Physiological and genetic study of isogenic lines of spring soft wheat differing in color and spinous ear and having weak photoperiodic sensitivity

Wheat isogenic lines differing in the spinous and color of ear and having weak photoperiodic sensitivity were created. They are significantly more precocious than the original highly sensitive parent variety Leningradka (Leningrad oblast) and the Courier standard variety (Krasnodar krai) in conditions of both short and long natural photoperiod. The lines are not inferior in productivity to the parent variety Leningradka. Molecular genetic analysis reveals the presence of the dominant allele Ppd-D1a in the lines.