площадь листа
As objects of research were used plants of winter rye at the time of flowering samples collected from nursery trials control scientific research Institute of agriculture of the South-East: district grade – Talovskaya 41, Radon, Snezana, Bezenchukskaya 87, Memory Kunakbaeva, Chulpan 7, Roxana; Saratov (scientific research Institute of agriculture of the South-East) – Elishaevskaj, Volzhanka, Saratov 7, Marusen’ka, Memory Babicheva, Sunshine. The length of the leaf blade and vagina and the leaf blade area were determined.