Influence of the growing degree-days on chemical and technological properties of chestnut fruits (var. ?￠????Judia?￠????)

摘要

The influence of different edaphoclimatic conditions in ?￠????Judia?￠???? variety from seven different localities in the Tr????s-os-Montes region was evaluated with respect to metabolites, fatty acids, and technological properties. Significant correlations between edaphoclimatic conditions and moisture content, crude protein and especially fatty acids were investigated. Alf???￠ndega da F????, with 2032 ???°D (degree-day), has the best corrected caliber and the lowest percentage of depth kernel wrinkles. However, the coldest localities (1597 ???°D and 1971 ???°D) had the highest moisture, crude protein, soluble sugars, and starch content and a clear prevalence of polyunsaturated fatty acids. The moisture loss of the chestnut fruits was also different among localities, which could lead to a different economic value. This study is important because it supplies the knowledge that trees from the same variety can produce different quality fruits depending on their origin of growth and the influence of different edaphoclimatic conditions.