Wachstumsverlauf und Ertrag verschiedener Smallanthus sonchifolius Genotypen

The tuberous root plant yacon (Smallanthus sonchifolius) is native to the Andean region. It produces eatable roots, which contain roughly 70 % carbohydrates in dry matter. Nearly all of them are fructooligosaccharides (FOS), which are not digested by the human intestinal tract and do not cause an increase of the blood glucose level (Lachman et al. 2003). In order to identify the potential of yacon for temperate climates two yacon genotypes were investigated in a field trial located in South-West Germany. In this field trial the focus was set on tuber yield and plant development. The results of 2015 showed significant differences in tuber yield of a red (3.3 kg per plant) and a brown genotype (2.5 kg per plant). A revers picture has been found for the aboveground biomass. The brown genotype formed significantly more leafs, while plant height of the red genotype was significantly higher at harvest. No significant differences were determined between the numbers of tuberous roots per plant