干旱区生态环境知识资源中心(Arid): 8种木本旱生植物的木质部解剖学特性研究

Arid

	8种木本旱生植物的木质部解剖学特性研究
其他题名	Study on Anatomical Property of Xylem Cells of the Eight Woody Xerophytes Grown in China
	杨淑敏; 江泽慧; 任海青
ISSN	1000-4025
出版年	2007
卷号	27 期号:8 页码:1507-1516
中文摘要	从生态学角度对8种旱生植物木材的次生木质部结构进行了对比研究.结果表明,8树种次生木质部结构的共同特点为:生长轮分界明显(霸王和四合木的年轮有时不连续),半环孔材,单穿孔,导管壁间纹孔互列,木纤维无横隔膜,联合傍管轴向薄壁组织丰富,导管壁上呈现螺纹加厚,都具有异型射线;它们主要差异在于射线和导管的数量化指标:四合木异型射线1～2列,霸王、白刺、沙冬青和胡枝子射线2～5列,柽柳、柠条和花棒大型射线4～10列;导管分子长度和纤维长度在树种间和同一树种个体间差异较明显.四合木和沙冬青导管频率较大,导管管孔较小,因此Vulnerability和Mesomorphy值也较小,更能适应干旱环境.
英文摘要	The Secondary xylem characteristics were described and compared in details from an ecological perspective in eight xerophytic species grown in arid sandy region in China. All the species showed similar wood structure: obvious growth ring boundaries except sometimes discontinuous in Tetraena mongolica and Zygophyllum xanthoxylum. Ring to semi-ring-porosity; simple perforation plate; alternate intervessel pitting;non-septate fibres; paratracheal confluent axial parenchyma; helical thickenings and heterocellular rays. But there were few quantitative differences of ray and vessel observed among them. Rays are mainly uniseriate in T. mongolica, 2～5-seriate in Ammo pi ptanthus mongolicus, Lespedeza bicolor, Nitraria tan-gutorum and Z. xanthoxylon, commonly 4～10-seriate in other three species. T. mongolica and A, mongolicus had narrower vessels and larger vessel frequency than other six species that had wider and smaller vessel frequency, which could lead to a smaller vulnerability and mesomorphy value. There was significant difference in both fibre length and vessel element length among-tree and within-tree, Thus it was considered that the anatomical features of T. mongolica and A. mongolicus were more likely to suffer from water stress than that of other species.
中文关键词	旱地 ; 旱生植物 ; 木材生态解剖学 ; 适应性
英文关键词	dryland xerophytes ecological wood anatomy adaptability
语种	英语
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:2851823
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221604
作者单位	Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
推荐引用方式 GB/T 7714	杨淑敏,江泽慧,任海青. 8种木本旱生植物的木质部解剖学特性研究[J],2007,27(8):1507-1516.
APA	杨淑敏,江泽慧,&任海青.(2007).8种木本旱生植物的木质部解剖学特性研究.,27(8),1507-1516.
MLA	杨淑敏,et al."8种木本旱生植物的木质部解剖学特性研究".27.8(2007):1507-1516.