The spring soft wheat variety L 503 is a medium-maturing type created by the genetics department of the Southern East Research Institute of Agriculture. Plants of this variety have average height, reaching 85-110 cm, with an upright bush and a cylindrical white ear of medium density. The vegetative period lasts from 74 to 93 days, allowing the variety to mature simultaneously or slightly earlier than standard varieties such as Arkhat. L 503 is distinguished by high resistance to lodging, shattering, and grain germination, and contains genes providing protection against leaf rust and powdery mildew, making it a reliable choice for various cultivation zones. The L 503 variety is characterized by good drought resistance at the level of the standard and is capable of forming high-quality food grain not lower than the 3rd class. The mass of 1000 grains varies from 26 to 38 grams, the grain is red in color, egg-shaped with a long awn. The ear has awn-like appendages which are short, and the shoulder is slanted and narrow. The average yield of the variety in various regions ranges from 24.3 to 31.9 centners per hectare, while in some cases, for example in the Republic of Tatarstan, the yield reached 45.6 c/ha. The variety is recommended for cultivation in the Penza, Samara, and Orenburg regions and other regions of the Central Volga and Urals. L 503 belongs to valuable wheats with high baking qualities. Protein content in the grain reaches 18.5%, raw gluten - 28-36%, and gluten quality corresponds to I-II group. Flour strength varies from 320 to 517 units, calorimetric evaluation is 60-87 units, and grain naturalness reaches 840 g/l. The baking evaluation of the variety is in the range of 4.2-4.4 points, which confirms its commercial value and competitiveness in the market. The main advantages of the variety are the combination of high productivity potential with resistance to adverse factors and stable grain quality, which makes L 503 attractive to agricultural producers.
