Variety traits

Sunflower Heterosis

Helianthus annuus L.

Heterosis in sunflower is manifested in the superiority of first-generation hybrids over parental lines in productivity and oil content, providing an increase in achene yield of 15–20%.

In the reference 8 varieties crop Sunflower, where this is mentioned in the description.

The heterosis effect in sunflower is evaluated by comparing F1 hybrids with the best parental forms or standard varieties. A significant positive effect is most pronounced in achene yield, oil yield, 1000-seed weight, head fertility, and plant height parameters.

In breeding practice, the realization of heterosis is based on the use of a cytoplasmic male sterility system and fertility restorer lines. The level of trait expression directly depends on the genetic divergence of the parental inbred lines: the more they differ in origin and biological properties, the higher the productivity of the hybrid progeny in the first generation.

General information about the subject — on the page Heterosis.

Sources7

Varieties of Sunflower 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.