【摘 要】
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Seed plants are composed of angiosperms and gymnosperms, which diverged from each other around 300 Mya.The success of angiosperms divergence has been attributed in part to innovations associated with
【机 构】
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Nanjing Forestry University, 210037 Nanjing, China
【出 处】
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全国农业生物化学与分子生物学第十四届学术研讨会
论文部分内容阅读
Seed plants are composed of angiosperms and gymnosperms, which diverged from each other around 300 Mya.The success of angiosperms divergence has been attributed in part to innovations associated with genes or whole-genome duplications, while the relationships within gyrrnosperms that are undergoing a slower evolutionary rate still remain ambiguous.Cycads,conifers, Ginkgo and gnetales are the four extent gymnosperm groups.Ginkgo biloba is the sole living member of the Ginkgoalean clade, dating back to Jurassic times.Apparently, G.biloba is one of the oldest of living plants demonstrated by fossil records which has persisted unchanged over such a long time.The maidenhair tree originated in China and was widely exported worldwide due to its beauty and high tolerance of pollution and completely resistant to almost all pests and diseases.
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