Distribution Status of Cuscuta spp. in Southern Parts of Korea and Germination Characteristics of C. pentagona
2007
Kim, C.S. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Moon, B.C. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Kuk, Y.I. (Chonnam National University, Gwangju, Republic of Korea), E-mail: [email protected] | Oh, S.M. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea)
Surveys were conducted to establish the current distribution pattern and host rage on four species of genus Cuscuta in southern parts of Korea. Cuscuta japonica. C. australis and C. chinensis were rare native species, but C. pentagona, exotic species, was widespread in natural habitats. In southern parts of Korea, C. pentagona has been recorded as a parasite on 127 herbaceous and woody plants. Soaking C. pentagona seeds in concentrated sulfuric acid was very effective on its germination. Seeds of C. pentagona germinated at constant temperature from 15 to 35℃ with optimum germination at 30 and 35℃, and at alternate temperature from 20/10℃. to 35/25℃ (day/night; 12/12hrs.) with optimum germination at 35/25℃. Seedlings of C. pentagona were emerge at soil gravimetric water content from 10 to 30% with optimum emergence at 20 and 30%. Seedlings of C. pentagona were able to emerge from depths as great as 6cm.
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