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
S&G SEEDS B.V.
Solanum lycopersicum L. · Tomato
Monsanto Vegetable, NL
Cucumis sativus L. · Cucumber
NUNZA BV, NL
Solanum lycopersicum L. · Tomato
Petr Klapste
Capsicum annuum L. · Bell pepper
Mr. J.Rusko, HU
Lupinus angustifolius L. · Narrow-leaf lupin
I.G. SAATZUCHT VERWALTUNG| I.G. Saatzucht Verwaltungs GmbH
Solanum lycopersicum L. · Tomato
NOVARTIS SEEDS B.V.
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Solanum lycopersicum L. · Tomato
Paul Degreef
Solanum lycopersicum L. · Tomato
Kees Konst
Capsicum annuum L. · Bell pepper
Sakata Vegetables Europe SARL (FR)
Solanum lycopersicum L. · Tomato
HAZERA GENETICS
Solanum lycopersicum L. · Tomato
Paul Degreef
Solanum lycopersicum L. · Tomato
Syngenta Seeds, NL
Solanum lycopersicum L. · Tomato
Marctl Mooij
Phaseolus coccineus L. · Runner bean
Semenarna Ljubljana, SI
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
DE RUITER SEEDS
Solanum lycopersicum L. · Tomato
WESTERN SEED ESPAÑA, S.A.
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Solanum lycopersicum L. · Tomato
UO «BELORUSSKAYA GOSUDARSTVENNAYA ORDENOV OKTYABRSKOJ REVOLYUCII I TRUDOVOGO KRASNOGO ZNAMENI SELSKOXOZYAJSTVENNAYA AKADEMIYA» GNU «INSTITUT GENETIKI I CZITOLOGII NAN BELARUSI»
Solanum lycopersicum L. · Tomato
Kees Konst
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
Paul Degreef