Pests

Nematodes — Vitis berlandieri Planch. x Vitis riparia Michx.

Vitis berlandieri Planch. x Vitis riparia Michx.

Vitis berlandieri x Vitis riparia hybrids used as rootstocks generally exhibit low to moderate resistance to Meloidogyne spp. and Xiphinema index nematodes.

In the reference 5 varieties crop Vitis berlandieri Planch. x Vitis riparia Michx., where this is mentioned in the description.

This group of rootstocks is characterized by susceptibility to root-knot nematodes and dagger nematodes. Infestation by Meloidogyne spp. manifests as the formation of galls on the root system, which causes general plant stunting. The interaction with Xiphinema index is particularly dangerous because these nematodes act as vectors for grapevine fanleaf virus, while visual symptoms of root damage may be poorly expressed.

The resistance of specific rootstocks within this group ranges from moderate to susceptible, depending on the nematode pathotype. Despite the existence of some breeding lines with increased resistance, this group of hybrids generally lacks a high level of resistance, which necessitates careful rootstock selection for nematode-infested sites.

General information about the subject — on the page Nematodes.

Sources8

Varieties of Vitis berlandieri Planch. x Vitis riparia Michx. 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.