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Variety traits

Determinacy

Determinacy is a genetically determined plant growth habit where development is limited by the formation of a specific number of inflorescences. This trait defines bush architecture, maturation rates, and crop management strategies.

Mentioned in descriptions 12 519 varieties reference book.

Determinacy characterizes a plant's ability to cease vegetative growth after setting a fixed number of inflorescences, terminating in an apical flower cluster. Unlike indeterminate varieties that continue to develop throughout the season, determinate forms are distinguished by their compactness and focus on an early transition to the generative phase.

The trait defines the cultivation strategy by ensuring concentrated fruit set, which simplifies mechanized harvesting. This growth type requires specific agrotechniques, as improper pruning can lead to reduced productivity, while the plants themselves often do not require intensive staking.

The evaluation of determinacy during variety testing is conducted through field observations of plant architecture. Agronomists record the number of leaves to the first cluster, total plant height, and the terminal number of inflorescences on the main stem, classifying the variety on a scale from super-determinate to indeterminate forms.

Sources10

Breakdown by crop

Found in these crops

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Nortona

Terminated

Solanum lycopersicum L. · Tomato

NL
1 record

Novak

Active

Solanum lycopersicum L. · Tomato

IT
1 record

Mecheast 22

Terminated

Solanum lycopersicum L. var. lycopersicum · Tomato

IT
1 record

Nicam

Terminated

Solanum lycopersicum L. · Tomato

IT
1 record

Ledy

Active

Solanum lycopersicum L. · Tomato

IT
1 record

Nadja

Terminated

Solanum lycopersicum L. · Tomato

SK
1 record

Melman

Active

Solanum lycopersicum L. · Tomato

UA
2 records

Mecheast 55

Terminated

Solanum lycopersicum L. var. lycopersicum · Tomato

IT
1 record

Mareile

Active

Solanum lycopersicum L. · Tomato

DE
1 record

Maravilla de Vencia

Protection expired

Phaseolus vulgaris L. · Common bean

Sativa coop (IT)

SI
1 record

Nasko-2000

Application submitted

Solanum lycopersicum L. · Tomato

UA
1 record

Murietta

Terminated

Solanum lycopersicum L. · Tomato

NL
1 record

Nadiezhda

Application submitted

Solanum lycopersicum L. · Tomato

UA
1 record

Solanum lycopersicum L. var. lycopersicum · Tomato

IT
1 record

Mariuca

Active

Solanum lycopersicum L. · Tomato

RO
1 record

Mory 33

Application submitted

Solanum lycopersicum L. · Tomato

PL
1 record

Lubino

Active

Solanum lycopersicum L. · Tomato

IT
1 record

Montezuma

Withdrawn

Solanum lycopersicum L. · Tomato

NL
1 record

Solanum lycopersicum L. · Tomato

IT
1 record

Luizet

Terminated

Solanum lycopersicum L. · Tomato

UA
2 records

Mint Julep

Withdrawn

Solanum lycopersicum L. · Tomato

FR
1 record

Medeea

Active

Solanum lycopersicum L. · Tomato

RO
1 record

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