420 A
Application submittedVitis berlandieri Planch. x Vitis riparia Michx.
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
Pests
Vitis berlandieri Planch. x Vitis riparia Michx.
V. berlandieri x V. riparia hybrids are used as rootstocks due to their high resistance to the root form of phylloxera, providing protection for Vitis vinifera scions.
In the reference 15 varieties crop Vitis berlandieri Planch. x Vitis riparia Michx., where this is mentioned in the description.
Vitis berlandieri x Vitis riparia hybrids (including varieties SO4, Kober 5BB, 420A) demonstrate a high degree of resistance to root system infestation by Daktulosphaira vitifoliae. This characteristic allows them to effectively support the growth of scion cultivars even in areas infested with the pest.
The resistance of these rootstocks to the leaf form of phylloxera is less pronounced: galls may form on leaves, petioles, and tendrils, where female pests lay their eggs. The trait of resistance to the root form in these hybrids is considered complex, and the existence of specific mapped Rdv genes for this group has not been confirmed.
Although the resistance of this group of rootstocks is considered stable, there are studies suggesting the possibility of phylloxera populations adapting to individual rootstocks. The likelihood of overcoming immunity is associated with the potential presence of segments from susceptible Vitis vinifera in the genotype of historical rootstocks.
General information about the subject — on the page Phylloxera.
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.
Vitis berlandieri Planch. x Vitis riparia Michx.
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
Vitis berlandieri Planch. x Vitis riparia Michx.
Alexandre Teleki
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Land Rheinland-Pfalz, vertreten durch DLR Rheinhessen-Nahe-Hunsrück Dienstsitz Oppenheim
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.
Vitis berlandieri Planch. x Vitis riparia Michx.