Evaluación de tres tipos de injerto de nuez (Juglans regia L.) en cuatro progenies de nogal (Juglans neotrópica Diels.) en la estación experimental Tunshi.

Abstract

This research aims to evaluate three types of grafting of walnut (Juglans regia L.)in four progenies of walnut tree (Juglans neotropica Diels) in the experimental station Tunshi. The grafting was done by applying three types of graft: terminal scion, lateral scion, and omega type graft, by using grafting plants propagated and identified as walnut tree from seeds collected in Riobamba, Guamote, Alausí and Pallatanga, likewise the grafted material identified as walnut was obtained from mother plants in production and it presented wellformed buds and about sprouting. Beds were made under level to facilitate the work of irrigation. The grafting was carried out after having made distribution of the progenies, and the type of graft with a complete randomized design obtaining 12 treatments with 5 replicates and 60 experimental units. After performing the grafting variables to be evaluated as the number of buds, days until the appearance of the first leaves, shoot length, number of leaves, diameter of the rootstock, diameter of the graft variables to be and percentage of budding were considered. By carrying out the analysis of variance and by finding significant differences among the variables of study the Tukey test at 5% was carried out for the separation of averages. It is concluded that the Riobamba progeny with lateral and terminal scion graft type was the most efficient type of graft to produce walnut with the best agronomic characteristics. It is recommended to carry out grafts of lateral and terminal scion type since they presented better results in the growth and budding, and to consider the cold hours to which the rods of grafting were subjected.