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
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
Tezier SA (FR)
Solanum lycopersicum L. var. lycopersicum · Tomato
ASGROW ITALIA VEGETABLE SEEDS SRL
Cucumis sativus L. · Cucumber
Krylov Oleh Mykolaiovych, Borysov Oleksandr Volodymyrovych,
Solanum lycopersicum L. · Tomato
Mercier Jean-Claude
Solanum lycopersicum L. · Tomato
Stryl`nyk Halyna Vasylivna, Horkutsenko Oleksandr Vasyl`ovych, Shotyk Mykola Vasyl`ovych,
Solanum lycopersicum L. · Tomato
Sylvain Bontems
Solanum lycopersicum L. · Tomato
Sylvain Bontems
Solanum lycopersicum L. · Tomato
Morev Viktor Vasyl`ovych, Havrysh Serhii Fedorovych, Amchelavs`ka Olena Valentynivna,
Solanum lycopersicum L. · Tomato
Hari Besels
Solanum lycopersicum L. · Tomato
Herrit Vlaar, Lakusta Vasyl` Samsonovych,
Glycine max (L.) Merr. · Soybean
Euralis Semences
Glycine max (L.) Merr. · Soybean
Euralis Semences
Glycine max (L.) Merr. · Soybean
BETRIX CLAUDE-ALAIN
Solanum lycopersicum L. · Tomato
Sylvain Bontems
Solanum lycopersicum L. · Tomato
Sylvasn Bontems
Solanum lycopersicum L. var. lycopersicum · Tomato
VINATORU COSTELZAMFIR BIANCABRATU CAMELIA
Solanum lycopersicum L. var. lycopersicum · Tomato
NIRIT SEEDS
Solanum lycopersicum L. · Tomato
INTERSEMILLAS SAU
Glycine max (L.) Merr. · Soybean
Patrice Jeanson
Solanum lycopersicum L. · Tomato
J. Hoogstarten
Solanum lycopersicum L. · Tomato
Jaap Hoogstraten
Solanum lycopersicum L. · Tomato
Sylvain Bontems
Solanum lycopersicum L. · Tomato
Mercier Jean-Claude