REGENERATION POTENTIAL AND QUALITY OF REGENERANTS THROUGH ORGANOGENESIS OF PLUM AND CHERRY VARIETIES
DOI:
https://doi.org/10.51258/AAR.2025.7.27Keywords:
organogenesis, in vitro, cotyledon, plum, cherryAbstract
Screening for adventitious regeneration ability remains an important step when in vitro techniques are considered useful for clonal propagation or genetic improvement of fruit species. Studies conducted highlight the difficulties in regenerating shoots in vitro and emphasize the importance of selecting appropriate strategies for identifying and isolating transgenic cells. The investigation targeted the evaluation of direct or indirect regeneration ability from cotyledon explants of some plum and cherry cultivars and the assessment of the quality of regenerated plants (growth and vigor). Significant differences in the genetic potential for organogenesis from in vitro cultured immature cotyledons were found in both species. The overall results showed that the plum cotyledons, irrespective of culture medium and pretreatment are generally more responsive than the cherry cotyledons. The frequency of cotyledons forming shoots on the most adequate culture medium exceeded 50% in seven out of nine investigated plum cultivars. At cherry cultivars, frequency of shoot regeneration ranged from 8.3% at Van to 38.4% at Rivan. In case of cultivars which prove a low ability of shoot regeneration from their in vitro cultured immature cotyledons, wounding of cotyledons and the use of TDZ could allow higher frequencies of explants regenerating shoots, as well as a higher number of shoots formed per responsive cotyledons.Downloads
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