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. var. lycopersicum · Tomato
S.A.I.S. Societa Agricola Italiana Sementi
Solanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
Solanum lycopersicum L. · Tomato
Domaine Public (FR)
Solanum lycopersicum L. · Tomato
Ali Yuksel
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Solanum lycopersicum L. var. lycopersicum · Tomato
NIRIT SEEDS
Cucumis sativus L. · Cucumber
Yost van den Eiden
Solanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
Solanum lycopersicum L. · Tomato
HM Clause SA (FR)
Vicia faba L. · Broad bean
Semsearch B.V.
Solanum lycopersicum L. · Tomato
Kees Reinink
Solanum lycopersicum L. var. lycopersicum · Tomato
S.A.I.S. Societa Agricola Italiana Sementi
Solanum lycopersicum L. · Tomato
JAMES R.MYERS
Solanum lycopersicum L. · Tomato
TAKII & CO LTD
Solanum melongena L. · Eggplant
Marina Martínez López^^^Virginia Baraja Fonseca^^^Edgar García Fortea^^^María de la O Plazas Ávila^^^Santiago Vilanova Navarro^^^Jaime Prohens Tomás^^^Pietro Gramazio
Solanum melongena L. · Eggplant
Marina Martínez López^^^Virginia Baraja Fonseca^^^Edgar García Fortea^^^María de la O Plazas Ávila^^^Santiago Vilanova Navarro^^^Jaime Prohens Tomás^^^Pietro Gramazio
Solanum lycopersicum L. · Tomato
Vilmorin-Mikado S.A.S.
Vigna unguiculata (L.) Walp. · Cowpea
Ana Paula Rodiño Míguez^^^Antonio M. De Ron Pedreira
Solanum lycopersicum x Solanum pimpinellifolium · Tomato
Enza Zaden Beheer B.V.
Solanum lycopersicum L. · Tomato
NIRIT SEEDS
Cicer arietinum L. · Chickpea
Sichkar V'iacheslav Ivanovych, Bushulian Oleh Volodymyrovych, Vedysheva Rozetta Havrylivna,
Glycine max (L.) Merr. · Soybean
Erik Hahnon
Glycine max (L.) Merr. · Soybean
Patrice Jeanson
Glycine max (L.) Merr. · Soybean
Hanzhelo Olha Ivanivna, Lavrova Halyna Dmytrivna, Sichkar V'iacheslav Ivanovych,