AZOS-2
| Variety Passport | |
| Country of origin: | Russia |
| Breeder: | AZOS ViV |
| Patent: | №2895, Russia |
| Pedigree given by breeder: | Fillokseroustoychivyy Dzhemete × (paternal form is not specified by the breeder) |
| Rootstock type: | Phylloxera-resistant, Lime-tolerant |
| Agrobiology | |
| Vigor: | vigorous |
| Lateral shoot formation: | weak |
| Resistance to fungal diseases: | resistant |
| Leaf phylloxera susceptibility: | 1 point (highly resistant) |
| Graft compatibility with Vitis vinifera: | high |
| Ampelographic overview |
Origin and Viticultural Significance
The rootstock grape variety AZOS-2 was bred at the Anapa Zonal Experimental Station of Viticulture and Winemaking through the targeted hybridization of the variety Fillokseroustoychivyy Dzhemete with the rootstocks CO4, Creciunel-2, Chasselas × Berlandieri 41-B, or Richter-44. The variety has undergone production trials under the environmental conditions of the Kuban region, has been officially zoned, and is recommended for practical application as a rootstock across all viticultural zones of the Russian Federation.
The commercial value of this rootstock is determined by its short vegetative period, early cane lignification onset, and high suitability for nursery operations. The variety ensures excellent graft compatibility with a wide range of European grape varieties (Vitis vinifera), guaranteeing a high output of first-grade planting material. The development of lime-induced chlorosis has not been observed on this rootstock.
Ampelographic Description
- Leaf: Medium-sized, reniform, three-lobed, almost entire. The margins of the leaf blade characteristically curve upward. The upper surface of the leaf varies from a smooth to a net-wrinkled texture. The main veins exhibit a light cherry coloration at the very base. The lateral sinuses of the blade are small, open, and V-shaped (in the form of an incoming angle). The marginal teeth are small and triangular. The lower surface of the leaf blade features sparse, bristly pubescence located strictly along the veins.
- Petiolar Sinus: Open, wide, with a flat-angled base. The petiole length is shorter than the span of the central leaf vein.
- Shoot and Cane: The vines are characterized by strong growth vigor. The internode length of the shoots ranges between 14 and 16 cm. The mature cane features a distinct brown color. The physiological process of cane lignification is early, initiating in the first days of August. Developed lateral shoots are sparse and remain weakly developed.
Nursery Management and Agrotechnical Features
In commercial nursery production, the AZOS-2 rootstock demonstrates low lateral shoot formation capacity, which minimizes labor costs for canopy management and disbudding in mother blocks. The variety yields a stable average output of standard half-meter cuttings at a rate of 135,000–145,000 cuttings per hectare. The rootstock exhibits absolute resistance to the foliar form of phylloxera (is not infested by the pathogen) and immunity to lime-induced chlorosis. The variety is highly resistant to fungal pathogens; however, in rainy years, isolated downy mildew spots may appear on the foliage in the form of necrotic lesions. High affinity indicators with Vitis vinifera scions facilitate a superior output of standard first-grade vines from the nursery blocks.