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植物研究 ›› 2016, Vol. 36 ›› Issue (4): 491-502.doi: 10.7525/j.issn.1673-5102.2016.04.003

• 研究报告 • 上一篇    下一篇

中国小檗科5属植物种子形态研究

张建茹, 曾妮, 常朝阳   

  1. 西北农林科技大学生命科学学院, 杨陵 712100
  • 收稿日期:2016-03-05 出版日期:2016-07-15 发布日期:2016-06-15
  • 通讯作者: 常朝阳,E-mail:czybbg@nwsuaf.edu.cn E-mail:czybbg@nwsuaf.edu.cn
  • 作者简介:张建茹(1988-),女,硕士研究生,主要从事植物分类学研究。
  • 基金资助:
    国家自然科学基金(30870155)资助

Seed Morphology of Five Genera of Berberidaceae in China

ZHANG Jian-Ru, ZENG Ni, CHANG Zhao-Yang   

  1. College of Life Sciences, Northwest A & F University, Yangling 712100
  • Received:2016-03-05 Online:2016-07-15 Published:2016-06-15
  • Supported by:
    Natural Science Foundation of China(30870155)

摘要: 利用解剖镜和扫描电镜对小檗科5属(小檗属、十大功劳属、鬼臼属、山荷叶属和红毛七属)40种2变种植物种子形态进行观察。研究结果表明:小檗科植物种子颜色多为黄褐色、红棕色至黑色,形状多样;种皮纹饰可分为网纹型、网纹-梯纹型、梯纹型和嚼烂状4种类型,其中网纹型又可划分为7个亚型。种子球形、种脐位于种子侧面近中部可作为红毛七区别于其他属种子的重要形态特征。根据种皮微形态特征,探讨了种子形态在小檗科内的系统学意义,并推测了种皮纹饰的可能演化路线。种子形态支持小檗属和十大功劳属的近缘关系,认为鬼臼属(八角莲属)较山荷叶属分化更早,但不支持Ahrendt对小檗属下组和亚组的划分。

关键词: 小檗科, 种子形态, 种皮纹饰, 分类

Abstract: The seed morphology of 42 taxa(40 species and 2 varieties) in 5 genera(Berberis, Mahonia, Caulophyllum, Dysosma and Diphylleia) of Berberidaceae from China was studied by stereoscope and scanning electron microscope. The study seeds were tawny, reddish brown to black, and diverse in shape. Ornamentation of seed coat was ascribed into four types as reticular(including 7 subtypes), reticular-scalariform, scalariform and ruminate. Seeds of Caulophyllum robustum were sphere and the hilum located on the side of seed near middle, which could be the typical characters distinguished from the other 4 genera. According to the micromorphology of seed coat, systematic and phylogenetic implications of seed coat morphology in Berberidaceae were discussed, and the possible evolutionary route of seed coat ornamentation was conjectured. Seed morphology supported the sister relationship between Berberis and Mahonia, and Dysosma was more original than Diphylleia. Seed morphology of the genus Berberis did not support Ahrendt's treatment of some sections and subsections.

Key words: Berberidaceae, seed morphology, ornamentation of seed coat, taxonomy

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