5种润楠属植物叶表皮结构和滞尘能力研究  

Study on Leaf Epidermis Structure and Dust-retention Ability of Five Machilus Species

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作  者:黄承石 潘珈瑶 王东 谢芹 胡蝶[1] HUANG Chengshi;PAN Jiayao;WANG Dong;XIE Qin;HU Die(Center of Phoebe Germplasm Resources Evaluation & Innovation,Yangtze Uinivesity,Jingzhou 434025,China;Wuhan Pin Road Construction Garden Engineering Corporation,Wuhan 430040,China;New World Development (Wuhan) Landscaping Engineering Corporation,Wuhan 430040,China)

机构地区:[1]长江大学楠木种质资源评价与创新中心,湖北荆州434025 [2]武汉品道建筑园林工程有限公司,湖北武汉430040 [3]新世界发展(武汉)园林绿化工程有限公司,湖北武汉430040

出  处:《河南科技大学学报:自然科学版》2019年第2期76-79,86,109,110共7页Journal of Henan University of Science And Technology:Natural Science

基  金:国家自然科学基金项目(31270740);湖北省科技计划支撑基金项目(2013BBB24);湖北省自然科学基金项目(2017CFB390).

摘  要:以5种润楠属植物(闽桂润楠(Machilusminkweiensis)、赛短花润楠(Machilusparabreviflora)、小果润楠(Machilusmicrocarpa)、刨花润楠(Machiluspauhoi)和滇润楠(Machilusyunnanensis))幼苗叶片为研究对象,通过观察其叶片形态特征,测量其叶面积、重金属元素Pb、Cr、Fe、Cu、Cd含量,以及下表皮细胞的长度、宽度与气孔器的长度,综合评定及比较其滞尘能力。研究结果表明:5种润楠属植物叶片外部形态有明显差异,其叶脉结构各不相同。单位面积叶片上粉尘中重金属元素Pb、Cr、Fe、Cu、Cd总含量由多到少依次为赛短花润楠>小果润楠>刨花润楠>闽桂润楠>滇润楠。叶片下表皮细胞大小不一,闽桂润楠的最大,滇润楠的最小。刨花润楠气孔器长度最大,滇润楠的最小。The seedling leaves of five Machilus species(Machilus minkweiensis,Machilus parabreviflora,Machilus microcarpa,Machilus pauhoi,and Machilus yunnanensis)were taken as research objects.Morphological characteristics of leaves were observed.The leaf area,content of heavy metal element Pb,Cr,Fe,Cu,Cd,length and width of lower epidermal cell,and length of stomatal apparatus were measured to comprehensively assess and compare the dust-retention abilities of leaves.The results show that there are obvious differences in the leaves external morphology of five species Machilus,and their vein structures are different.The total amount of heavy metal element Pb,Cr,Fe,Cu,Cd in the dust on the unit leaf area from high to low is Machilus parabreviflora>Machilus microcarpa>Machilus pauhoi>Machilus minkweiensis>Machilus yunnanensis.The sizes of the leaf lower epidermal cells are various.Machilus minkweiensis is the largest,while Machilus yunnanensis is the smallest.The length of stomatal apparatus of Machilus pauhoi is the biggest,while Machilus yunnanensis is the smallest.

关 键 词:润楠属 叶片形态 金属元素 表皮细胞 滞尘能力 

分 类 号:S792.24[农业科学—林木遗传育种;农业科学—林学]

 

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