Selection of a new group of miniature dahlias (Dahlia pinnata)
2000
Vaclavik, J. (Vyzkumny Ustav Silva Taroucy pro Krajinu a Okrasne Zahradnictvi, Pruhonice (Czech Republic))
Breeding of 13 miniature dahlias of a new type from vegetative propagation was terminated in 1999. Plants are 400-500 mm high and 500-700 mm in width, they are coming into flower early and produce exuberant flowers for a long time. Pompon flower heads 40-60 mm in diameter are self-cleaning and their fading is not visible on plants. Both tubers and young plants are suitable for bedding and pot plantings. Cultivars with yellow color were produced by mutation after irradiation with gamma-rays of radioisotope Co 60. When tested for the tomato spotted wilt virus by DAS-ELISA, the irradiated materials had a high proportion of plants with increased values of absorbance, especially in the first year after irradiation. It is not possible to reliably identify the presence of the quarantine virus of tomato spotted wilt in these materials.
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