The walnut is classified as a strategic species for human nutrition and is included in the FAO’s priority list of plants. Walnut, (Juglans regia L.), propagation is more difficult compared to most fruit species. Due to walnut heterozygosity, propagation by seeds does not lead to full inheritance of all the characteristics of a certain variety. This is the reason why many efforts are being in improving the propagation technologies worldwide. The purpose of this experiment was to increase the success of inoculation of the walnut budding var. Franquete. Methods such as the patch budding and chip budding have been employed during the experiment. To establish the most appropriate season of inoculation, summer budding on 28 June (with buds taken in the current season), autumn budding on 28 August (with buds taken in the current season) and spring budding on 28 May (with buds collected from the winter dormant period), were tested. As rootstocks for June and August budding, the seedlings of Juglans regia L. of the current year have been employed. For the spring budding, the one year old scions have been used. Patch budding resulted to be the most successful method for walnuts. However, the success of the method of patch budding depends very much on the season of inoculation. An 80% of successful inoculation was achieved by June budding (on 28 June). Furthermore, cutting off the leaf 20 days before the buds were taken for budding, led to even higher results reaching an 87% of successful inoculation. According to the results of the present study, the June budding of the patch method seems to be the best solution for the production of grafted young walnut trees.
Online ISSN: 1459-0263Year: 2014, Vol. 12, Issue 2, pages 1350-1352.Publisher: WFL.
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