Abstract
Garden rose popularity has been increased in Korea. However, the commercial demand has not reached out the development of domestic cultivar, and mainly imported cultivars are dominating the domestic market. In this work, mutant garden rose has been developed by using γ-ray irradiation. Rose ‘Love’ and ‘Rosanna’ cultivars were irradiated till 70Gy of γ-ray irradiation, and mutated into the form of flower color and shape. For three years, mutants for flower color and shape were selected and isolated into individual plantlets. Rose ‘Love’ with red flower color allowed five outstanding mutants focusing on various flower color and petal number. Rose ‘Rosanna’ also produced five excellent mutants with various flower color, shape, size and petal number.
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