ISHS Acta Horticulturae 522: XXV International Horticultural Congress, Part 12: Application of Biotechnology and Molecular Biology and Breeding - General Breeding, Breeding and Evaluation of Temperate Zone Fruits for the Tropics and the Subtropics.
A PRELIMINARY STUDY ON THE EFFECTS OF SIX CLONAL ROOTSTOCKS ON GROWTH CHARACTERISRICS AND MINERAL COMPOSITION OF THE LEAVES OF FOUR IRANIAN COMMERCIAL APPLE (Malus domestica Borkh) CULTIVARS |
| Authors: | A. Talaie, A. Ershadi, M. Mostafavi |
| Abstract:
In this experiment the effects of six clonal rootstocks M9, B9, M26, M27, MM106 and MM111 on the growth characteristics and mineral composition (N, P, K, Mg, Mn, Zn and Fe) of the leaves of four commercial apple cultivars Golab kohanz, Shatiabadi, Red delicious and Golden smoothy (the first two cultivars are Iranian local ones while all are grown as commercial cultivars) were studied within a two years period. Rootstocks had significant effects on all growth characteristics. Trees on MM111 and MM106 rootstocks had highest trunk diameter, hight, shoot growth in current season and canopy development. Trees on M27 and B9 rootstocks had low growth characteristics and the rates on M26 and M9 rootstocks were in between of these two groups. These two later rootstocks showed a relatively high growth level particularly with Iranian local cultivars, Golab kohanz and Shafiabadi. Generally the rootstocks did not have similar growth effects on all cultivars and interactions of rootstocks and cultivars were observed. Cultivars, in addition to the rootstocks, had significant effects on N, Mg and Fe concentrations of leaves. Shafiabadi cv. had highest N concentration. Golden smoothy and Red delicious cultivars had higher Mg concentrations than Golab kohanz and Shafiabadi. The highest rate of Fe concentration was found in the leaves of Golab kohanz. Rootstocks showed significant effects on N, K, Mg and Mn concentrations of the leaves. Trees on M9 and MM106 had the highest N concentrations, while the lowest concentration was found with M27. Except for M27, studied rootstocks did not show significant differences in N concentration. The highest K was found in trees on M9 and MM106. Trees on M27 and M26 had the highest Mg and Mn respectively, and the lowest Mg and Mn was found with trees on MM111 rootstocks. Among measured elements rootstocks showed the most effect on Mn concentration and its concentration changed strongly along with the change of rootstock. | |
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