DEVELOPING NEW CORDYLINES VIA INTERSPECIFIC HYBRIDISATION OF THE AUSTRALIAN NATIVE CORDYLINE STRICTA WITH THE NEW ZEALAND NATIVES C. AUSTRALIS AND THE CULTIVAR 'RED FOUNTAIN' (C. HYBRID)
Cordyline species from New Zealand, particularly C. australis and its hybrids are popular ornamental plants in temperate regions. Red Fountain which is a hybrid involving three New Zealand species, C. banksii, C. australis and C. pumilo, is a very successful interspecific hybrid. However the use of Cordyline species and cultivars may be limited by factors such as plant form, disease resistance, cold and heat tolerance. An Australian native, C. stricta was chosen for its putative heat tolerance and genetic potential for creation of new forms of Cordyline. Two hybrid plants were produced from the cross C. stricta × C. australis and three hybrid plants were achieved from the cross Red Fountain × C. stricta. Leaf descriptions for parents and their hybrids are provided. Inter-Primer Binding Site (iPBS) DNA molecular markers were applied to confirm the true hybrid nature of these five interspecific hybrids. This marker system was also chosen to test its efficacy for this purpose. Primer 2394 indicated that hybrid DNA bands came from both putative parents. This is the first report for interspecific hybrids achieved between New Zealand and Australian Cordyline species.
Luo, S., Goikoetxea Arango, A., Mehmood, A., Ahmad, N.M. and Brown, G. (2015). DEVELOPING NEW CORDYLINES VIA INTERSPECIFIC HYBRIDISATION OF THE AUSTRALIAN NATIVE CORDYLINE STRICTA WITH THE NEW ZEALAND NATIVES C. AUSTRALIS AND THE CULTIVAR 'RED FOUNTAIN' (C. HYBRID). Acta Hortic. 1097, 205-212
plant breeding, iPBS DNA markers, hybrid authentication, heat tolerance, shade