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http://dx.doi.org/10.7235/hort.2014.14074

Development of a New Coreopsis Variety 'Uridream Pink' by Gamma-ray Irradiation  

Park, Kong-Young (Uriseed Company)
Hwang, Hyeon-Jeong (Department of Horticultural Biotechnology, Kyung Hee University)
Chae, Won-Byoung (Vegetable Research Division, National Institute of Horticultural & Herbal Science)
Choi, Geun-Won (Department of Horticultural Biotechnology, Kyung Hee University)
Publication Information
Horticultural Science & Technology / v.32, no.6, 2014 , pp. 906-911 More about this Journal
Abstract
A new coreopsis cultivar, 'Uridream Pink', was developed by mutation breeding using gamma-ray irradiation. Rooted cuttings of 'Uridream 01', developed at Uriseed Company, were exposed to various gray ranges of gamma-rays from a $^{60}CO$ source for 24 h in 2009 at the Korea Atomic Energy Research Institute. Using gamma-rays with the range of 10-100 Gy, a chimeric mutant with pastel pink flowers was induced at 30 Gy from 'Uridream 01', which blooms red-purple flowers (Red-purple group, 59A). Clones that produced flowers with modified pink color were separated from the chimeric mutant and fixed by more than three rounds of cutting back from 2009 to 2010. The separated mutant clones with modified pink color were found to bloom flowers with marketable color and be free of any abnormal plant characteristics. The typical color of the flowers was pastel pink (Red-purple group, 67B), and the clones were registered as 'Uridream Pink' at the Korea Seed and Variety Service (plant variety protection number: 4410). Although the size of flowers and leaves of 'Uridream Pink' are smaller than those of 'Uridream 01', the number of flowers per plant is greater. 'Uridream Pink' can be used as both a pot and a garden plant because of its long blooming period from late spring to late autumn.
Keywords
artificial mutation; Coreopsis rosea Nutt.; cutting propagation; irradiation breeding; selection;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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