Influence of proprietary rooting compounds and basal internode length on the rooting of potato stem cuttings |
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Authors: | H A Hepburn S Matthews |
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Institution: | (1) Department of Agriculture, University of Aberdeen, AB9 IUD Aberdeen, Scotland |
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Abstract: | Summary Potato stem cuttings, cv. Désitrée, were treated with a powder formulation of 4-indol-3-ylbutyric acid (IBA), a gel formulation
of 1-naphthylacetic acid (NAA), or a powder formulation of NAA. Both the IBA powder and the NAA gel stimulated significantly
more roots per rooted cutting than were produced by the untreated controls but the NAA gel also significantly reduced the
number of root branches per rooted cutting (Table 1).
Untreated cuttings of cvs. Désirée and Recond were more likely to form only roots when the basal internode was long and more
likely to form only tubers when the basal internode was short (Table 2). We suggest that the number of stem cuttings forming
roots would be increased if, where necessary, the cuttings were trimmed to leave a long basal internode. |
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Keywords: | Solanum tuberosum L 1-naphthylacetic acid 4-indol-3-ylbutyric acid tuber development |
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