Effect of Some Citrus Rootstocks on Fruit Quality and Storability of Washington Navel Orange Under Cold Storage Conditions

Résumé fourni par la source

The present study was carried out during the two successive seasons of 2010 and 2011 to investigate the effect of volkameriana lemon and sour orange rootstocks on fruit quality and storability of Navel orange fruits under cold storage conditions. Generally, fruit weight loss (%), decay (%), TSS % and TSS/Acid ratio of fruits were increased with prolonging the period of cold storage. On the other hand, fruit peel and pulp firmness as well as titritable acidity decreased by increasing the period of cold storage. In general, fruits of Navel orange trees budded on sour orange rootstock was superior to those budded on volkameriana lemon rootstock concerning TSS%, Acidity% and vitamin C characteristics. In the same time, the fruits have the highest percentage of both weight loss and decay. On the other hand, fruits of orange trees budded on volkameriana lemon rootstock recorded the highest averages of peel, pulp firmness and TSS/Acid ratio parameters. most popular fruit crops among other citrus species in limited. Egypt, with an area of 158000 Feddan which represents Accordingly, this experiment was conducted to about 39.4 % of the total area of citrus in Egypt and elucidate the effect of two kinds of rootstocks on storage annual production of approximately 1634764 tons (1). In potential of Navel orange fruits under cold storage the Mediterranean region, all citrus cultivars are mainly conditions. budded on Sour orange, due to its resistance to gummosis fungi, high adaptability to wide range of soil conditions

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