Development of the new maternal lines of sunflower with short tubular ray flowers as a marker trait

Usage of the morphological marker traits in seed growing of hybrid sunflower allow to reach high genetic purity of seeds, to reduce labour efforts for varietal field cleanings, to increase a level of protection of author’s rights for breeding achievements. In spite of a large amount of studied morphological marker traits of sunflower, the monogenic marker traits are the most desirable. The primary demand is absence of a dependence of phenotypic display of the genetic markers on crop management and environmental factors. One of such traits conditioned by the recessive gene ft is a trait of tubular ray flowers of sunflower. This trait was used as a marker one in our breeding program. The line VK 860 from the laboratory collection was used as a source of this trait. Using it we developed a group of the new lines. They are: very early maturing lines (Sli6 1702, Sli6 1703, Sli6 1737), period from the emergence to the beginning of flowering 45-48 days, and middle-early maturing lines (She 1704, Slie 1707, Sl6 1743) with a period of 55-60 days, being highly technological and having high seed productivity (1...