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Biological characteristics of wild Cycas fairylakea population in Guangdong Province, China |
| JIAN Shuguang1, GAO Zezheng1, WEI Qiang1, XIE Zhenhua1, WU Mei1, REN Hai1, LIU Nian2 |
| 1.South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China; 2.Horticulture Department, Zhong Kai Agriculture Technique College, Guangzhou 510225, China; |
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Abstract There are five wild populations of Cycas fairylakea in Guangdong Province, China, three of which are newly found. A study of the biological characteristics of C. fairylakea populations showed that this species had a narrow colonization area within 300 hm2, and an island pattern of distribution. Because of the overexploitation, urbanization, environment pollution, plant diseases, and insect pests, the wild populations and individuals of C. fairylakea decreased markedly in the past decades. All five populations have an opposite pyramid age structure, few coning plants, few seed production, and low level of seed germination rate or sterility. In conclusion, C. fairylakea in Guangdong Province was threatened seriously and an urgent need to take effective efforts to protect the plants and habitats in its location sites was required.
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Issue Date: 05 December 2006
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