In this thesis, we investigated the quantity and quality of roots of an available parsnip (Pastinaca sativa) cultivar. The experiment was carried out at the experimental field site of the Biotechnical Faculty in Ljubljana in 2021. Two old varieties, 'Bielas' and 'Halblanger', and a hybrid cultivar 'Palace F1' were used. Direct sowing was carried out on 19 April 2021 and the growing period of all three cultivars was 192 days. During the survey, we found that the 'Palace F1' cultivars performed best in terms of the number of roots produced, the number of marketable roots, the division of roots into quality classes and the marketable division of roots into quality classes. When measuring the weight of individual roots, the cultivar 'Halblanger' performed slightly better than the cultivar 'Palace F1', but the uniformity of roots was better in the cultivar variety. The 'Halblanger' cultivar also performed better in the measurements of root length and diameter, but there were greater variations or differences between individual roots. Nevertheless, the cultivar 'Palace F1' remained the most evenly matched. For the diameter of the stem, it is preferable to keep the diameter as small as possible, which was measured for the 'Palace F1' cultivar. No major or significant differences were observed between the varieties with regard to root colour. The colour difference measured by calorimeter between 'Bielas' and 'Halbanger' (1,17) and 'Bielas' and 'Palace F1' (2,22) is different, indicating that the roots differ in the colour measured. The only difference in phloem and rhizome colouration was found in the cultivar 'Bielas'. All three varieties were found to have taproots with a slender shape, with all the lower parts of the roots being sharpened. The cultivar 'Palace F1' and 'Halblanger' were found to have a concave root head, while 'Bielas' has a flat root head. In terms of yield, 'Palace F1' was the best cultivar, followed by 'Halblanger' and in third place by 'Bielas'.
|
