碩士 / 國立中興大學 / 農藝學系 / 93 / Thirty-three lines of Hottuynia cordata Thunb. in Taiwan were cultured at the same locality and then used to investigate the intra-specific variation of anatomic characters, mainly included oil cells, starch grains and crystals, with paraffin sectioning. Data was analyzed by cluster and PCA procedure of MVSP software.
From the cross sections of tissues, lots of oil cells are distributed in the large parenchyma in contact with the epidermis of leaf, stem and rhizome. Oil cells are widely dispersed in the bundle sheath and phloem of leaf and in the cortex, pith and phloem of stem and rhizome. Starch grains are mainly distributed in the cortex and pith of stem and rhizome. Among the 33 H. cordata lines, there were significant differences in the anatomical characteristics. The examined characteristics with larger variation were the number of starch grain in storage tissue of leaf edge, the number of oil cell in epidermis of leaf blade, the crystal in leaf midrib, the number of oil cell in the pith of stem and the number of crystal in the pith of rhizome.
The results of correlation analysis for oil cells indicated that the number of oil cell in epidermis are positively correlated with that in storage tissue of leaf edge. Oil cells of every tissue in stem have the reciprocal positive correlation, and in rhizome so on. Analyzing the relation ships among organs, the number of oil cell in the phloem of midrib are positively correlated with that in the exodermis, cortex and pith of stem. The number of oil cell in the exodermis of stem is also positively correlated with that in phloem of rhizome. According to the result of the correlation analysis for starch grains, the number of starch grain in every tissues of leaf edge and blade have a reciprocal positively correlation, and of stem and of rhizome so on. For relation ships among organs, the number of starch grains in midrib was positively correlated with that in stem. In addition, the number of crystal in midrib was positively correlated with that in stem and in rhizome.
Depending on the cluster analysis, 33 lines are separated into three groups. The cluster I have three lines. The cluster Ⅱ and Ⅲ have twelve and eighteen lines, respectively. However, according to the principle component analysis, 33 lines are separated into two groups and four individual lines. The first principal component represents the content of oil cell in bundle sheath and phloem and the starch grain in storage cell of midrib, the second principal component represents the content of starch grain in epidermis of leaf edge and blade, and the third principal component represents the content of oil cell in cortex, phloem and pith of stem and the content of crystal in midrib.
| Identifer | oai:union.ndltd.org:TW/093NCHU0417011 |
| Date | January 2005 |
| Creators | Ying-Chen Chen, 陳瑩珍 |
| Contributors | Tzer-Kuan Hu, 胡澤寬 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 0 |
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