The effect of farming system and cultivars on the yield, morphometric characteristics and chemical composition of carrot (Daucus carota L.)

N. Šink, M. Mikulič Petkovšek, N. Kacjan‑Maršić
Vegetable quality is characterized by sensory parameters and chemical composition of metabolites which often depends on the genotype, environmental factors and the methods of cultivation. The aim of the study was to evaluate some morphometric characteristics and chemical composition of the yield of three carrot cultivars grown in organic and integrated farming system, and on unfertilized control plots. The carrot yield from organic system was higher with all tested cultivars compared to the yield from the integrated system, but the differences between them were not statistically significant. Farming system significantly influenced some morphological traits of carrot plants: the height and the weight of the above part plants as well as the characteristics of the carrot roots (mass, length, xylem and floem diameter). Among the metabolites, carrot roots from the organic farming system had significantly higher total organic acids and vitamin C content at all tested cultivars compared to the integrated system and the control plots. Of the organic acids, malic, pyruvic, citric and fumaric acid were detected and all of them were influenced significantly by the cultivars. Of the secondary metabolites, the chlorogenic acids was detected as the major phenolic compound, ferulic acid derivative was the second prevailing, followed by 5-p-coumaroylquinic acid and 5-feruloylquinic acid as the minor. Total phenolic acids concentration was higher in organically cultivated carrots than in the integrated system, but the differences were not statistically significant. Farming system and genotype significantly influenced also the content of carotenoids, which resulted in significantly higher α- and β-carotene content in the roots from the organic and integrated systems, but the differences between them were not statistically significant. Among cultivars the higher carotenoids content was detected in the roots of ‘Rodelika’ and ‘Rolanka’ compared to the roots of ‘Fanal’.
Šink, N., Mikulič Petkovšek, M. and Kacjan‑Maršić, N. (2021). The effect of farming system and cultivars on the yield, morphometric characteristics and chemical composition of carrot (Daucus carota L.). Acta Hortic. 1326, 33-42
DOI: 10.17660/ActaHortic.2021.1326.5
https://doi.org/10.17660/ActaHortic.2021.1326.5
organic farming system, integrated farming system, carrot (Daucus carota L.), primary metabolites, phenolic acids, carotenoids
English

Acta Horticulturae