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Plant Diversity ›› 2013, Vol. 35 ›› Issue (3): 265-272.DOI: 10.7677/ynzwyj201313065

• 研究论文 • 上一篇    下一篇


周卓1、2, 陈光富1、3, 张建文1, 牛洋1, 李志敏3, 孙航1   

  1. 1 中国科学院昆明植物研究所生物多样性与生物地理学重点实验室,云南 昆明650201;
    2 中国科学院大学,北京100049; 3 云南师范大学生命科学学院,云南 昆明650092
  • 收稿日期:2013-03-26 出版日期:2013-05-25 发布日期:2013-04-15
  • 基金资助:

    科技部科技基础性工作专项重点项目 (2007FY110100)

Studies on Seed Morphology of Cyananthus (Campanulaceae) and Its Taxonomical Significance

 ZHOU  Zhuo-1、2, CHEN  Guang-Fu-1、3, ZHANG  Jian-Wen-1, NIU  Yiang-1, LI  Zhi-Min-3, SUN  Hang-1   

  1. 1 Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences,
    Kunming 650201, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Life Science School, Yunnan Normal University, Kunming 650092, China
  • Received:2013-03-26 Online:2013-05-25 Published:2013-04-15
  • Supported by:

    科技部科技基础性工作专项重点项目 (2007FY110100)



关键词: 蓝钟花属, 种子形态学, 分类学, 系统学


Morphological characteristics of seeds (external, interior and seedcoat) in 11 species of Cyananthus were examined under stereomicroscope and scanning electron microscopy (SEM). The results indicate that seeds of Cyananthus are narrowly ovoid in shape, episperm are black, tan or brown and smooth. The episperm of sect. Stenolobi has a special black seed mottling. Embry of the seeds belongs to dwarf type, with white or brown, colloidal or oily endosperm. Ornamentation of seed coat belongs to striate type, ribs arranged spirally or parallel, and could further be divided into three types, as broadly reticulatestriate, narrowly reticulatestriate and striate. The seed morphology varies apparently among the three sections within the genus. The characters of seeds, such the length, the color on the surface and the ornamentation on seed coat, are of great significance in distinguishing the three sections of Cyananthus. Besides, sect. Annui demonstrated the highest level of diversification in seed morphology, which may be correlated to the more advanced adaptation of this section.

Key words: Cyananthus, Seed morphology, Taxonomy, Systematics