Akademik Veri Yönetim Sistemi
Alatarım, cilt.20, sa.1, ss.12-21, 2021 (Hakemli Dergi)
In this study, physical and chemical changes during fruit development of pollination constant astringent
‘Eylül’ persimmon genotype and ‘Hachiya’ persimmon variety were examined and optimum harvest time was
determined under Dörtyol-Hatay conditions that have a Mediterranean climate. Fruit samples were taken
from persimmon trees from grafted onto Diospyros lotus rootstock. Fruit weight, width and length, flesh
firmness, skin and flesh color, total soluble solids (TSS) and titratable acidity (TA) content, pH value and
TSS/TA ratio were analyzed on samples from June to ripening. Fruit samples were picked up at fortnight
interval in the time of fruit development. Fruit weight of ‘Eylül’ persimmon genotype and ‘Hachiya’
persimmon variety were reached 96.35 g and 259.84 g, respectively, on 215th day after full bloom (DAFB).
Flesh firmness was reduced in the time of fruit growth and achieved to an acceptable limit, while h° values of
fruit skin color was decreased in the time of the fruit growth period. Our data shown that fruit skin color
especially hº value, fruit flesh firmness, TSS and TSS/TA ratio were significant criteria in determining
harvest maturity. Optimal harvest maturity period lay between 155‒170th DAFB for ‘Eylül’ persimmon
genotype and between 170‒185th DAFB for ‘Hachiya’ persimmon variety in Dörtyol-Hatay conditions.
According to the obtained findings, it was determined that ‘Eylül’ persimmon genotype reach optimal
maturity between the second or the third weeks of October and mid or end of October were the optimum
harvest maturity time for ‘Hachiya’ persimmon variety in order to provide storage long time and transport
fruit at optimum commercial maturity and quality