FS 71539 — this is a sunflower hybrid developed by SYNGENTA CROP PROTECTION AG and included in the State Register of the Russian Federation for all sunflower cultivation regions. The plant is characterized by medium height at maturity, absence of branching, and leaf color ranging from green to dark green. Flowering time varies from early to medium, and ray flowers have a light-yellow hue. Seeds exhibit weakly expressed marginal and internal stripes, and leaf pubescence is at a medium level. The hybrid FS 71539 is distinguished by high adaptability and resistance to adverse conditions, making it suitable for cultivation in various climatic zones. It has a stable oil content of 50-53% and a yield potential up to 54 centners per hectare. Due to its high drought and heat tolerance, as well as resistance to downy mildew (A–G+), this sunflower is successfully grown in steppe, forest-steppe, and forest regions, ensuring a reliable and high-quality harvest. FS 71539 is a parental component of a sunflower hybrid and is intended for use in intensive agronomic practices. Its rapid growth in early development stages helps effectively utilize soil and reduces the risk of pest and disease damage. This hybrid is optimal for farmers aiming to achieve high productivity and quality of oilseed products under diverse cultivation conditions.