Articles
THE EFFECT OF CUTTING POSITION, WOUNDING AND IBA ON THE ROOTING OF LEUCOSPERMUM ‘SUCCESSION II’ STEM CUTTINGS
Article number
602_19
Pages
133 – 140
Language
English
Abstract
Basal and terminal cuttings are used for the vegetative propagation of Leucospermum.
Leucospermum `Succession II ´ (L. cordifolioum x L. lineare) is relatively easy to propagate from terminal cuttings, but no data have been reported using basal cuttings.
To study the effect of wounding (two shallow and opposite incisions) and IBA treatments (0, 2000, 4000 ppm) on the rooting process, a trial was carried out in which terminal and basal cuttings were rooted with bottom heat (22 ± 2° C) under microjet irrigation.
Satisfactory rooting from the commercial point of view (95%) was obtained at 8 weeks from planting when wounded terminal cuttings were treated with 4000 ppm IBA. At the end of the experiment at 20 weeks, the highest percentage of rooting in basal cuttings (45 %) was obtained when using wounded cuttings treated with 2000 ppm of IBA. On wounded cuttings two ranks of callus nodules appeared along the edges of each incision. Roots emerged associated with the ranks of callus nodules, and they also emerged through the bark in unwounded areas between the incisions.
Leucospermum `Succession II ´ (L. cordifolioum x L. lineare) is relatively easy to propagate from terminal cuttings, but no data have been reported using basal cuttings.
To study the effect of wounding (two shallow and opposite incisions) and IBA treatments (0, 2000, 4000 ppm) on the rooting process, a trial was carried out in which terminal and basal cuttings were rooted with bottom heat (22 ± 2° C) under microjet irrigation.
Satisfactory rooting from the commercial point of view (95%) was obtained at 8 weeks from planting when wounded terminal cuttings were treated with 4000 ppm IBA. At the end of the experiment at 20 weeks, the highest percentage of rooting in basal cuttings (45 %) was obtained when using wounded cuttings treated with 2000 ppm of IBA. On wounded cuttings two ranks of callus nodules appeared along the edges of each incision. Roots emerged associated with the ranks of callus nodules, and they also emerged through the bark in unwounded areas between the incisions.
Publication
Authors
J.A. Rodríguez-Pérez, M.C. Vera-Batista, A.M. de León-Hernández
Keywords
Proteaceae, protea, propagation, terminal cuttings, basal cuttings, hormonal concentration
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