Abstract
Secondary xylem characteristics and horizontal variations were described in three xerophytic species, Zygophyllum xanthoxylon, Nitraria tangutorum, Tetraena mongolica of Zygophyllaceae native to western China. All the species have obvious growth ring boundaries except sometimes discontinuous in T. mongolica and Z. xanthoxylum ring to semi-ring-porosity; simple perforation plate; alternate intervessel pitting; non-septate fibres; paratracheal confluent axial parenchyma; helical thick enings and heterocellular rays. However the vessel arrangement and quantitative features of vessels were different. Vessel elements tend to be shorter and narrower and more frequent in T. mongolica than in other two species that are hardly different could lead to greater conductive safety. The variation of vessel element length and fibre length along radial direction showed irregular tendency. There was significant difference in both fibre length and vessel element length among-tree and within-tree. Furthermore, the relationships between anatomical features and adaptability to desert environments were also discussed.
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Biography: YANG Shu-min (1971), female, Ph. D. Lecture in the Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, P. R. China.
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Yang, Sm., Furukawa, I. Anatomical adaptations of three species of Chinese xerophytes (Zygophyllaceae). J. of For. Res. 17, 247–251 (2006). https://doi.org/10.1007/s11676-006-0056-7
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DOI: https://doi.org/10.1007/s11676-006-0056-7