Abstract
Four chrysanthemum cultivars were generated through (carbon) ion-beam irradiation of the original ‘Jimba’ (Chrysanthemum morifolium Ramat.). The new cultivars had acquired a number of superior cultivation traits, while remaining identical to the commercially available ‘Jimba’ in appearance. In this study, polymerase chain reaction (PCR) assays were used to detect the mutated region of each strain, thereby allowing clear identification at the molecular level. PCR assays were performed with 446 primer sets, including random amplified polymorphic DNA (RAPD) primer sets (10-mer RAPD), arbitrarily primed (AP)-PCR primers based on retrotransposon-like sequences and modified RAPD primers (15-mer RAPD). 15-mer RAPD primers generated a 1.49-fold increased band number at high annealing temperatures compared with the original 10-mer RAPD primers and could thus be effective for detection of polymorphic patterns. Our results provide information on the mutated regions of these ion-beam-irradiated chrysanthemum cultivars. Thus, specific DNA markers could be used to improve identification of new cultivars of chrysanthemum as well as other clonal cultivars of horticultural and agricultural crops.
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Acknowledgments
This work was supported by Grants-in-Aid for Research and Development Projects for Application in Promoting New Policy of the Ministry of Agriculture, Forestry and Fisheries of Japan (No. 1970).
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Shirao, T., Ueno, Ki., Abe, T. et al. Development of DNA markers for identifying chrysanthemum cultivars generated by ion-beam irradiation. Mol Breeding 31, 729–735 (2013). https://doi.org/10.1007/s11032-012-9808-6
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DOI: https://doi.org/10.1007/s11032-012-9808-6