Alterations in Selected Pomological and Biochemical Characteristics of Fruits from Certain Pear Genotypes Under Changing Climatic Conditions

Authors : Neziha Özgün, Yasemin Evrenosoğlu

Pages : 53-60

Doi:10.53471/bahce.1638754

View : 78 | Download : 58

Publication Date : 2025-05-27

Article Type : Research Paper

Abstract :Under prevailing environmental conditions, stressors such as drought and climate change have emerged as significant factors impacting agricultural productivity and crop quality. To investigate this phenomenon, ten distinct pear genotypes were classified into astringent (A) and non-astringent (N) categories based on their inherent astringency levels. Pomological and biochemical characteristics of the genotypes were systematically analyzed. A comparative statistical analysis was performed on mean values of pomological traits (fruit width, length, weight, upper/lower surface coloration, firmness), peel color parameters (L*, a*, b*, chroma [C*], hue angle [°h]), soluble solid content (SSC), pH, titratable acidity (TA), vitamin C concentration, total phenolic content, and antioxidant capacity between the two groups. Genotypes exhibiting elevated a* values in lower peel coloration and higher L*, b*, and °h values in upper peel coloration were categorized as non-astringent (N). Conversely, genotypes with increased °h values in lower peel coloration and elevated a* values in upper peel coloration were classified as astringent (A). Biochemical analyses revealed significantly higher SSC in astringent genotypes, whereas non-astringent genotypes demonstrated greater pH levels. Mean TA and vitamin C concentrations were statistically higher in astringent genotypes compared to non-astringent counterparts. However, total phenolic content and antioxidant capacity showed no statistically significant intergroup differences.
Keywords : Armut, Genotip, Stres Faktörleri, Pyrus communis

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