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THE COMPARISON OF ADAPTIVITY PARAMETERS OF SUNFLOWER VARIETIES OF THE BREEDING OF V.S. PUSTOVOIT ALL-RUSSIAN RESEARCH INSTITUTE OF OIL CROPS IN VARIOUS GROWING AREAS

We studied the environmental plasticity and stability of sunflower varieties Belochka and Skormas as an important stage in ecological variety trials. The data obtained during the research allow us to draw a conclusion on the response of crop varieties to various agro-climatic cultivation conditions by three points of the study. The studies carried out to compare the adaptability parameters of the sunflower varieties Belochka and Skormas at V.S. Pustovoit All-Russian Research Institute of Oil Crops (Krasnodar city district) – CES, the Armavir experimental station – AES (Armavir city district), Siberian experimental station – SES (Isilkul, the Omsk region) made it possible to establish that the studied sunflower varieties have sufficient plasticity by all test points. At the same time, we established that the variety Skormas at the CES and the variety Belochka at the AES had the highest yield stability.