Possibility of developing sunflower hybrids with different oil quality
2006
Skoric, D., Naucni institut za ratarstvo i povrtarstvo, Novi Sad (Serbia) | Jocic, S., Naucni institut za ratarstvo i povrtarstvo, Novi Sad (Serbia) | Lecic, N., Naucni institut za ratarstvo i povrtarstvo, Novi Sad (Serbia) | Sakac, Z., Naucni institut za ratarstvo i povrtarstvo, Novi Sad (Serbia)
The existence of genes for a high oleic acid content (Ol-genes) has made it possible to develop high-oleic sunflower hybrid (Olivko). There are also sunflower genotypes with high levels of linoleic, palmitic, and stearic acids, which makes possible the development of hybrids with different oil quality. Genes have been discovered for different tocopherol content and type based on spontaneous mutations within sunflower populations. The genes tph1 (50% alpha + 50% beta), tph2 (0-5% alpha + 95-100% gamma) and tph1tph2 (8-40% alpha + 0-25% beta + 25-84% gamma + 8-10% delta) enable the development of hybrids with different tocopherol contents and types. The incorporation of the gene Ol+tph1 into these genotypes has led to the development of high-oleic hybrids with altered tocopherol profiles. Oil of these hybrids can be sustained for much longer than standard sunflower oil can. The process of incorporating the genes Ol+tph2 and Ol+tph1tph2 into highly productive sunflower genotypes is under way. The most important products of this line of research are the newly developed female lines the oil of which has an oleic acid content of over 90% and the male lines (restorers) with an oleic acid content in the 89-93% range. Using these lines, hybrids will be developed whose oil is going to have an oleic acid content of over 90%.
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