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  • Title: Host suitability of Ixora spp. for the Root-knot Nematodes Meloidogyne incognita Race 1 and M. javanica.
    Author: Giblin-Davis RM, Meerow AW, Bilz FG.
    Journal: J Nematol; 1992 Dec; 24(4S):722-8. PubMed ID: 19283052.
    Abstract:
    Eight commonly cultivated Ixora species or cultivars were tested for their suitability as hosts and their level of tolerance to Meloidogyne incognita race 1 and M. javanica in a greenhouse study. Twenty weeks postinoculation with 5,000 eggs per pot, M. incognita race 1 and M. javanica produced galls and formed egg masses on roots of all eight Ixora species or cultivars tested. However, only M. javanica-infected 'Petite Yellow' and 'Maui' had decreases (P </= 0.05) in root wet weights, suggesting that the other cultivars were more tolerant to these root-knot nematode species. Differential host suitability to each Meloidogyne species was based on the relative number of galls, galls per gram root weight, egg masses, and second-stage juveniles produced per plant. 'Bonnie Lynn,' 'Maui,' and 'Petite Red' were good to excellent hosts for both Meloidogyne spp. Ixora coccinea was a good host for M. incognita race 1 but less suitable for M. javanica. 'Singapore' and 'Petite Yellow' were poor hosts for M. incognita race 1 but excellent hosts for M. javanica. 'Nora Grant' and I. casei 'Super King' were poor hosts for both species of root-knot nematodes.
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