目的：探讨不同DNA提取方法对石斛属DNA质量及分子标记结果的影响。
Objective: To explore the quality of DNA with three methods of DNA extraction and the influence on RAPD-PCR.
主要研究成果如下：1初步探清了广西雅长兰科自然保护区内石斛属植物的分布情况及濒危原因。
The main results are summarized as the following: 1 It was made clear that how Dendrobium plants distributes in Yachang Guangxi and the factors endangering the species basically.
石豆兰属植物由于近年来同科石斛属植物的过度采挖，而作为名贵中药石斛类药材使用。为了解其化学成分及能否替代石斛，对石豆兰属植物的化学成分及药理活性研究进展进行了综述。
Plants of the genus Bulbophyllum are used or substituted as Dendrobium, a famous and precious traditional Chinese herb which was short of resource as grown slowly and over collected in recent years.
石豆兰属植物由于近年来同科石斛属植物的过度采挖，而作为名贵中药石斛类药材使用。为了解其化学成分及能否替代石斛，对石豆兰属植物的化学成分及药理活性研究进展进行了综述。
Plants of the genus Bulbophyllum are used or substituted as Dendrobium, a famous and precious traditional Chinese herb which was short of resource as grown slowly and over collected in recent years.
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