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    https://hdl.handle.net/10182/4042
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