caa a22 4500 463236416 CHVBK 20180405153258.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s11240-007-9234-3 doi (NATIONALLICENCE)springer-10.1007/s11240-007-9234-3 Bushiness and cytokinin profile in dormant and sprouting tubers of Zantedeschia [Elektronische Daten] [S. D'Arth, S. Simpson, J. Seelye, P. Jameson] The commercial Zantedeschia industry faces a potentially serious problem with the cultivar Florex Gold periodically producing weak, poor performing "bushy” plants in their second growing season. As these plants are derived from tissue culture, it had been suggested that the use of cytokinin during the tissue culture process might be a causative factor. Endogenous cytokinin concentration and profile in dormant and sprouting Zantedeschia tuber eyes (buds) of the cultivars Florex Gold (prone to bushiness) and Best Gold (not prone to bushiness) were determined by high-performance liquid chromatography and radioimmunoassay. During sprouting the total cytokinin concentration in Florex Gold tuber eyes rose tenfold, with a 40-fold increase in the nucleotides. No role for endogenous cytokinin concentration or profile in the expression of the bushy syndrome was established, as there were no measurable differences between bushy and control Florex Gold samples, whether dormant or sprouting. However, sprouting tuber eyes from the cultivar Florex Gold had nearly twofold more cytokinin than sprouting eyes from the cultivar Best Gold, which may in some way predispose Florex Gold to bushiness. Springer Science+Business Media B.V., 2007 Bushy nationallicence Multiple shoots nationallicence Reduced apical dominance nationallicence Tissue culture nationallicence Dormancy nationallicence D'Arth S. Institute of Molecular BioSciences, Massey University, Private Bag, 11222, Palmerston North, New Zealand aut Simpson S. Multiflora Laboratories Limited, P.O. Box 9516, Newmarket, Auckland, New Zealand aut Seelye J. New Zealand Institute for Crop & Food Research Limited, Private Bag 11600, Palmerston North, New Zealand aut Jameson P. Institute of Molecular BioSciences, Massey University, Private Bag, 11222, Palmerston North, New Zealand aut Plant Cell, Tissue and Organ Culture Kluwer Academic Publishers 89/2-3(2007-05-01), 185-191 0167-6857 89:2-3<185 2007 89 11240 https://doi.org/10.1007/s11240-007-9234-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11240-007-9234-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- D'Arth S. Institute of Molecular BioSciences, Massey University, Private Bag, 11222, Palmerston North, New Zealand aut NATIONALLICENCE 700 1- Simpson S. Multiflora Laboratories Limited, P.O. Box 9516, Newmarket, Auckland, New Zealand aut NATIONALLICENCE 700 1- Seelye J. New Zealand Institute for Crop & Food Research Limited, Private Bag 11600, Palmerston North, New Zealand aut NATIONALLICENCE 700 1- Jameson P. Institute of Molecular BioSciences, Massey University, Private Bag, 11222, Palmerston North, New Zealand aut NATIONALLICENCE 773 0- Plant Cell, Tissue and Organ Culture Kluwer Academic Publishers 89/2-3(2007-05-01), 185-191 0167-6857 89:2-3<185 2007 89 11240 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer