Variety traits
Helianthus annuus L.
An important morphometric indicator that determines productivity and harvesting efficiency, measured as the distance from the soil surface to the point of capitulum attachment.
In the reference 1 147 varieties crop Sunflower, where this is mentioned in the description.
According to state variety testing protocols, measurements are taken before harvest on a representative sample of plants. Height is defined as the distance from the soil surface to the point where the capitulum attaches; less frequently, it is measured to the center of the face of the capitulum.
The range of variability for the species is extremely wide: from 60 cm in dwarf lines to 5–6 meters in ornamental forms, while commercial early-maturing hybrids typically vary between 164–175 cm. This trait is highly dependent on genotype, plant density, water availability, and soil fertility.
Plant height directly affects the efficiency of mechanical harvesting: excessive height or bending of the stem near the capitulum can lead to yield losses. Although tall plants often form a higher potential yield, they require significant resources and may be less stable under adverse conditions.
General information about the subject — on the page Plant height.
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.
Helianthus annuus L. · Sunflower
Rustica Prograin Genetique
Helianthus annuus L. · Sunflower
RUSTICA (FR)
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
Pioneer Overseas Corporation, USA
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcg
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcq
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcq
Helianthus annuus L. · Sunflower
VRANCEANU ALEXANDRU VIORELVOINESCU GHEORGHEPACUREANU JOITA MARIASTANCIU DANILSTANCIU MARIA
Helianthus annuus L. · Sunflower
Institute of Field & Vegetable Crops (RS)
Helianthus annuus L. · Sunflower
HOEFT ERIC
Helianthus annuus L. · Sunflower
SYNGENTA SEEDS A.G.
Helianthus annuus L. · Sunflower
prof.Nina Nenova
Helianthus annuus L. · Sunflower
CECOSA
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
MAS SEEDS
Helianthus annuus L. · Sunflower
Interstate Seed Co.
Helianthus annuus L. · Sunflower
Frederic Poujaud
Helianthus annuus L. · Sunflower
DEKALB AGR. RESEARCH INC.
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Helianthus annuus L. · Sunflower
Dekalb Genetics Corporation
Helianthus annuus L. · Sunflower
GIE Sockalb (FR)
Helianthus annuus L. · Sunflower
Tseve Krasteva Velkova, Galin Georgiev Georgiev,
Helianthus annuus L. · Sunflower
MEUNIER JOEL
Helianthus annuus L. · Sunflower
Yanul` Viktor, Nicolae Parvu,