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Zjawisko chimeryzmu związane jest z hodowlą chryzantemy wielkokwiatowej na drodze mutagenezy. Chimery, zwłaszcza sektorialne i meryklinalne, u których zmiana barwy pojawia się tylko na niewielkim obszarze całego kwiatostanu, są interesującym źródłem dotychczas traconej zmienności. Ze względu na lokalizację mutacji i mały obszar tkanek objętych mutacją w kwiatostanie, nie można stosować znanych metod...
The use of flower tissue for the in vitro propagation of chrysanthemum (Chrysanthemum 9 grandiflorum (Ramat.) Kitam.), an ornamental plant, provides a specific and precious explant type for organogenesis (regeneration of adventitious shoots/roots) or somatic embryogenesis. This is of great importance for the breeding of this species. In vitro culture of flower tissue can lead to the separation of...
Chryzantema, obok róży i gerbery, jest jedną z najpopularniejszych roślin ozdobnych na świecie. Chłonny rynek zbytu podlegający prawom mody nieustannie wykazuje zapotrzebowanie na nowe odmiany. Hodowcy podejmują wiele starań, aby zaspokoić wyrafinowane i często zmieniające się gusta klientów. Odmiany popularne w jednym roku są szybko zastępowane. Stąd też największym zainteresowaniem hodowców cieszą...
In mutation breeding of chrysanthemum the regeneration in vitro of adventitious shoots from ligulate florets can lead to the separation of chimera components and, as a result, to producing a new original cultivar. The success of that method considerably depends on the result being the number of the shoots formed. The more is produced, the greater the chances for an effective separation of chimera...
Many chrysanthemum mutants are chimeras built from tissues of a varied genetic composition. Regeneration in vitro of somatic embryos from the whole mutated ligulate florets or only from their small mutated fragments can lead to the separation of chimera components and, as a result, producing a new original cultivar. There was determined the effect of growth regulators (2,4-D; KIN or BAP) and explant...
Chrysanthemum mutants can be chimeras. The regeneration in vitro of adventitious shoots from ligulate florets can lead to the separation of chimera components, resulting in producing a new cultivar. There was determined the effect of various factors on the number and length of shoots regenerating in vitro from ligulate florets of Chrysanthemum × grandiflorum (Ramat.) Kitam. ‘Cool Time’. The ligulate...
Ajania is closely related to the chrysanthemum, and may become an interesting alternative for it, the more that the cultivation of both species can be carried out simultaneously. The present study investigated the efficiency of micropropagation of three cultivars of Ajania pacifica (Nakai) Bremer et Humphries: ‘Bea’, ‘Bess’, ‘Silver and Gold’. The plants were propagated in vitro with single-node method...
Induced mutagenesis allows to obtain in relatively short time new cultivars of chrysanthemum differing in single characteristic traits such as the colour or shape and size of inflorescence, which determines their decorative values. The traditional breeding methods as crossing, selection and techniques of genetic transformation face limitations in this species. The object of investigation were three...
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