Étude d’influence de deux espèces de portegreffes « Citrus Volkameriana et Citrange Carrizo » sur la reprise de greffage de deux variétés d’agrumes, l’Orange Washington Navel, et Clémentine Orograndé

Abstract

Among the most popular crops in Algeria, citrus cultivation occupies a very important place and constitutes a valuable economic interest. The varied use of several rootstocks can address expanded farmland exploitation problems, salt stress, water saving, improved affinities with graft varieties. Compatibility is one of the most important criteria in choosing the rootstocks. This study aims at investigating the compatibility and affinity by the follow-up of graft recovery rates of two graft varieties of citrus fruits (orange Washington Navel , Clémentine Orograndé) grafted – in shield – on two new rootstocks (Citrus Volkameriana , Citrange Carrizo).Our work is carried out in the nursey El-Nakhla . The comparison between the different associations gave us these results :  The multi –chapel greenhouse has an important role to ensure favorable environmental conditions such as humidity, when the grafting is chosen in winter.  The best association of point of view recovery time to grafting and development status is high is Citrus Volkameriana X Clémentine Orograandé , it is the combination between the most vigorous rootstock and the most vigorous variety . The result of our study seens to be a good choice for citrus nursery growers.