Characterization Descriptors of the Heirloom Tomato "Gregory Altaï"
Infinite Seeds Association
We curate, preserve, and reproduce a collection of 1,700 heirloom and heritage tomato varieties for public use. We work to prevent genetic erosion.
History and Origin of the Variety
Historical Origin
Gregory Altaï is an extraordinary Siberian heirloom variety that represents one of the hardiest and most adaptable beefsteak tomatoes in the world's colder regions. This historic variety originates in the Altaï Mountains, in the Novosibirsk region of Siberia, specifically on the border between Russia and China, an area known for its extreme climatic conditions and vast mountain landscapes.
The fascinating history of Gregory Altaï is intertwined with the international cultural exchanges of the late 20th century. In 1989, Bill McDorman of Seeds Trust participated in a pioneering horticultural expedition to Siberia with Earth Stewards from Eugene, Oregon. This historic "Great Siberian Adventure" aimed to discover heirloom varieties that could bring hardiness and adaptability to Western crops.
During this expedition, McDorman collected seeds from numerous traditional Siberian varieties that were completely unknown in the United States. Gregory Altaï was one of these botanical gems that helped fuel the growing American interest in heirloom varieties. This variety immediately stood out for its extraordinary adaptability to both short-season cold climates and intense heat.
Traditional farmers in the Altai Mountains developed this variety for generations, selecting plants that could thrive in Siberia's extreme continental climate, characterized by brutally cold winters and short but intense summers. The result was an exceptionally hardy tomato with beefsteak-like characteristics, a rare combination that made it a highly prized variety.
Curiosities of Variety
Historic Expedition: Introduced to the West in 1989 during the historic Seeds Trust expedition to Siberia
Extreme resistance: Developed to withstand the harshest climatic conditions of central Siberia
International Award: Winner of Organic Gardening Magazine awards for exceptional quality
Dual Adaptability: Only variety that thrives in both short-season cold climates and extreme heat conditions
Mountain heritage: Originating from the legendary Altaï Mountains, a natural border between multiple civilizations
Heirloom precursor: One of the first Siberian varieties to popularize the heirloom movement in America
Unique texture: Famous for its flesh so dense and firm that it can be cut into ultra-thin sheets like paper
Nomadic Heritage: Traditionally cultivated by the semi-nomadic shepherd communities of the region
Genetic reserve: Considered a genetic treasure for the development of climate-resistant varieties
Cultural Importance
Gregory Altaï transcends its horticultural value to become a symbol of the extraordinary resilience and adaptability that plants can achieve when selected for generations under extreme conditions. This variety represents the perfect harmony between the traditional wisdom of the Siberian peoples and the modern need for genetic diversity.
Its introduction to the West marked a milestone in the conservation of heirloom varieties, demonstrating that the best solutions to contemporary agricultural challenges often lie in the ancestral traditions of remote regions. Gregory Altaï became an ambassador for Siberian genetic wealth and a catalyst for cross-continental seed exchange.
The region of origin, the Altai Mountains, is considered one of the world's most important centers of biodiversity and has been declared a UNESCO World Heritage Site as the "Golden Mountains of Altai." This area represents the confluence of unique ecosystems where the Siberian taiga meets the steppes of Kazakhstan and the semi-deserts of Mongolia.
The variety has inspired a new generation of horticulturalists and conservationists to seek out and preserve traditional varieties from climatically challenging regions, contributing significantly to the global movement for seed conservation and agricultural genetic diversity.
1. PLANT DESCRIPTORS
Feature |
Evaluation for "Gregory Altaï" |
Type of growth |
Indeterminate |
Growth habit |
Erect and vigorous |
Plant height |
Tall (180-220 cm) |
Plant vigor |
Exceptional |
Color of young stem |
Green |
Pubescence of the stem |
Present |
Hair density |
Average |
Leaf type |
Regular (not potato type) |
Leaf color |
Dark green |
Leaflet shape |
Regular |
Leaflet edge |
Jagged |
Leaf pubescence |
Present |
3. FRUIT DESCRIPTORS
Feature |
Evaluation for "Gregory Altaï" |
Fruit shape |
Flattened slightly ribbed |
Fruit weight |
Large (200-500 g) |
Fruit diameter |
Large (8-12 cm) |
Color of unripe fruit |
Green |
Color of ripe fruit |
Deep pink-purple |
Color intensity |
Very intense |
Color uniformity |
Uniform with slight nuances |
Presence of green shoulders |
Occasional |
Shoulder shape |
Rounded with slight grooves |
Surface smoothness |
Slightly wavy |
Presence of ribs |
Slightly ribbed |
Fruit shine |
Bright |
Chalice scar |
Median |
Pistil scar |
Small |
Number of locules |
6-8 (multilocular) |
Distribution of locules |
Regular |
Thickness of the walls |
Very thick (8-10 mm) |
Firmness of the pulp |
Extremely firm and dense |
Pulp color |
Deep pink |
Amount of juice |
Juicy |
Quantity of seeds |
Few (<25) |
6. AGRONOMIC CHARACTERISTICS
Feature |
Evaluation for "Gregory Altaï" |
Days to flowering |
Very early (50-60) |
Days to harvest |
Early (67-80 days from sowing) |
Yield per plant |
Tall (5-8 kg) |
Number of fruits per plant |
Medium-high (10-20) |
Harvest concentration |
Staggered (July-October) |
Heat tolerance |
Excellent |
Cold tolerance |
Exceptional |
Low light adaptation |
Good |
Recommended spacing |
60-80 cm between plants |
7. RESISTANCES AND TOLERANCES
Feature |
Evaluation for "Gregory Altaï" |
Alternaria (Alternaria solani) |
Resistant |
Fusarium (Fusarium oxysporum) |
Moderately resistant |
Verticillium (Verticillium dahliae) |
Resistant |
Mildew (Phytophthora infestans) |
Moderately susceptible |
Powdery mildew (Leveillula taurica) |
Moderately resistant |
Bacterial wilt (Ralstonia solanacearum) |
Moderately susceptible |
Bacterial freckle (Pseudomonas syringae) |
Susceptible |
Tomato mosaic virus (ToMV) |
Moderately resistant |
Yellow leaf curl virus (TYLCV) |
Resistant |
Whitefly (Bemisia tabaci) |
Moderately resistant |
Trips (Thrips tabaci) |
Susceptible |
Aphids |
Susceptible |
Cracking |
Very resistant |
SPECIAL CHARACTERISTICS OF THE "GREGORY ALTAÏ" VARIETY
Featured Attributes:
• Exceptional sweet and balanced flavor: Perfect balance between sweetness and acidity with complex notes and intense aroma
• Extraordinary precocity for beefsteak: One of the earliest large tomato varieties in the world
• Exceptional climate resistance: Extraordinary adaptation to both extreme cold climates and intense heat
• Unique Siberian Heritage: Heirloom variety with over a century of selection under extreme conditions
• Ultra-firm flesh: Exceptionally dense flesh allows for ultra-thin, paper-thin cuts
• Climatic versatility: Ideal for both short seasons and Mediterranean climates
• Exceptional productivity: Consistently high performance throughout the growing season
• Stress resistance: Exceptional tolerance to adverse conditions and sudden climate changes
Limitations:
• Support needs: Requires solid staking due to its vigorous growth and fruit weight.
• Moderate sensitivity to mildew: May require protection in high humidity conditions
• Pruning management: Regular pruning benefits to optimize fruit production and size.
• Specific spacing: It needs adequate planting frames for optimal development.
• Frost sensitivity: Does not tolerate temperatures below 10°C
Recommended Uses:
• Gourmet salads: Excellent for salads where the balanced flavor and firm texture stand out
• Ultra-thin cuts: Ideal for preparations that require very thin slices due to their unique texture
• Short-season cuisine: Perfect for regions with short summers looking for quality tomatoes
• Premium preservation: Excellent for artisanal preserves due to its firmness and concentrated flavor
• Growing in extreme climates: Essential for orchards in regions with challenging climatic conditions
• Siberian variety collection: Essential for cold-climate heirloom tomato collections
• Sustainable agriculture: Ideal for agricultural systems seeking resilient and adaptable varieties
• Research on resilience: Valuable for studies on climate adaptation and genetic resistance
• Horticultural tourism: Attractive for agricultural experiences and education about Siberian biodiversity
• Specialized markets: For consumers who value historic varieties with unique characteristics
• High mountain restoration: Valued by chefs seeking ingredients with history and distinctive flavor
• Conservation Education: Model for teaching about the importance of preserving genetic diversity
Data based on Seeds Trust documentation, records from the 1989 Siberian expedition, information from Organic Gardening Magazine, studies on Siberian heirloom varieties, testimonies from traditional farmers in the Altai Mountains, and references on climate adaptation of tomato varieties.