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Raw fibre and inulin content in roots of different scorzonera cultivars (Scorzonera hispanica L.) depending on cultivation method

Agnieszka Dolota, Barbara D±browska

Department of Vegetable and Medicinal Plants
Warsaw Agricultural University
Nowoursynowska 166, 02-787 Warsaw, Poland
e-mail: adolota@poczta.onet.pl

The study was conducted in the years 2002 and 2003. The object of analysis were the roots of seven scorzonera cultivars: ‘Einjährige Riesen’, ‘Meres’, ‘Prodola’, ‘Lange Jan’, ‘Maxima’, ‘Westlandia’, and ‘Duplex’ growing on ridge tillage and in flat tillage plots. The content of inuline and raw fibre fractions, i.e. acid detergent fibre (ADF), neutral detergent fibre (NDF) and acid detergent lignin (ADL) was analysed. The tillage method significantly affected the inulin content, which was most pronounced in ‘Meres’ and ‘Westlandia’. The inulin content in the roots of most scorzonera cultivars growing in flat tillage plots was significantly higher in both study years. The raw fibre content was affected by the tillage method and, probably, by the amount of precipitation in the second half of vegetation period. The highest content of this component was determined in ‘Prodola’ and ‘Meres’, depending on the year of study. Only the ADL content was significantly affected by the tillage method, whereas each assayed fraction content was significantly affected by a cultivar.

Dolota A., D±browska B., 2004. Raw fibre and inulin content in roots of different scorzonera cultivars (Scorzonera hispanica L.) depending on cultivation method. Folia Horticulturae 16/1: 31-37.