LG5638

Genetic Architecture of the LG5638 Hybrid

The French breeding program of Limagrain has focused the LG5638 model on the balance between physiological resilience and biochemical productivity. The technical potential of this sunflower is unlocked through a combination of stable morphology and high oil content, ranging from 50% to 55%. This makes it more than just an oilseed crop; it is an efficient tool for agronomists aiming for maximum profitability.

Phytosanitary Barrier: Pathogen Resistance

The key feature of the LG5638 is its specialization in defending against a complex of soil-borne and airborne infections. In conditions of high humidity or crop rotation saturated with sunflowers, the plant demonstrates critical resistance to:

• White and Ashy Stem Blight (Sclerotinia and Macrophomina): The hybrid's genetic markers block mycelial development during the early and mid-growth stages.
• Phomopsis and Phoma: The dense epidermal structure of the stalk and leaves prevents spore penetration, which is vital for preventing premature wilting and lodging.

These parameters allow for a reduction in fungicide application, as the hybrid possesses a built-in immunity against the primary destroyers of the flower head and root system.

Agronomic Profile of the Crop

With a plant height of 160-170 cm, this hybrid is optimally adapted for mechanical harvesting. The flattened shape of the medium-sized head ensures uniform seed maturation across the entire area, minimizing losses during threshing. The moderate plant habit avoids excessive vegetative mass, reallocating metabolic resources efficiently toward seed fill and oil accumulation.