Abstract
The influence of the mineral composition and acidity of media, saccharose level, brand and quantity of agar onin vitro shoot rooting of P 60 and P 2 apple and quince S 1 root-stocks were compared. Among the tested salt compositions (full WMP and 1/2 WMP, full MS and 1/2 MS) the most suitable for rooting was composition of WMP. Further modifications in quantity of nitrogen, H3BO3 CaCl2 and MgSO4 of WMP medium did not have a positive effect on rooting. 30 g l−1 saccharose gave better results than 20 g l−1. Acidity of WMP medium tested in a pH range of 4.0 to 6.5 did not affect rooting of P 60 rootstock but media adjusted to pH 4.5 and 5.0 were better for rooting of recalcitrant P 2 rootstock. Among 4 agar brands (Difco Bacto, Oxoid No.1, Japanese commercial fibre and Japanese commercial powder) tested at 6 g l−1, the most effective was the last one, but its quantity had no effect in the range of 3 to 10 g l−1 for rooting of P 60 rootstock.
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Orlikowska, T. Effects of mineral composition and acidity of media, saccharose level, brand and quantity of agar on rooting of fruit rootstocksin vitro . Biol Plant 34, 45–52 (1992). https://doi.org/10.1007/BF02925789
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DOI: https://doi.org/10.1007/BF02925789