Title page for etd-0819102-145014


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URN etd-0819102-145014
Author Chih-Sung Chen
Author's Email Address m8821324@student.nsysu.edu.tw
Statistics This thesis had been viewed 5576 times. Download 1263 times.
Department Biological Sciences
Year 2001
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A Study of Taiwan Polypodiaceae Frond Venation Patterns
Date of Defense 2002-07-19
Page Count 52
Keyword
  • polypodiceae
  • taiwan
  • venatiion
  • Abstract Leaf vein patterns of ferns are highly stable at genus and family level. The vein patterns include free vein, reticulate vein and mixed type of above two. The evolutionary direction of the fern venation is from free veins toward further dividing into anastomosing venation. 
    In this study, observations on the venation were made for 53 species of Taiwan Polypodiaceae ferns. Two basic patterns were found : mixed and reticulate. The growth of the venation can be divided into three types : r type, Y type and T type. The r type was found in Pyrrosia ; the Y type was found in Drynaria, Aglaomorpha, Polypodium, Leptochilus and Loxogramme ; and the T type was found in Arthromeris, Selliguea, Lemmaphyllum, Lepisorus, Colysis, Microsorum, Phymatosorum and Neocheiropteris.
    The leaf venation patterns of venation in Polypodiaceae can be divided into seven modes in three lines, with each genus has its own common characteristies. This study of vein pattern demonostrates its important role in the investigation of fern evolution.
    Advisory Committee
  • Chang-sheng Kuoh - chair
  • Yuen-po Yang - co-chair
  • Ho-Yih Liu - advisor
  • Files
  • etd-0819102-145014.pdf
  • indicate access worldwide
    Date of Submission 2002-08-19

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