Alaa Ibrahim* (1), Najwa Ali(1), Aminah Issa(1), Abeer Habib(1) and Ghadah Ballol(1)
(1). Ciano station, Scientific Agricultural Research center of Latakia, GCAR, Syria.
(*Corresponding author: Dr. Alaa Suhiel Ibrahim, E-Mail: alaasoeb@gmail.com)
Received:12/12/2021 Accepted:25/04/2022
Abstract:
This investigation was carried out as a third phase from 2019 to 2021 in a field at the citrus experimental station in Ciano, the general corps of scientific agricultural researches. The yield of orange trees (Washington Navel 141) budded on seven citrus rootstocks (Sour orange, Troyer citrange, Carrizo citrange, Citrumelo 4475, Citrumelo 1452, Macrophylla and Cleopatra mandarin) and farmed in 1989 have been studied over 3 seasons. The results of studying the average yield for the three seasons showed that the trees grafted on Citrumelo 1452 (143.33 kg/ tree) were significantly superior to those grafted on Macrophylla, Citrumelo 4475 and Carrizo citrange (83.33, 100 and 101.67 kg/ tree respectively). There were no significant differences between the treatments regarding the average fresh weight of the fruit. Otherwise, the trees grafted on Citrumelo 4475 significantly outperformed the other treatments in the average fruit peel thickness (3.99 mm). The biggest TSS % was in trees grafted on Troyer and Carrizo citrange, Citrumelo 4475 (12.25, 12 and 11.92 % respectively) which were significantly superior to those grafted on Sour orang (10.83 %), while the greatest TA % was by Citrumelo 1452 and Sour orange (1.55 and 1.41 % respectively) which significantly outperformed Macrophylla and Cleopatra mandarin (1.11 and 1.26 % respectively).
Keywords: Orange, Navel, Rootstocks, Citrumelo, Cleopatra, Citrange.
Full paper in Arabic: pdf