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.

Miri Miri

Application submitted

Solanum lycopersicum L. · Tomato

ReinSaat KG

3 records

N 00296

Active

Solanum lycopersicum L. · Tomato

Nunhems B.V.

2 records

Murastar

Application submitted

Solanum lycopersicum L. · Tomato

Sakata Seed Corporation, JP

1 record

Morden

Application submitted

Solanum lycopersicum L. · Tomato

Stacja Hodowli Roślin Ogrodniczych Pass

2 records

MESNADA

Active

Solanum lycopersicum L. · Tomato

INTERSEMILLAS SAU

1 record

Melodiya F1

Active

Solanum lycopersicum L. · Tomato

J. Hoogstarten

2 records

Megana F1/Mehana F1

Active

Solanum lycopersicum L. · Tomato

Hari Besels

1 record

Meys F1

Active

Solanum lycopersicum L. · Tomato

Ali Yuksel

2 records

Merrygold

Application submitted

Solanum lycopersicum L. · Tomato

BURPEE NL B.V.

2 records

MCLAREN

Application submitted

Solanum lycopersicum L. · Tomato

HAZERA SEEDS BV

1 record

Millennium F1

Active

Solanum lycopersicum L. · Tomato

Boni Paolo

2 records

MICHELE F1

Terminated

Solanum lycopersicum L. · Tomato

Paulo Koch

2 records

Minaret F1

Terminated

Solanum lycopersicum L. · Tomato

Jozsef Mozsar

1 record

Mimino F1

Terminated

Cucumis sativus L. · Cucumber

Dymchenko Tetiana Mykolaivna, Muzhylko Viktor Valentynovych,

2 records

Malynovyi dzvin

Terminated

Solanum lycopersicum L. · Tomato

Skliarevs`ka Valentyna Vasylivna, Chernenko Kateryna Mykhailivna, Kuraksa Nina Petrivna,

1 record

Marissa F1

Terminated

Solanum lycopersicum L. · Tomato

Hari Besels

1 record

Makarena F1

Terminated

Solanum lycopersicum L. · Tomato

Sylvain Bontems

1 record

Melody

Active

Solanum lycopersicum L. var. lycopersicum · Tomato

BLUMEN GROUP S.P.A

1 record

Merveille Blanche

Terminated

Solanum lycopersicum L. · Tomato

Domaine Public (FR)

1 record

MALLORCA

Terminated

Solanum lycopersicum L. · Tomato

SEMILLAS BATLLE, S.A.

1 record

Matias F1

Terminated

Solanum lycopersicum L. · Tomato

Johannes Barten

4 records

Meco

Active

Rubus idaeus L. · Red raspberry

Institut National de la Recherche Agronomique (FR)/Association Nationale des Producteurs de Petits Fruits (FR)

3 records

MASSON

Active

Solanum lycopersicum L. · Tomato

Katarzyna Grabka

1 record

Magnetik

Withdrawn

Solanum lycopersicum L. · Tomato

Moshe Zalsman

2 records

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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.