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    Susceptibility of four grapevine rootstocks to Cylindrocladiella parva

    Brown, Dalin S.; Jaspers, Marlene V.; Ridgway, Hayley J.; Barclay, Candice J.; Jones, Elizabeth E.
    Abstract
    The susceptibility of four common grapevine rootstocks (101-14, Schwarzmann, 5C and Riparia Gloire) to Cylindrocladiella parva (black foot disease) infection was assessed in a pot experiment. The roots of 4-month-old callused rooted cuttings were wounded in situ and inoculated with 50 ml C. parva conidial suspension (106/ml) or sterile water (controls). After 6 months of growth, shoot dry weight was significantly higher for control plants (24.2 g) than for those inoculated with C. parva (16.5 g), but did not differ between rootstock varieties. Root dry weight was not significantly affected by C. parva inoculation, but root dry weight of 101-14 was significantly higher than other rootstocks. Incidence and severity of trunk infection were significantly affected by rootstock variety, being lowest in rootstock 101-14 plants than other rootstocks. None of the rootstocks tested was resistant to this pathogen.... [Show full abstract]
    Keywords
    black foot disease; disease severity; trunk infection
    Fields of Research
    070604 Oenology and Viticulture; 0706 Horticultural Production
    Date
    2013
    Type
    Journal Article
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    • Department of Pest Management and Conservation [703]
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    © 2013 New Zealand Plant Protection Society (Inc.)
    Citation
    Brown, D.S., Jaspers, M.V., Ridgway, H.J., Barclay, C.J., & Jones, E.E. (2013). Susceptibility of four grapevine rootstocks to Cylindrocladiella parva. New Zealand Plant Protection, 66, 249-253.
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