天津农学院学报 ›› 2023, Vol. 30 ›› Issue (5): 6-10.doi: 10.19640/j.cnki.jtau.2023.05.002

• 研究与简报 • 上一篇    下一篇

叶龄与叶位对鸢尾叶片微结构的影响

柴旭旭, 白燕娇, 威尼拉·托合提孙, 孙小玲通信作者   

  1. 天津农学院 园艺园林学院,天津 300392
  • 收稿日期:2022-09-02 出版日期:2023-10-31 发布日期:2023-12-22
  • 通讯作者: 孙小玲(1980—),女,讲师,博士,主要从事草坪生理学和草原生态学的研究。E-mail:xiaolingsun@tjau.edu.cn。
  • 作者简介:柴旭旭(1996—),女,硕士在读,主要从事草坪生理学和草原生态学的研究。E-mail:824388481@qq.com。
  • 基金资助:
    国家自然科学基金项目(31201847,31800167); 天津市研究生科研创新项目(2019YJSS097)

Effects of leaf age and leaf position on leaf microstructure of Iris

Chai Xuxu, Bai Yanjiao, Weinila·Tuohetisun, Sun XiaolingCorresponding Author   

  1. College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300392, China
  • Received:2022-09-02 Online:2023-10-31 Published:2023-12-22

摘要: 植物可以通过调整叶片微观结构来适应环境,本文研究了不同叶龄与叶位鸢尾叶片的气孔特征与叶脉网络结构等参数的变化情况。结果表明:叶片刚刚成熟时,近/远轴面气孔密度和叶脉密度高于幼叶和老叶,气孔大小则小于幼叶和老叶。从叶基到叶尖,近/远轴面气孔密度、纵脉密度、横脉密度以及叶脉密度逐渐增大,而近/远轴面气孔大小与网眼空隙面积却逐渐减少。由此可知,叶片刚刚成熟时,代谢较旺盛,抗性较强;叶片中间部位更能代表整个叶片的状态。

关键词: 鸢尾, 叶龄, 叶位, 叶脉网络结构, 气孔

Abstract: Plant can adjust leaf microstructure to adapt to different environment. Here, we studied leaf vasculature and stomatal characteristics of Iris at different leaf age and leaf position. The results showed that vascular density and adaxial/abaxial stomatal density in newly developed leaves was higher than in young and mature leaves, whereas stomatal size was smaller. From leaf base to leaf tip, adaxial/abaxial stomatal density, longitudinal/transverse vein density, and total vein density gradually increased, whereas adaxial/ abaxial stomatal size and areolar area gradually decreased. It is concluded that metabolism is faster in newly developed leaves, and compared to leaf base and leaf tip, the middle part of leaf blade is more representative for the state of the whole leaf.

Key words: Iris, leaf age, leaf position, vein network structure, stoma

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