Variety traits

Vegetation period of Vitis berlandieri Planch. x Vitis riparia Michx.

Vitis berlandieri Planch. x Vitis riparia Michx.

The biological cycle of the hybrids, measured from bud break to leaf fall, ranging from 180–200 days with an active temperature sum of 3000–3300°C.

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

For interspecific hybrids of Vitis berlandieri Planch. x Vitis riparia Michx., the vegetation period lasts from 180 to 200 days, requiring an active temperature sum in the range of 3000–3300°C. These rootstocks begin vegetation 4–5 days later than V. riparia species, demonstrating a moderate cycle duration optimal for the conditions of most viticultural regions.

The duration of the rootstock's vegetation directly influences the ripening time of the scion and the maturation intensity of the annual vine, which reaches 75–90% in these hybrids. Matching this period with the regional climatic resources is a determining factor for the accumulation of nutrient reserves necessary for successful overwintering and ensuring the nutrition of the grafted plant in the following season.

General information about the subject — on the page Vegetation period.

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.