Magyar-Tábori, K., Dobránszky, J., Jámbor-Benczúr, E., Lazányi, J., Szalai, J., & Ferenczy, A. (2002). Effects of indole-3-butyric acid levels and activated charcoal on rooting of in vitro shoots of apple rootstocks. International Journal of Horticultural Science, 8(3-4), 25–28. https://doi.org/10.31421/IJHS/8/3-4/356
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Rooting responses of rootstocks cvs. JTE-F1, M. 26 and MM. 106 were studied to different concentration of IBA in root induction media and to presence of activated charcoal in root elongation media. High rooting rate (>90%) could be achieved in cvs. JTE-H and M. 26, while cv. MM. 106 showed weak rooting ability at each IBA level tested. Increasing IBA content depressed the rooting only in cv. M. 26. Presence of activated charcoal decreased considerable the rooting rate in cv. M. 26 and decreased the number of roots in cvs. JTE-H and M. 26. These cultivars developed longer roots on media containing activated charcoal, while cv. MM. 106 did not showed any reaction for it.