Dynamics of chemical components in annual onion cultivation under different irrigation regimes
DOI:
https://doi.org/10.61308/ETZO3899Keywords:
Allium cepa L.; dry matter; monosaccharides; disaccharides; cellulose; reduced irrigation; long-term storageAbstract
The influence of two irrigation regimes (optimal and 50% reduced) on the composition of chemical components in three onion varieties: with white, red and yellow coloring envelope flakes was studied. The change in the content of dry matter, моно- and disaccharides, and cellulose during storage was monitored. The values of dry matter were higher in the bulbs from the reduced irrigation regime throughout the storage period. The content of monosaccharides increased during the storage process. This was an indication of a gradual increase in the content of monosaccharides, regardless of the cultivation method. A decrease in the content of disaccharides after harvest was found in the varieties Konkurent biyal when grown in both irrigation variants and in Asenovgradska kaba 5 when grown with optimal irrigation. The content of cellulose increased at the end of the ninth month of storage. The increase was more expressed in the bulbs from the reduced irrigation variant. The results of the two-way analysis of variance showed a dominant influence of the genotype on the studied chemical components. No unidirectional and stable manifestation of the influence of the irrigation factor on the content of the studied chemical indicators during the storage process was observed.
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