10.07.2015 Views

Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Figure 1. The aspect of apples from Generos cultivarafter storageThis variant shows reduced mass loss andrecorded spoiling due to disease attack. Thetotal losses are recorded by Golden Deliciouscultivar (24.20%) that both weight loss andspoiling is the highest (Figure 2)During cold storage the cultivars studiedshowed a different degree of pulp consistency,varying between 3.71 kgf/cm² (V4) and 4.82kgf/cm² (V2).Average value of the 5 variants was 4.13kgf/cm², surpassed by the Golden Deliciouscultivar (4.82 kgf/cm²).During storage, the fruit firmness decreased inall variants in different ratios, ranging from3.93 kgf/cm² on an average of 3.66 kgf/cm²,value with 7.4% less than the original.Fruits which remained firmed are related to: V3(Idared), V1 (Jonathan) and V5 (Generos) onwhich firmness decreased from 3.68-5.85%.Firmness showed the largest decrease in variantV2 (Golden Delicious) were registereddrastically firmness decreased from 37.15%,respectively to 26.76%.Influence of drip irrigation on chemical andphysical characteristics to applesResults on the evolution of the main chemicalcomponents during storage are presented intable 4.Table 4. Principal chemical components of apples duringand after storageFigure 2. The total losses recorded at studied varietiesInfluence of drip irrigation on fruit firmnessResults regarding the fruits firmness(penetrometer determined) during storage arepresented in Table 3Table 3. Firmness of apples during storage and afterstoragePenetration value (kgf/cm²)VariantOn After ReductionCultivarinsertion keeping % V1 Jonathan 3.93 3.73 5.09V2 Golden 4.82 3.53 26.76V3 Idared 4.08 3.93 3.68V4 Florina 3.71 3.23 12.94V5 Generos 4.10 3.86 5.85Average - 4.13 3.66 10.86CultivarDry SolubleSubstance(%)Titratableacidity (%)(malic acid)Totalcarbohydrates(%)Ascorbicacid(mg/100g)initial final initial final initial final initial finalJonathan 13.4 13.5 0.50 0.42 11.26 10.29 9.45 7.66Golden 11.8 12.2 0.39 0.32 9.90 9.00 9.18 7.35Idared 11.8 13.0 0.60 0.53 9.60 8.59 6.70 5.41Florina 12.8 13.1 0.59 0.41 10.66 9.88 9.65 7.68Generos 13.3 13.9 0.65 0.56 11.05 10.47 9.06 7.22Average 12.62 13.14 0.55 0.45 10.50 9.65 8.81 7.06Differences +5.20 -17.0 -8.70 -16.4(%)Initial dry substance content at theexperimental variants was between 11.8 and13.4%, with an average of 12.62%, Jonathancultivar and Generos cultivar with the highestvalues and the lowest at the Golden Deliciousand Idared cultivar. During cold storage thecontent of dry substance increased in allvariants reaching on average of 13.14%. Theaverage increase recorded was 5.20%. Theinitial acidity of the fruit (expressed in malicacid /100g) ranged from 0.39-0.65%, with anaverage of 0.55%. The lowest acidity wasrecorded by Golden Delicious cultivar andhighest by Generos and Idared cultivars.During cold storage fruit acidity decreased inall variants on average with 17.0%.101

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!