Variety traits

Determinacy — Faba bean

Vicia faba L.

A trait defining plant architecture in which stem growth terminates with the formation of an apical inflorescence. It is regulated by the Vf_TFL1 gene and ensures uniform pod maturation, which is essential for mechanized harvesting.

In the reference 9 varieties crop Broad bean, where this is mentioned in the description.

Normally, faba beans exhibit an indeterminate growth habit, regulated by the TERMINAL FLOWER1 (TFL1) gene, in which the apical meristem continuously forms new vegetative and reproductive organs. The determinate growth habit is characterized by the transformation of the apical meristem into a terminal inflorescence, which limits plant height and promotes more homogeneous bean maturation, preventing desiccation in the lower tiers while the upper tiers remain immature.

The trait is qualitative and heritable. In modern breeding, molecular markers are used for the precise diagnosis of the determinate phenotype (ti), in particular a specialized dCAPS marker based on a single nucleotide polymorphism in the Vf_TFL1 gene. The use of determinate cultivars allows for better adaptation of the crop to regions with short growing seasons and optimizes mechanized harvesting processes.

General information about the subject — on the page Determinacy.

Sources7

Varieties of Broad bean mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.