南京林业大学学报(自然科学版) ›› 2019, Vol. 43 ›› Issue (03): 195-199.doi: 10.3969/j.issn.1000-2006.201710002

• 研究简报 • 上一篇    下一篇

平安竹叶片缩小的细胞学观察

魏 强,郭 琳,陈 铭,夏苏娟,丁雨龙   

  1. 南京林业大学,南方现代林业协同创新中心,南京林业大学竹类研究所,江苏 南京 210037
  • 出版日期:2019-05-15 发布日期:2019-05-15
  • 基金资助:
    收稿日期:2017-10-06 修回日期:2018-03-22
    基金项目:国家自然科学基金项目(31670602, 31301808); 国家林业公益性行业科研专项项目(201504106); 江苏高校优势学科建设工程资助项目(PAPD)。
    第一作者:魏强(weiqiang@njfu.edu.cn),副教授,ORCID(0000-0001-5180-2087)。

Cytological study on the size reduction of leaf blade of Pseudosasa japonica var. tsusumiana

WEI Qiang, GUO Lin, CHEN Ming, XIA Sujuan, DING Yulong   

  1. Co-Innovation Center for the Sustainable Forestry in Southern China, Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, China
  • Online:2019-05-15 Published:2019-05-15

摘要: 【目的】解析平安竹叶片缩小的细胞学机制。【方法】对平安竹叶片的石蜡切片进行细胞学结构观察,用Gilies方程精确描述叶片外轮廓。【结果】平安竹叶片在长度、宽度、厚度及数目上显著小于其原种矢竹; 但数学建模结果表明平安竹叶片形态与矢竹相似,均可以用Gilies方程精确描述; 进一步解剖学观察发现,平安竹叶片多数细胞外观形态与矢竹类似,但泡状细胞形态极不规则; 量化分析发现其叶表皮细胞在长与宽上均与矢竹类似,但细胞数目明显减少; 纤维细胞相比于矢竹既短且宽。【结论】细胞数目变少及细胞变小是平安竹叶片缩小的细胞学原因。

Abstract: 【Objective】This work was conducted to elucidate the cellular mechanism underlying the leaf-size reduction of Pseudosasa japonica var. tsutsumiana. 【Method】Microscopic observations of paraffin sections were used to compare the cell morphology. The Gielis formula was used to precisely analyze the morphologies of the leaf blades of P. japonica var. tsutsumiana and P. japonica. 【Result】The width, length and thickness of the P. japonica var. tsutsumiana leaf are significantly smaller than those of P. japonica. However, leaves of both P. japonica var. tsutsumiana and P. japonica could be precisely described by the Gielis formula. The anatomical analysis indicated that most of the leaf cell morphologies of P. japonica var. tsutsumiana are similar to those of P. japonica, except for the bulliform cells, which exhibit an extremely irregular morphology. Cellular analysis discovered that the width and length of the epidermis cells of P. japonica var. tsutsumiana are similar to those of P. japonica, but the cell number of the former is significantly smaller than that of the latter. Additionally, the fiber cells of P. japonica var. tsutsumiana are shorter but wider than those of P. japonica. 【Conclusion】The reduction in the size and number of cells results in the leaf size reduction of P. japonica var. tsutsumiana.

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