Variety traits
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.
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.
Solanum lycopersicum L. · Tomato
Asgrow Seed Company (US)/Bruinsma (NL)
Solanum lycopersicum L. · Tomato
FRITS HERLAAR
Solanum lycopersicum L. · Tomato
Katarzyna Grabka
Lupinus luteus L. · Yellow lupin
Poznanska Hodowla Roslin Sp. z o.o
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
Tezier SA (FR)
Solanum lycopersicum L. · Tomato
Pieterpik B.V.
Solanum lycopersicum L. · Tomato
VILMORIN, S.A.
Solanum lycopersicum L. · Tomato
ReinSaat KG
Solanum lycopersicum L. · Tomato
Zeraim Gedera Ltd. Seed Company
Solanum lycopersicum L. · Tomato
PLANTENKWEKERIJ VREUGDENHIL B.V.
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
Glycine max (L.) Merr. · Soybean
Semican INC (CA)
Solanum lycopersicum L. · Tomato
HAZERA GENETICS
Solanum lycopersicum L. · Tomato
keine Angabe
Solanum lycopersicum L. · Tomato
Pieterpik B.V.
Solanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
Solanum lycopersicum L. · Tomato
Kees Konst
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland B.V. (Variety Administration)
Solanum lycopersicum L. · Tomato
MORAVOSEED CZ A.S.
Solanum lycopersicum L. · Tomato
Prosem (FR)
Solanum lycopersicum L. · Tomato
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Solanum lycopersicum L. · Tomato
Monsanto Vegetable IP Management B.V.