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    Comparison of Biochemical Parameters and Volatile Compounds of Some Hybrid Tomato Varieties
    (ANKARA UNIV, FAC AGR, 2017) Kara, Meryem; Sahin, Huseyin; Dinc, Saliha; Yildiz, Oktay; Can, Zehra; Er, Fatih
    Evaluating morphological and quality parameters such as shape, colour, size and yield are all common practices when assessing the quality of fruit and vegetables. In recent times, however, consumer interest in foods with high levels of bioactive components, high mineral content and acceptable flavor has increased considerably. In order to make a contribution to the production of fruit and vegetables with excellent morphological properties and high levels of bioactive compounds, two different hybrid tomato varieties (Ege F1 and Alida F1) cultivated in Turkey were compared in terms of their biochemical parameters (phenolic compounds, ascorbic acid, ss-carotene, lycopene, minerals) and volatiles. While the Alida F1 was rated the highest for lycopene and mineral values, the Ege F1 was outstanding in terms of phenolic compounds and volatiles. Ascorbic acid content of both cultivars ranged from 7.13 to 11.94 mg 100 g(-1) fw. The quantity in the Ege hybrid was remarkable. Chlorogenic acid, caffeic acid, p-coumaric acid, rutin and trans ferulic acid were the main phenolic compounds in both cultivars. Potassium (K) (4.09%) was the most predominant mineral in both hybrid tomatoes. Hexenal had the highest concentration value among tested volatiles followed by 2-hexenal, (6-methyl)-trans-5-Hepten-2-one. Comparison of biochemical parameters and volatiles of both varieties will give breeders an opportunity to choose the desired traits of tomatoes to cultivate for both taste and nutritional value.
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    THE ROOTSTOCK EFFECTS ON AGRONOMIC AND BIOCHEMICAL QUALITY PROPERTIES OF MELON UNDER WATER STRESS
    (PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2018) Dinç, Saliha; Kara, Meryem; Karipcin, M. Zeki; Sarı, Nebahat; Can, Zehra; Çiçekci, Hacer; Akkuş, Mehmet
    In this study Edali F1 and Balhan Fl melons (Cucumis melo L.) grafted onto different rootstocks (TZ 148 and Jumbo) under water stress conditions (W1-100%, W2-50%, W3-25%). FRAP (Ferric reducing antioxidant power) values increased with the use of TZ 148 and Jumbo rootstocks. At water stress, grafting generally increased ascorbic acid values. Maximum beta-carotene amount was stated for Balhan Fl with W3 level and the beta-carotene values of Balhan/TZ148 melons increased with water stress. p-hydroxybenzoic acid was the compound with the highest quantity among the tested phenolic compounds. Citric, maleic, fumaric and formic acid quantities increased with enhancement of water deficiency whereas tartaric, succinic and acetic acid decreased. Fructose and saccharose quantity decreased as the amount of water given to plant decreased but glucose level was not affected. Consequently, grafting of melons onto favorable rootstocks seems to enhance the amount of health related compounds under water stress conditions.