The influence of agroecological cultivating conditions on oil content of seeds of sunflower hybrid of different origin

On the basis of agro-ecological researches, covering the major soil-climatic zones of the Krasnodar region, the variability of oil content of seeds of sunflower hybrid of different origin was studied. It is shown, that the major part of the variability of the trait “oil content” in the factorial structure of “hybrid × density × area × year” influences polytypic character of hybrids (52 %), and agrocenosis density (24 %) has the biggest impact of the environmental factors taken into account. Also, the specificity of the structure of factorial variability of each hybrid is shown.