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.
Glycine max (L.) Merr. · Soybean
SOYA NORTH CO LTD
Solanum lycopersicum L. · Tomato
NIRIT SEEDS
Solanum lycopersicum L. · Tomato
Vilmorin, F
Cucumis sativus L. · Cucumber
Monsanto Vegetable IP Management B.V.
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum lycopersicum L. · Tomato
Vilmorin, F
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Solanum lycopersicum L. · Tomato
Bayer Holland B.V.
Cucurbita maxima Duchesne · Giant pumpkin
Pieterpik B.V.
Solanum lycopersicum L. · Tomato
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum lycopersicum L. · Tomato
HEINZSEED
Solanum lycopersicum L. · Tomato
Bayer Holland B.V.
Phaseolus vulgaris L. · Common bean
SVS, NL
Solanum lycopersicum L. · Tomato
WESTERN SEED ESPAÑA, S.A.
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GmbH & Co.KG
Cucumis sativus L. · Cucumber
Bejo Zaden, NL
Phaseolus vulgaris L. · Common bean
Syngenta Seeds, NL
Glycine max (L.) Merr. · Soybean
University of Manitoba (CA)
Capsicum annuum L. · Bell pepper
Wouter Lindeman
Glycine max (L.) Merr. · Soybean
Patrice Jeanson
Lupinus angustifolius L. · Narrow-leaf lupin
SAATZUCHT STEINACH GMBH and CO KG
Phaseolus vulgaris L. · Common bean
U S DEPT OF AGRICULTURE
Solanum lycopersicum L. · Tomato
Vilmorin, F