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Bulletin of Botanical Research ›› 2019, Vol. 39 ›› Issue (6): 817-825.doi: 10.7525/j.issn.1673-5102.2019.06.003

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Ecological Adaption of Leaf Costa of Bryophyte from Alpine Periglacial Region

YUAN Zhen-Yan, WANG Hong, WANG Kai   

  1. College of Life Science and Technology, Xinjiang University, Urumqi 830046
  • Received:2019-04-16 Online:2019-11-05 Published:2019-11-16
  • Supported by:
    National Natural Science Fundation(41461010);Xinjiang university Student Innovation Training Program Project

Abstract: Thirty-five species of bryophyte were gathered from different habitats of Tianshan No.1 Glacier of Xinjiang. They were isolated and analyzed by nitric acid-chromic acid segregation in lab. Based on the observation, It is deduced that the cell length, cell width and cell wall thickness were relatively larger and larger, the number of pit field were higher associated with the habitats from wet to dry. The end tails have various forms, the leaf costa of bryophyte, especially lived in damp soil and in rock, have a few end tails. It assumed that end tails was active in strengthening cell connection and coordinating the exchange of water and nutrients between cells. There is no significant difference on the number of pit fields of bryophyte from four habitats respectively. The result indicates the adaptive strategies of bryophyte how to survive in alpine environment. This study provides a basis for further researches of the conductivity and ecological adaption of bryophytes in alpine environment.

Key words: periglacial region, bryophyte, costa, conductive cell, ecology

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