Study of the Root System of some Clonal Apple Rootstocks in Coastal Lowland Conditions


1 Department of Horticulture and Landscape Architecture, Agricultural University of Tirana, Tirana, Albania
2 ADAD, Tirana, Albania

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Several clonal apple rootstock (M9, Pajam 1, Pajam 2, Supporter Pi-80, MM106. MM111 and M26) were planted in Lushnja area, west of Albania in order to study their suitability  under specific soil and climate conditions of this region. The transplanting distanceswere 1.5 x 0.9 mm and each rootstock was represented by 10 plants. The analyses of root system was conducted by two different methods; the profile method with trenches and coring method. Based on their respective diameter, the roots were classified into three groups:<2mm, 2-4 mm, and > 4 mm. Based on the results of this study we conclude that the trench profiling and core drilling methods gave similar results regarding root system distribution. Under this specific environment conditions, Pajam 2, Pajam 1, Supporter and M9 demonstrated a more harmonious in depth and side distribution of the root system.Based on the number of shoots produced from each plant and their average diameter, Pajam2, Pajam 1 and Supporter seems to be the most convenient apple rootstokc for the conditions of Lushnja region.

 Keywords: root system; clonal rootstock; trench profile method; core drilling method; symbiosis.