基于形态和分子证据的大花忍冬复合群的种间关系

doi:10.7677/ynzwyj201413094

摘要/Abstract

摘要：

大花忍冬复合群主要分布在中国南部及周边地区，是忍冬属的主要疑难类群之一，包含大花忍冬、灰毡毛忍冬、细毡毛忍冬、菰腺忍冬和锈毛忍冬5种。该复合群是中国南部金银花的重要野生替代资源。本研究通过形态和生境观察、叶表皮微形态扫描和分子系统学分析相结合的方法，探讨了大花忍冬复合群的种间关系。结果表明，分子系统学方法没有解决该复合群之间的关系，仅灰毡毛忍冬的区分较为明显，基于形态学证据大致可将大花忍冬复合群分为以下3小群：菰腺忍冬以其独有的蘑菇状腺体与其他4种显著不同，毛被长度也明显长于其他种类；锈毛忍冬与大花忍冬的毛被较稀疏，但锈毛忍冬的花冠筒较短，气孔特征独特；灰毡毛忍冬与细毡毛忍冬的叶背密覆柔毛，二者的上表皮角质膜结构有差异。该复合群的物种形成和传播机制仍待深入研究。

关键词: 忍冬属, 复合群, 叶表皮, 分子系统学, 分类

Abstract:

Being one of the most complicated groups in Lonicera (Caprifoliaceae) and distributed mainly in southern China, the Lonicera macrantha complex comprises five species, ie. Lmacrantha, Lmacranthoides, Lsimilis, Lhypoglauca and Lferruginea. The complex is also found to be the main substitute of Ljaponica for Jin Yin Hua in southern China. To clarify the relationships within the complex, investigation of morphology and habitat of each species, observation of microfeatures of leaf epidermis, and molecular phylogenetic analysis were carried out. The results show that only L. macranthoides can be easily distinguished by phylogenetic methods, and that the complex can be roughly divided into three groups based on morphological characters: Lhypoglauca is distinct in its mushroomshaped glands and long trichomes on leaf epidermis; Lferruginea is close to Lmacrantha in the thin trichomes, but they differ in length of corolla tube and stomatal structure; Lmacranthoides is morphologically similar to Lsimilis in the dense trichomes, but they can be distinguished by characters of cuticular membrane. Further studies on resolving the speciation and species dispersal within the complex are still needed.

Key words: Lonicera, Species complex, Epidermis, Molecular phylogeny, Taxonomy

中图分类号:

Q 949

董洪进, 彭华. 基于形态和分子证据的大花忍冬复合群的种间关系[J]. Plant Diversity, 2014, 36(02): 133-141.

DONG Hong-Jin, PENG Hua. Relationships within the Lonicera macrantha Complex Based on Morphological and Molecular Data[J]. Plant Diversity, 2014, 36(02): 133-141.

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No.TaxaLocalityVoucher1-4Lonicera hypoglaucaLonglin, GuangxiDong HJ. & Yin ZJ. 2115-8LhypoglaucaNanchuang, ChongqingDong HJ. & Tang Y. 2849-10LhypoglaucaLonglin, GuangxiDong HJ. & Yin ZJ. 21011-15LhypoglaucaLechang, GuangdongDong HJ. & Yin ZJ. 18016-17LhypoglaucaQuanzhou, GuangxiDong HJ. & Yin ZJ. 20518-21LhypoglaucaRenhua, GuangdongDong HJ. & Yin ZJ. 16822-25LhypoglaucaDayu, JiangxiDong HJ. & Yin ZJ. 15426-27LhypoglaucaChengbu, HunanDong HJ. & Yin ZJ. 18428-29LhypoglaucaChengbu, HunanDong HJ. & Yin ZJ. 18530-31LhypoglaucaLichuang, HubeiDong HJ. & Tang Y. 25932LhypoglaucaJiangkou, GuizhouDong HJ. et al. 93133-35LsimilisEmei, SichuanDong HJ. & Tang Y. 334A36-39LsimilisLichuang, HubeiDong HJ. & Tang Y. 25840-42LsimilisHefeng, HubeiDong HJ. & Tang Y. 28343LsimilisYuanmou, YunnanFang W. 1115344-46LsimilisYuanmou, YunnanXiang CL. et al. 50347-48LsimilisWuding, YunnanXiang CL. et al. 51149-52L. similisJiangkou, GuizhouDong HJ. et al. 65453-56LmacranthaQuanzhou, GuangxiDong HJ. & Yin ZJ. 20457-60LmacranthoidesLechang, GuangdongDong HJ. & Yin ZJ. 17861-64LmacranthoidesQuanzhou, GuangxiDong HJ. & Yin ZJ. 20665-68LferrugineaJingdong, YunnanDong HJ. et al. 83769-72LpampaniniiLechang, GuangdongDong HJ. & Yin ZJ. 17773-77LconfusaGuilin, GuangxiShen XL. sn.78LcalcurataXundian, YunnanDong HJ. et al. 84179LnubiumEmei, SichuanDong HJ. & Tang Y. 334B80LjaponicaTianmushan, ZhejiangDong HJ. & Yin ZJ. 042

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