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3种檵木属植物结构解剖及环境适应性评价(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2016年05期
Page:
61-66
Column:
研究论文
publishdate:
2016-09-30

Article Info:/Info

Title:
A study on anatomical structure and adaptations to environment of three Loropetalum species(variety)
Article ID:
1000-2006(2016)05-0061-06
Author(s):
HONG Wenjun1 HUANG Jiuxiang1 SHEN Changqing1 XU Jianxin2 ZHUANG Xueying1*
1.South China Limstone Plants Research Center, College of Forestry and Landscape Architecture, South China Agricultural University,Guangzhou 510642,China;
2.Shenzhen Tech and Ecology &
Environment Co., Ltd., Shenzhen 518040, China
Keywords:
Loropetalum species anatomical structure adaptation to environment
Classification number :
S718.4
DOI:
10.3969/j.issn.1000-2006.2016.05.010
Document Code:
A
Abstract:
The structure and adaptations of the leaf, stem and root in the three plants of Loropetalum were compared by leaf segregation process and paraffin sectioning method. The results showed that: L. chinense and L. chinense var. rubrum(the variety)present strong drought tolerance and hardiness, whose upper epidermis exist epidermal trichomes and thicker cuticle; leaves exist well developed palisade tissue(P)and spongy tissue(S), and the ratio of P/S is high; the stems exist well developed phloem and xylem. By comparison, L. subcordatum present more shade-tolerance, whose leaves are glabrous and cuticle is thinner; the palisade tissue and spongy tissue are loose with lower P/S and the stem has larger pith. Analysis of subordinative function showed that the rank of adaption in three plants are: Loropetalum chinense var. rubrum > L. chinense > L. subcordatum. The adaptations of the three species(variety)were evaluated based on their structural characteristics.

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Last Update: 2016-10-30