干旱区研究

干旱区研究 >

2016 , Vol. 33 >Issue 5: 1071 - 1080

DOI: https://doi.org/10.13866/j.azr.2016.05.22

植物生理

胡杨不同发育阶段叶片形态解剖学特征及其与胸径的关系

  • 赵鹏宇 ,
  • 冯梅 ,
  • 焦培培 ,
  • 李志军
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  • 1.新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室,新疆 阿拉尔 843300;
    2.塔里木大学植物科学学院,新疆 阿拉尔 843300
赵鹏宇(1990-),男,在读硕士研究生,从事干旱区生物多样性及其保育研究. E-mail: 394382557@qq.com

收稿日期: 2015-11-10

  修回日期: 2016-03-23

  网络出版日期: 2016-09-28

基金资助

国家自然基金(31060026,U1303101,31460042)项目资助

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Relationship between Morphological or Anatomical Features of Leaves and Trunk Diameter at Breast Height at Different Growing Stages of Populus euphratica

  • ZHAO Peng-yu ,
  • FENG Mei ,
  • JIAO Pei-pei ,
  • LI Zhi-jun
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  • 1. Key Laboratory of Biological Resources Conservation and Utilization in Tarim Basin,Xinjiang Corps of Production and Construction,Aral 843300,Xinjiang,China;
    2. College of Plant Sciences,Tarim University,Aral 843300,Xinjiang,China

Received date: 2015-11-10

  Revised date: 2016-03-23

  Online published: 2016-09-28

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摘要

采用MSR-9600TFU2扫描仪和常规石蜡切片,分析胡杨不同发育阶段叶片形态解剖学特征及其与胸径的关系。结果表明:① 叶片宽、叶面积、气孔密度、厚度均随胸径增加沿树冠基部向顶部方向逐渐增大,叶片长和叶形指数则随胸径增加沿树冠基部向顶部方向逐渐减小。② 叶片上下表皮细胞数和表皮细胞长、栅栏组织厚度、栅栏组织细胞长和宽均随胸径增加沿树冠基部向顶部方向逐渐增大;海绵组织厚度随胸径的增加而逐渐减小,树冠基部向顶部方向则逐渐增大。③ 相关分析显示,叶片宽、叶面积和叶片厚度分别与胸径呈极显著/显著正相关,叶形指数与胸径呈极显著负相关;叶片栅栏组织厚度、表皮细胞数、表皮组织厚度、表皮细胞长分别与胸径呈极显著/显著正相关,海绵组织厚度与胸径呈极显著负相关;叶片形态指标与解剖结构指标间也存在正/负相关关系,表明胡杨叶形态结构变化与个体发育阶段密切相关。

关键词： 胡杨(Populus euphratica); 异形叶; 叶片形态; 解剖学; 胸径

本文引用格式

赵鹏宇 , 冯梅 , 焦培培 , 李志军 . 胡杨不同发育阶段叶片形态解剖学特征及其与胸径的关系[J]. 干旱区研究, 2016 , 33(5) : 1071 -1080 . DOI: 10.13866/j.azr.2016.05.22

Abstract

In this study,the leaf morphological and structural features of Populus euphratica at different growing stages and their relationships with DBH were researched. Results are as follows: ① Along with the increase of DBH and crown level from the base to the top,the leaf width,area,stomatal density and thickness of leaves of P.euphratica were gradually increased,while the leaf length and leaf index(leaf length/leaf width) were steadily decreased; ② The cell number,length of epidermal cells and thickness,and length and width of palisade tissue were gradually increased with the increase of diameter at breast height and crown level(from base to top),while the thickness of spongy tissue was gradually decreased with the increase of diameter at breast height but increased gradually from the base to the top; ③ Correlation analysis revealed that there were the extremely significant or significant positive correlations between the DBH and the leaf width,area and thickness,but there was a significant negative one between DBH and leaf index. There were the significant positive or negative correlations between palisade tissue thickness,epidermal cell length,cell number,thickness of epidermal tissue and DBH. There was a significant negative correlation between thickness of spongy tissue and DBH. There were also the significant positive or negative correlation between leaf morphological parameters and leaf anatomical and structure parameters.

Key words： Populus euphratica; heterophyll; leaf morphology; anatomy; diameter at breast height

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