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

Tomato determinacy 3 183 Tomato Determinate Growth 195 Cucumber determinacy 154 Determinacy in Soybean 146 Pepper determinacy 134 Bean determinacy 94 Determinate growth in peas 46 Determinacy — White Lupin 17 Buckwheat determinacy 14 Determinacy — Narrow-leafed lupin 14 Determinacy — Tomato (Interspecific Hybrids) 12 Determinacy — faba bean 10 Determinacy — Faba bean 9 Determinacy in small-seeded faba bean 8 Determinacy in Faba Bean 6 Determinacy — Yellow Lupine 5 Cotton Determinacy 5 Determinacy in Cucurbita maxima 4 Potato determinacy 4 Determinacy — Scarlet Runner Bean 4 Cotton determinacy 3 Eggplant determinacy 3

Found in these crops

Tomato 3 279 Tomato 198 Bell pepper 168 Cucumber 166 Soybean 158 Common bean 103 Pea 48 White lupin 20 Narrow-leaf lupin 18 Yellow lupin 15 Buckwheat 14 Broad bean 13

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.

Madagaskar

Active

Solanum lycopersicum L. · Tomato

Enza Zaden Beheer B.V.

2 records

Maxim

Withdrawn

Solanum lycopersicum L. · Tomato

Dutch American Plantbreeders Corp.

1 record

Lugel

Terminated

Lupinus albus L. · White lupin

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

Luciebell

Withdrawn

Solanum lycopersicum L. · Tomato

Pro-Veg Seeds Ltd. Unit N Peek House, Dales Manor Business Park

2 records

Lugas F1

Terminated

Solanum lycopersicum L. · Tomato

(Komlosi Csilla), (Hodozy Sandor), (Farkas Jozsef),

1 record

MANAROLA

Active

Solanum lycopersicum L. · Tomato

HM.CLAUSE

1 record

Lorissa

Terminated

Solanum lycopersicum L. · Tomato

Les Graines Caillard Sa (FR)

2 records

Mal`chyk-s-pal`chyk F1

Terminated

Cucumis sativus L. · Cucumber

Oriekhova Olena Anatoliivna, Krylov Oleh Mykolaiovych, Borysov Oleksandr Volodymyrovych,

1 record

LORD

Withdrawn

Solanum lycopersicum L. · Tomato

PETOSEED CO

1 record

Malynove Vikante

Active

Solanum lycopersicum L. · Tomato

Lashyn Oleksandr Volodymyrovych, Hurin Maksym Viktorovych, Kuz`omens`kyi Oleksandr Volodymyrovych,

2 records

Mahalaxmi

Withdrawn

Solanum lycopersicum L. · Tomato

Krishidhan Seeds Europe B.V.

2 records

Magdalena F1

Terminated

Cucumis sativus L. · Cucumber

Khenk van Kooten

1 record

Listell F1

Terminated

Solanum lycopersicum L. · Tomato

Bev Van Den Bosch

2 records

Madona

Terminated

Solanum lycopersicum L. · Tomato

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

1 record

MADONNA

Terminated

Solanum lycopersicum L. · Tomato

Seminis Vegetable Seeds

1 record

Madison

Terminated

Solanum lycopersicum L. var. lycopersicum · Tomato

S&G Seeds B. V.

1 record

Liona F1

Terminated

Solanum lycopersicum L. · Tomato

Mercier Jean-Claude

1 record

MAC NAIR 235

Terminated

Gossypium hirsutum L. · Upland cotton

MC.NAIR SEED CO.

1 record

Lylia

Withdrawn

Solanum lycopersicum L. · Tomato

Domaine Public (FR)

1 record

Malinka Star

Active

Solanum lycopersicum L. · Tomato

MAURIZIO BACCHI

2 records

Malika

Terminated

Solanum lycopersicum L. · Tomato

Tezier SA (FR)

2 records

Lorely F1

Terminated

Solanum lycopersicum L. · Tomato

Mercier Jean-Claude

1 record

Long maraicher

Terminated

Cucumis sativus L. · Cucumber

Domaine Public (FR)

1 record

Levanzo F1

Terminated

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

1 record

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.