Articles

RESPONSE OF NEW INTERSPECIFIC HYBRIDS FOR PEACH TO ROOT-KNOT AND LESION NEMATODES, AND CROWN GALL

Article number
592_99
Pages
707 – 716
Language
English
Abstract
Twenty-one Prunus rootstocks were evaluated under greenhouse conditions against the root-knot nematode Meloidogyne javanica (two trials), lesion nematode Pratylenchus vulnus (two trials) and crown gall, Agrobacterium tumefaciens (one trial). Evaluated rootstocks are experimental genotypes or new commercial Prunus of European, American and Russian origin compatible with peach.
Many are interspecific hybrid rootstocks bred specifically for root-knot nematode resistance.
To assure a nematode pathogenic diversity, rootstocks were challenged against mixtures of 7 isolates of M. javanica and 5 isolates of P. vulnus. Most rootstocks were found to be resistant to M. javanica. The plum ‘BS N2’ was resistant to P. vulnus, the rest being susceptible.
All rootstocks challenged against A. tumefaciens showed different levels of susceptibility with exception of ‘Torinel’, a plum rootstock used as a moderately resistant control.
None of the tested materials showed multiple resistance against either nematode species and the bacteria.

Publication
Authors
J. Pinochet, C. Fernández, M. Cunill, J. Torrents, A. Felipe, M.M. López, B. Lastra, R. Penyalver
Keywords
rootstocks, resistance, Prunus, Meloidogyne javanica, Pratylenchus vulnus, Agrobacterium tumefaciens
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