Genetic diversity of Iranian jujube (Ziziphus jujuba Mill.) ecotypes from Isfahan Region based on fruit physiochemical characteristics
2018
Jalaie-Esfandabadi, G. | Asadi-Gharneh, H. A.
Jujube (Ziziphus jujuba Mill.) fruit is an important endemic and medicinal plant in Iran. Jujube fruits are rich in vitamin C and mineral nutrients. This study was undertaken to evaluate the fruit physiochemical characteristics (fruit length, fruit width, fruit weight, humidity percent, flesh weight, flesh/stone ratio, stone weight, stone length, stone width, total acidity (TA), total soluble solid (TSS), ascorbic acid and flavonoid contents). Therefore, twelve different ecotypes of jujube were collected from Isfahan region. The highest mean value of fruit length, fruit width, fruit weight, humidity percent, flesh weight, flesh/stone ratio, stone weight, stone length and stone width were 32.36 mm, 21.68 mm, 7 g, 87.11%, 6.61 g, 19.15, 0.39 g, 18.46 mm and 7.45 mm, respectively. The highest level of total acidity content was observed in Mahabad ecotype (1.38%) and the highest level of total soluble solids content was observed in Poodeh ecotype (39.6% Brix). In terms of ascorbic acid and flavonoids, the highest level of ascorbic acid content was measured in Zavvareh ecotype (403.62 mg 100 g-1) and the highest level of flavonoids content was measured in 'Ganje-Ghobad' ecotype (250.12 mg 100 g-1 FW). The results of fruit physiochemical characteristics demonstrated that there are significant differences between ecotypes of different regions. This result was corroborated by cluster analysis. Therefore it can be concluded that there is a high physiochemical diversity in Iranian jujube ecotypes which can be a rich source for breeding programs.
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