The IVV-CNR Unit of Grugliasco (TO) over the time selected and registered in the National Grapevine Cultivar Catalogue more than 90 clones belonging to 24 cultivars of north-west Italy. The primary sources of these clones are preserved and pre-multiplicated according with official regulations by the Grapevine Premultiplication Centre of Piedmont (CEPREMAVI), based in Alba (CN) and managed by Vivalb on behalf of the Piemonte Region. Premultiplication supplies the commercial nurseries with selected and virus-free propagation material ("base"). In recent time, due to the spread of pythoplasma infection in northern Italy, CEPREMAVI has set a new approach in the production of clonal 'base' material, introducing the complete isolation of the mother plant vineyards (MPV) from ground (except roots) and the outside and applying the hot water treatment (HWT) to the dormant wood before propagation. The attempt is to prevent at the highest level any possible virus and phytoplasma infection in the propagated material. The healthy clonal 'primary sources' are kept individually potted inside a screen-house. Each clone is represented by three plants (on its own roots). The isolation from the soil and from the outside, thanks to a double insect-proof net, safeguards the original sanitary status of the clones. According to the national regulations, the so-called 'initial material' is collected from those mother plants to establish the MPV suitable for the production of 'base' material. The new technique consists in planting in the field the MPV under a cover of an insect-proof tunnel provided with a double room entrance and with the complete plastic mulching of the ground. Each plant row is isolated from the others. Along the rows a metallic structure is designed to support the net coverage as well as the wire sets to uphold the plant canopy. In the upper part of the tunnels a plastic pipe runs with sprinklers for fungicide and insecticide sprays. Vineyard management (i.e. the entry of workers inside the tunnels) is limited to green and winter pruning, and to routine sanitary inspections. The woody propagation materials collected from the covered MPV are then processed by HWT at a minimum of 50°C x 45' before grafting .
Tecniche innovative per la premoltiplicazione della vite: l'esperienza del Ce.Pre.Ma.Vi.
Mannini F
2012
Abstract
The IVV-CNR Unit of Grugliasco (TO) over the time selected and registered in the National Grapevine Cultivar Catalogue more than 90 clones belonging to 24 cultivars of north-west Italy. The primary sources of these clones are preserved and pre-multiplicated according with official regulations by the Grapevine Premultiplication Centre of Piedmont (CEPREMAVI), based in Alba (CN) and managed by Vivalb on behalf of the Piemonte Region. Premultiplication supplies the commercial nurseries with selected and virus-free propagation material ("base"). In recent time, due to the spread of pythoplasma infection in northern Italy, CEPREMAVI has set a new approach in the production of clonal 'base' material, introducing the complete isolation of the mother plant vineyards (MPV) from ground (except roots) and the outside and applying the hot water treatment (HWT) to the dormant wood before propagation. The attempt is to prevent at the highest level any possible virus and phytoplasma infection in the propagated material. The healthy clonal 'primary sources' are kept individually potted inside a screen-house. Each clone is represented by three plants (on its own roots). The isolation from the soil and from the outside, thanks to a double insect-proof net, safeguards the original sanitary status of the clones. According to the national regulations, the so-called 'initial material' is collected from those mother plants to establish the MPV suitable for the production of 'base' material. The new technique consists in planting in the field the MPV under a cover of an insect-proof tunnel provided with a double room entrance and with the complete plastic mulching of the ground. Each plant row is isolated from the others. Along the rows a metallic structure is designed to support the net coverage as well as the wire sets to uphold the plant canopy. In the upper part of the tunnels a plastic pipe runs with sprinklers for fungicide and insecticide sprays. Vineyard management (i.e. the entry of workers inside the tunnels) is limited to green and winter pruning, and to routine sanitary inspections. The woody propagation materials collected from the covered MPV are then processed by HWT at a minimum of 50°C x 45' before grafting .I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
