Анализ на съдържание на масло и олеинова киселина в семената на междувидови хибриди слънчоглед.

Interspecific hybrid materials obtained from crosses between cultivated sunflower and some accessions of wild species of the genus Helianthus were studied. Samples of the annual wild species Helianthus annuus (w.f.), H. argophyllus and the perennial hexaploid species H.resinosus were used as paternal parents. In the crosses, five CMS lines, developed at DАI-General Toshevo, were used as the maternal parents. The embryo rescue method was applied to obtain hybrid seeds from the cross 830A x GT-M-046 (H. resinosus Small (2n=102). By applying the hybridization scheme “cultivated sunflower x wild species”, a sufficient amount of seeds were obtained for further morphological, phenological, biochemical and phytopathological studies of the hybrid progenies. The content of oil and oleic acid in the seeds was determined. Interspecific forms characterized with highest content of oil and oleic acid in the seeds were obtained from crosses 4499A x GT-E- 166, 4499A x GT-E-122, 830A x GT-E- 171, 4499A x GT-E-153, 3607A x GT-E- 046, 217A x GT-E-122 and 217A x GT-E- 126. The obtained hybrid materials can be successfully used as an initial breeding material to enrich the genetic plasma of cultivated sunflower and create high oleic lines and hybrids. [ABSTRACT FROM AUTHOR]