Determination of Fruit Growth in Some Apple Varieties

Bu calisma, Isparta (Egirdir) kosullarinda MM 106 anaci uzerine asili ve farkli tarihlerde hasat olgunluguna ulasanbazi elma cesitlerinde meyve gelisiminin incelenmesi amaciyla yapilmistir. MM 106 anaci uzerine asili Jerseymac,Galaxy Gala ve Braeburn elma cesitlerinde meyve buyume egrilerinin olusturulmasi icin cap degisimleri meyvelerinyaklasik 1 cm cap degerine ulastigi tarihten hasat tarihine kadar duzenli olarak olculmustur. Elde edilen sonuclaragore, tum cesitlerde meyve tutumundan hasada kadar meyvelerin surekli olarak tek sigmoid egri olusturacak sekildebuyudukleri belirlenmistir. Meyvelerin buyume ve gelisimi sirasinda ortalama meyve agirligi, suda cozunebilir toplamkuru madde miktari ve meyve suyunun pH degerinde artis, meyve eti sertligi ve titre edilebilir asitlikte ise azalmaoldugu tespit edilmistir (P 0.05).This study was carried out in order to examine the fruit development in some apple varieties which are grafted on MM106 rootstock and reach the harvesting maturity in various periods under Isparta (Egirdir) conditions. Changes indiameter of the fruits were regularly measured, beginning from the time when they reached about 1 cm diameter sizeuntil the harvesting time so that we could create fruit growth curves in Jerseymac, Galaxy Gala and Braeburn applevarieties that are grafted on MM 106 rootstock. All varieties grew with a regular single sigmoid curve from fruit settime to harvest. During grow and development periods average fruit weight, soluble solids content, pH value of thefruit juice increased, and fruit firmness, titratable acidity decreased. Moreover, it was found out that the values L and bdecreased while the value a increased during harvest times of the varieties when compared to the first samples takenright after the color broken (P 0.05 for other varieties).