Pests

Nematodes in Prunus davidiana × Prunus persica hybrids

hybrids between Prunus davidiana and Prunus persica

Prunus davidiana × Prunus persica hybrids are frequently affected by root-knot nematodes of the genus Meloidogyne, leading to the formation of root galls and a reduction in plant vigor.

In the reference 14 varieties crop hybrids between Prunus davidiana and Prunus persica, where this is mentioned in the description.

The primary pathogens affecting the root system of this crop are nematodes of the species Meloidogyne incognita, Meloidogyne javanica, Meloidogyne arenaria, and Meloidogyne hispanica. Infection manifests as gall formation, though some pathogen populations, such as Meloidogyne floridensis, are capable of overcoming the resistance of several rootstocks.

Nematode resistance in these hybrids is genetic in nature and is often inherited as a monogenic dominant trait against M. incognita, whereas resistance to M. javanica can be controlled by several dominant genes originating from Prunus davidiana. Breeding work with such rootstocks as Cadaman and Garnem is focused on quantitative trait loci (QTL) mapping.

Despite high resistance to root-knot nematodes, these hybrids remain susceptible to other groups of phytonematodes, including ring nematodes of the genus Mesocriconema. The degree of plant protection can vary significantly depending on the specific cultivar and the regional characteristics of pathogen populations.

General information about the subject — on the page Nematodes.

Sources8

Varieties of hybrids between Prunus davidiana and Prunus persica mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

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hybrids between Prunus davidiana and Prunus persica

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