Characterization Sheet for Heirloom Tomato '646'

History and Origin of the Variety

Traditional Russian variety, originating from the Khilenko family in Armavir (Russia). It was widely distributed

commercially by Tatiana's TOMATObase as of 2016.

Curiosities of Variety

- Family origin: Preserved for generations in a Russian family.

- Attractive color: Raspberry red or pink fruits, with green shoulders.

- Sweet taste: Juicy texture and aromatic flavor.

- Ideal size: Beefsteak type fruits of 150-300 g.

- Robust crop: Vigorous plant, indeterminate growth.

Cultural Importance

An example of Eastern European horticultural heritage, preserved outside of commercial circuits.

It represents the genetic diversity of family farming.

Plant Descriptors

Growth type: Indeterminate

Growth habit: Erect, vigorous

Height: Tall (~1.8 m)

Vigor: Strong

Stem color: Green

Pubescence: Present

Leaf type: Compound

Leaf color: Green

Leaflet: Regular, toothed

Fruit Descriptors

Shape: Round to slightly flattened

Weight: 150-300 g

Diameter: 6-8 cm

Immature color: Green with shoulders

Ripe color: Raspberry red / pink

Ribs: Slightly marked

Pulp: Reddish pink, firm and very juicy

Locules: 6-8

Seeds: Intermediate (~50-100)

Agronomic Characteristics

Flowering: 60-70 days

Harvest: Medium-early

Performance: High

Fruits per plant: 5-8

Harvest: Staggered

Heat tolerance: Good

Cold: Sensitive

Brightness: Regular

Resistances and Tolerances

Alternaria, Fusarium, Verticillium, Mildew, Viruses and Common Pests: Sensitive (estimated, typical in heirlooms)

Special Characteristics of the '646' Variety

Attributes:

- Sweet and aromatic flavor

- Raspberry red or pink color

- Ideal beefsteak type size

- Vigorous and productive plant

- Suitable for fresh consumption and seed preservation

Limitations:

- Sensitive to diseases

- Requires good irrigation management

- It needs a warm climate for good development