In Romania the most infested fields with Orobanche cumana are situated in South-Eastern part of the country especially in Buzau, Tulcea and Constanta county. Our study assesses the influence of Orobanche attack on sunflower oil quality. We have used two sunflower hybrids MAS95 IR and MASS 83R from Maisadour provenance in a field experience through randomized blocks design. The location was on the Casimcei plateau, in vicinity of Sarighiol de Deal, Tulcea county. There were no mechanical or hand hoeing, not applied herbicides or any other insecticide and fungicide treatments in sunflower vegetation period. In September twenty five of sunflower heads were harvested from each hibrid, samples from parasitized sunflower plants and non- parasitized by broomrape respectively. The sunflower oils have been obtained by chemical extraction. The fatty acid profiles were analyzed by GC-MS. The results have revealed that the linoleic acid is the prevalent fatty acid in seeds. Sunflower plants parasitized with broomrape were not affected from point of view of palmitic and stearic acid contents, but in case of oleic and linolenic acids are noted increases of contents. The differences are variable depending on genotype profiles of plants.

sunflower oil yield, broomrape attack, linolenic acid, oleic acid

Presentation: oral