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Assessment of somaclonal variation in Dieffenbachia plants regenerated through indirect shoot organogenesis

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The occurrence of somaclonal variation among regenerants derived through indirect shoot organogenesis from leaf explants of three Dieffenbachia cultivars Camouflage, Camille and Star Bright was evaluated. Three types of somaclonal variants (SV1, SV2, and SV3) were identified from regenerated plants of cv. Camouflage, one type from cv. Camille, but none from cv. Star Bright. The three variants had novel and distinct foliar variegation patterns compared to cv. Camouflage parental plants. Additionally, SV1 was taller with a larger canopy and longer leaves than parental plants and SV2. SV2 and SV3 did not produce basal shoots (single stem) but basal shoot numbers between SV1 and parental plants were similar ranging from three to four. The variant type identified from regenerated cv. Camille had lanceolate leaves compared to the oblong leaves of the parent. This variant type also grew taller and had a larger canopy than parental plants. The rates of somaclonal variation were up to 40.4% among regenerated cv. Camouflage plants and 2.6% for regenerated cv. Camille. The duration of callus culture had no effect on somaclonal variation rates of cv. Camouflage as the rates between plants regenerated from 8 months to 16 months of callus culture were similar. The phenotypes of the identified variants were stable as verified by their progenies after cutting propagation. This study demonstrated the potential for new cultivar development by selecting callus-derived somaclonal variants of Dieffenbachia.

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Correspondence to Xiuli Shen.

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Shen, X., Chen, J., Kane, M.E. et al. Assessment of somaclonal variation in Dieffenbachia plants regenerated through indirect shoot organogenesis. Plant Cell Tiss Organ Cult 91, 21–27 (2007). https://doi.org/10.1007/s11240-007-9273-9

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  • Dieffenbachia
  • Organogenesis
  • Somaclonal variation