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.
Cucumis sativus L. · Cucumber
De Ruiter Zonen (HR)
Solanum lycopersicum L. · Tomato
Shevchenko Igor
Solanum lycopersicum L. · Tomato
Paul Degreef
Cicer arietinum L. · Chickpea
Instituto Nacional de Investigacao Agraria (PT)
Solanum lycopersicum L. · Tomato
Michael Edwin Kuenh
Solanum lycopersicum L. · Tomato
ROYAL SLUIS
Solanum lycopersicum L. · Tomato
Rene Khenkuet
Solanum lycopersicum L. · Tomato
PETOSEED CO
Solanum lycopersicum L. · Tomato
Tezier SA (FR)
Solanum lycopersicum L. · Tomato
Sakata Seed Sudamerica Ltd (BR)
Solanum lycopersicum L. · Tomato
SAIS SPA- Cesena (IT)
Solanum lycopersicum L. · Tomato
Vilmorin & Cie
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Solanum lycopersicum L. · Tomato
isi Sementi s.p.a. Frazione (IT)
Solanum lycopersicum L. · Tomato
Cora Seeds SRL, I
Solanum lycopersicum L. · Tomato
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
Rijk Zwaan B.V.
Solanum lycopersicum L. · Tomato
MORAVOSEED CZ A.S.
Solanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
Solanum lycopersicum L. · Tomato
L. Zagorcheva, M. Stoyanov, L. Stamova
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.