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
Syngenta Seeds B.V. (NL)
Glycine max (L.) Merr. · Soybean
RAGT 2N S.A.S
Solanum lycopersicum L. · Tomato
SEMILLAS FITO, S.A.
Solanum lycopersicum L. · Tomato
Petoseed Co INC (US)
Solanum lycopersicum L. · Tomato
Royal Sluis (NL)
Glycine max (L.) Merr. · Soybean
SAATZUCHT DONAU GES.M.B.H. & COKG
Cucumis sativus L. · Cucumber
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Capsicum annuum L. · Bell pepper
Oxadis
Solanum lycopersicum L. · Tomato
Johannes Barten
Pisum sativum L. · Pea
LANDBOUWBUREAU WIERSUM
Solanum lycopersicum L. · Tomato
Petr Klapste
Solanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
Glycine max (L.) Merr. · Soybean
Santiago Fleming
Capsicum annuum L. · Bell pepper
Seminis Vegetable Seeds
Pisum sativum L. · Pea
SATIVA VIA CALCINARO 2425
Solanum lycopersicum L. · Tomato
VILMORIN, S.A.
Capsicum annuum L. · Bell pepper
RUSKO JOZSEFNE
Solanum lycopersicum L. · Tomato
De Ruiter Zonen (HR)
Cucumis sativus L. · Cucumber
MORAVOSEED
Phaseolus vulgaris L. · Common bean
Seminis Vegetable Seeds
Solanum lycopersicum L. · Tomato
De Ruiter Zonen (HR)
Solanum lycopersicum L. · Tomato
HEBREW UNI/HAZERA
Cucumis sativus L. · Cucumber
Bejo Zaden B.V.