Response of Perennial Herbaceous Ornamentals to Meloidogyne hapla
Abstract
Sixty-nine herbaceous perennial ornamentals in 56 genera were evaluated for root galling after 2 months in soil infested with Meloidogyne hapla under greenhouse conditions. Plants were rated susceptible or resistant based on the number of galls present on the root system. Thirty-six percent had more than 100 galls on the roots (similar to 'Rutgers' tomato controls) and were rated susceptible. Thirty percent of the plants tested did not have galls or egg masses present on the root system and were rated resistant. The remaining 34 percent were intermediate in response. Variation in response to M. hapla was observed within plant genera and species. The identification of M. hapla-resistant perennial ornamentals will aid in management of this nematode in landscapes and production fields. Key words: Meloidogyne hapla, nematode, nonhost, ornamental, perennial, resistance, root-knot nematode.Downloads
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