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Plant Diversity ›› 2012, Vol. 34 ›› Issue (3): 248-256.DOI: 10.3724/SP.J.1143.2012.11184

• 研究论文 • 上一篇    下一篇


 涂蔷1, 吴涛2, 赵良成1**, 刘羽成2, 刘仁林3, 张志翔1   

  1. 1 北京林业大学生物科学与技术学院 树木系统进化与生物地理学研究室,北京100083;2 北京林业大学林学院,
    北京100083;3 赣南师范学院生命与环境科学学院,江西 赣州341000
  • 收稿日期:2011-12-14 出版日期:2012-06-25 发布日期:2012-03-12
  • 基金资助:

    国家自然科学基金项目 (30870149)

Features of Leaf Appendages of Bretschneidera sinensis in Different Development Stages

TU  Qiang-1, WU  Tao-2, ZHAO  Liang-Cheng-1**, LIU  Yu-Cheng-2, LIU  Ren-Lin-3, ZHANG  Zhi-Xiang-1   

  1. 1 Laboratory of Systematic Evolution and Biogeography of Woody Plants, College of Biological Sciences and Biotechnology,
    Beijing Forestry University, Beijing 100083, China; 2 College of Forestry, Beijing Forestry University, Beijing 100083, China;
    3 College of Life and Environmental Sciences, Gannan Normal University, Ganzhou 341000, China
  • Received:2011-12-14 Online:2012-06-25 Published:2012-03-12


利用石蜡切片及电子显微镜扫描技术,对伯乐树(Bretschneidera sinensis)不同发育阶段的叶表面表皮毛、角质层、乳突和气孔器4种附属结构进行了观察。结果显示:伯乐树叶的上、下表面和叶脉处分布着单细胞或多细胞的单列表皮毛,表皮毛的密度随着叶片的生长发育逐渐稀疏;叶片上表面覆盖着条纹状的角质层;叶片的下表面有鲜花状乳突,密度随叶片的生长逐渐稀疏;气孔仅见于下表面,气孔器类型为无规则型。伯乐树和叠珠树叶片具有相似的乳突结构,结合形态学、解剖学及分子证据,在一定程度上显示了伯乐树与叠珠树科可能存在较密切的关系;叶表面附属结构的特点反映了伯乐树对环境的长期适应。

关键词: 伯乐树, 叶表面附属结构, 叠珠树科, 无患子科


Leaf appendages (trichome, cuticle, papillae, stomatal apparatus) of Bretschneidera sinensis in different development stages were observed by paraffin section and scanning electron microscopy (SEM). The results showed that there were epidermal trichomes composed of one or several cells in a row on both leaf epiderms and veins. The density of the trichomes decreased with leaf development. The upper epiderm was covered with striated cuticles. The lower epiderm was covered with flowerlike papillae and the density also decreased with the development of leaf. The stomatal apparatus were anomocytic and found only on lower epidermis. By possessing similar papillae, combined with morphological, anatomical and molecular evidence, the close relationship between Bretschneidera sinensis and Akaniaceae was inferred. The characters of leaf appendages of Bretschneidera sinensis reflect its longterm adaption to environment.

Key words: Bretschneidera sinensis, Leaf appendages, Akaniaceae Sapindaceae