Abstract
The tall, middle maturing soybean cultivar Jaguar with a trait of accelerated formation of aboveground biomass was obtained as a result of individual selection in F4 from the hybrid combination Vilana × D-7/10 by tall growth (> 150 cm) of the stem, large seeds, middle maturity and lodging resistance. Based on the results of variety testing in 2020–2023, the soybean cultivar Jaguar exceeded the standard cultivar Vilana by 0.26 t/ha of yield. With an average vegetative period of 123 days at the latitude of Krasnodar (45°), the height of plants of this cultivar is 138 cm, varying over the years from 120 to 154 cm. In optimal moisture conditions, the weight of 1000 seeds is 160–190 g. The phenomenon of accelerated formation of aboveground biomass of plants of the cultivar Jaguar y in optimal cultivation conditions is confirmed by a 44% more intense daily increase in plant height and a 55% more intense daily increase in aboveground biomass compared to these indicators for the standard cultivar Vilana. The new tall, middle maturing soybean variety Jaguar, with a trait of accelerated formation of aboveground biomass, is characterized by increased responsiveness to additional moisture by increasing the plant height to ultra-high, increasing the number of nodes, beans and seeds, seed size and weight, and yield. It has increased resistance of tall plants to tilting and lodging due to excessive moisture due to the increased mechanical strength of the stem. Due to its tall growth and high positive response to additional moisture supply, it is suitable for cultivation in the southern foothill and central zones of the Krasnodar region, with irrigation throughout the North Caucasus and Lower Volga regions of the Russian Federation, as well as in the republics of Central Asia and Transcaucasia.
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