Regeneration of Pelargonium in vitro

• Published in: Acta Agrobotanica Vol. 56; no. 1-2; pp. 177 - 190
• Main Authors: Agnieszka Wojtania, Wiesław Szafrański
• Format: Journal Article
• Language: English
• Published: Polish Botanical Society 01.12.2013
• Subjects: in vitro; organogenesis; Pelargonium; somatic embryogenesis
• ISSN: 2300-357X
• DOI: 10.5586/aa.2003.017

Pelargonium sp. has been a subject of numerous studies to deterimine the effec tiveness of in vitro techniques to produce a large number of pathogen-free plants. Regeneration of pelargonium plants from the different initial explants as well via organogenesis as via somatic embryogenesis has been obtained. The most effective adventitious shoot formation has been achieved from shoot tips and axillary buds using cytokinin or cytokinin/auxin combinations. Leaf explants, whose general have lower organogenic potency, regenerate better in the presence of thidiazuron. This growth regulator stimulate the somatic embryos production from hypocotyl and cotyledone explants too. The main problem in tissue culture propagation of Pelargonium has been the high tendency to formation of vigorously growing callus with low organogenic potency and rapid senescence of cultures. Moreover, the significant differen ces in requirements to the medium composition (minerals, organic compounds and growth regulators) between Pelargonium cultivars has been observed. This makes difficult to develop an universaI method of Pelargonium micropropagation.