ISHS Acta Horticulturae 620: XXVI International Horticultural Congress: Asian Plants with Unique Horticultural Potential: Genetic Resources, Cultural Practices, and Utilization
GENETIC RESOURCES FOR NEW CULTIVAR BREEDING OF SELECTED ASIAN ORNAMENTALS |
| Authors: | K.-K. Shim, Y.-M. Ha |
| Keywords: | Korean native plants, Pyrus calleryana, Sorbus alnifolia, Hibiscus syriacus, Corylopsis coreana, Forsythia koreana, Crataegus pinnatifida, Cornus kousa. |
| Abstract:
F1 hybrids with red leaves were selected from progenies of crossing P. calleryana var. fauriei with P. pyrifolia cv. 'Ohara beni'. Out of 92 F1 red leaf seedlings, only 14 had purple leaves. Their morphological characteristics of red leaf color were inherited from the mother plants. These selections with red leaves originating from Korean native P. calleryana var. fauriei are also regarded as valuable genetic resources for new variety breeding. Korean native Sorbus alnifolia collected from its habitats showed genetic variation such as larger leaves and flowers than those of typical species. Hibiscus syriacus, the national flower of South Korea, has been widely planted in the country for a long time, and so there are many valuable genetic resources. A native 100-year old tree, 'Andong', is deciduous, multiple stemmed, dwarf shrub with a height of 120 cm and a stem width of 65 cm. Therefore, 'Andong' can be utilized as a genetic resource for new breeding. Clones of Korean native Corylopsis coreana came from several habitats, and displayed diverse genetic variations in fragrance, leaf color, maturing, and autumn foliage color. Korean indigenous Forsythia koreana has been widely planted in the country for many years and therefore has various genetic resources such as gold foliage color and larger flower size than those of native species. Therefore, Korean native plants offer a wide range of valuable genetic traits that can be utilized in developing new and desirable cultivars of ornamental trees. | |
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