Articles
Accumulation of secondary metabolites in apple fruit depends on orchard planting and management technologies
Article number
1329_17
Pages
141 – 148
Language
English
Abstract
Impact of orchard management technologies on apple fruit internal quality was tested in several trials performed at the Institute of Horticulture, Lithuanian Research Center for Agriculture and Forestry during 2010-2019. Studies were focused mainly on the research of bioactive compounds: triterpenes and phenols.
Studies included rootstocks, crop load regulation, planting distances, fruit position in the tree crown, geographical locations, regulation of tree vegetative growth by root pruning, trunk incision and prohexadione-calcium. Auksis apple fruits on P 67 rootstock and Ligol on P 61 and P 22 had the highest total phenol content, while the lowest total phenol content of both tested cultivars was recorded on M.9 and P 62 rootstocks.
Increasing crop load on the tree led to significant increase of phenols and triterpenes.
Higher fruit triterpene concentration was recorded on denser planted trees.
Root pruning increased accumulation of phenols, while by the application of prohexadione-calcium the accumulation of phenols decreased significantly.
Lower triterpene concentration was recorded when tree growth was controlled by trunk incision.
Fruits from the top of the tree accumulated significantly higher amount of phenolic compounds, whereas fruits inside the tree crown were characterized by the highest amount of triterpene compounds.
Colder climate during the vegetation and shorter vegetation period resulted in significantly higher accumulation of phenolic and triterpene compounds in apples grown in Estonia comparing to fruits grown in Poland.
New scientific results on the impact of modern technologies on the changes of internal fruit quality parameters could increase consumption of apples.
Studies included rootstocks, crop load regulation, planting distances, fruit position in the tree crown, geographical locations, regulation of tree vegetative growth by root pruning, trunk incision and prohexadione-calcium. Auksis apple fruits on P 67 rootstock and Ligol on P 61 and P 22 had the highest total phenol content, while the lowest total phenol content of both tested cultivars was recorded on M.9 and P 62 rootstocks.
Increasing crop load on the tree led to significant increase of phenols and triterpenes.
Higher fruit triterpene concentration was recorded on denser planted trees.
Root pruning increased accumulation of phenols, while by the application of prohexadione-calcium the accumulation of phenols decreased significantly.
Lower triterpene concentration was recorded when tree growth was controlled by trunk incision.
Fruits from the top of the tree accumulated significantly higher amount of phenolic compounds, whereas fruits inside the tree crown were characterized by the highest amount of triterpene compounds.
Colder climate during the vegetation and shorter vegetation period resulted in significantly higher accumulation of phenolic and triterpene compounds in apples grown in Estonia comparing to fruits grown in Poland.
New scientific results on the impact of modern technologies on the changes of internal fruit quality parameters could increase consumption of apples.
Publication
Authors
D. Kviklys, J. Viškelis, M. Liaudanskas, N. Uselis, V. Janulis, J. Lanauskas
Keywords
bioactive compounds, triterpene, phenols, Malus × domestica, nutrition
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