Rooting of berberis and ligustrum cuttings from stock plants grown at selected light intensities
Knox, G.W.; Hamilton, D.F.
Scientia Horticulturae 16(1): 85-90
1981
ISSN/ISBN: 0304-4238
Accession: 006356731
Plants of B. thunbergii DC., B. thunbergii DC. 'Atropurpurea', L. obtusifolium Seibold and Zucc. var. regelianum (Koehne) Rehd., and L. .times. vicaryi Beckett were grown at 37, 53, 70 and 100% full sunlight to determine rootability of cuttings. Rooting hormone levels of 0, 1.0, 0.3 and 0.8% IBA in talc were applied to the cuttings, and percent rooting, root length, and fresh and dry weights were recorded. Optimum rooting of cuttings of Berberis resulted when stock plants were grown at 70% light, with 37% light being the next most successful. Optimum rooting of cuttings of L. obtusifolium var. regelianum resulted when stock plants were grown at 37% light. Rooting of L. .times. vicaryi did not respond to light intensity. An interaction between rooting hormone and light intensity was noted for root length of Ligustrum spp.