| Abstract: | Influence of Variety, Location and Individually Defined Climatic Factors on the Tocopherol Content of Rapeseed Oil The total tocopherol content was determined in the material from different breeding lines, from field experiments (7 varieties from 3 German and 3 foreign locations) as well as from a phytotrone experiment in which the climatic conditions, such as temperature and day length, were varied. Genetic variations were detected predominantly in the breeding material which showed distinct differences between the breeding lines “low-erucic”, “low-glucosinolate” and “high-linoleic”. In the material obtained from field experiments, distinct differences were observed due to location, however, very little difference between the varieties was detected. Studies on the effect of climatic factors, such as temperature and day length, carried out in phytotrone experiments revealed that both of these factors affect the tocopherol content; higher temperatures and shorter periods of light (short day) increase the tocopherol content. |
