Occurrence of Chrysanthemum stunt viroid in Chrysanthemum in Korea |
Bong Nam Chung, Jin Hee Lim, Seong Youl Choi, Jeong Soo Kim, Eun Jung Lee |
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Abstract |
Infection rate of Chrysanthemum stunt viroid (CSVd) in 64 commercial chrysanthemum cultivars cultivated in Korea ranged from 9.7 to 66.8%. Symptoms on leaves of CSVd-infected chrysanthemum included yellow spots,chlorosis, vein clearing, vein bending and crumpling. CSVd induced flower malformation in ``Scot``, color change in ``Sharotte``, and color breaking in ``Sharon``. CSVd caused reduction of plant height, leaf size, flower size and the flowers number by 32-50%, 26-35%, 14- 36% and 14-75%, respectively. In conclusion, CSVd affected plant height, leaf size and flower quality in chrysanthemum plants. |
Key Words:
Chrysanthemum stunt viroid, Dendranthema grandiflorum, infection rate |
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