The Sonata soybean variety is an early or early-maturing Glycine max (L.) Merr. crop suitable for cultivation in various regions of Russia, including the Middle Volga, Eastern Siberia, and the Far East. The plant features a semi-spreading or semi-compact form with indeterminate or determinate growth habit, medium height, and pubescence ranging from reddish-brown to gray. Leaves are green; leaflets can be oval or lanceolate; flowers vary from purple to white. Pods are light or dark brown; seeds are yellow, spherical-flattened with a yellow hilum. The mass of 1000 seeds ranges from 117.2 to 185.6 grams, indicating the variety's large seed size. The vegetative period is approximately 108 days, ensuring early harvest. Seed yield varies by region and growing conditions: in the Middle Volga region, it reaches 12.6-17.9 c/ha; in the Far East, from 8.3 to 27.5 c/ha; in some zones of the Khabarovsk Territory, maximum yields reach up to 24.5 c/ha. Additionally, dry matter yield in the Middle Volga region can reach 41.8 c/ha. The variety is characterized by high protein content (37.8% to 40.4%) and fat content (about 20.6-20.9%), making it valuable for food and feed industries. Sonata exhibits resistance to ascohitoz, along with weak susceptibility to septoria and bacterial blight; it is also resistant to lodging and shattering, contributing to harvest stability and reduced losses during storage. The variety was developed using hybridization followed by multiple rounds of individual selection, ensuring high quality and adaptability to various climatic conditions.
