博士 / 國立臺灣大學 / 森林學研究所 / 87 / Genetic diversity within and genetic differentiation among five different elevation populations of Cyclobalanopsis glauca in Lan-Yang Hsi catchment area were investigated using 290 three-year old progenies belonging to 29 families and 89 mother trees in six elevation populations. Five out of the 11 loci examined were polymorphic in 9 enzyme systems. In progeny, the average proportion of polymorphic loci per population was 43.63% ranging from 36.36﹪to 45.45﹪. In average, the percent heterozygosity per individual ranged from 10.9﹪to 17.6﹪and averaged 16.0﹪, the number of alleles per locus ranged from 1.45 to 1.55 and averaged 1.51, and the effective number of alleles per locus from 1.13 to 1.23 and averaged 1.19,mean expected heterozygosity ranged from 0.115 to 0.190 and average 0.177 in progeny. In mother tree, the average proportion of polymorphic loci per population was 43.94% ranging from 36.36﹪to 45.45﹪. In average, the percent heterozygosity per individual ranged from 10.3﹪to 15.9﹪and averaged 12.7﹪, the number of alleles per locus ranged from 1.36 to 1.55 and averaged 1.47, and the effective number of alleles per locus ranged from 1.15 to 1.22 and averaged 1.19,mean expected heterozygosity ranged from 0.131 to 0.182 and averaged 0.167 in progeny. Compared with long-lived perennial woody plants probably Cyclobalanopsis glauca reflects high degree of genetic variation.
Partitioning the genetic variability into within- and among- population components with F-statistics and gene diversity analysis led to an estimate of within- population variation amounting to 92% of the total variation ,only about 8﹪of the total genetic diversity existed among population. These suggested a lack of barriers to gene flow among different elevation populations.The average single locus outcrossing rate and multilocus outcrossing rate was 0.743 and 0.956.These results showed relatively high outcrossing rate in Cyclobalanopsis glauca
As to morphological character, there were highly significant difference among the elevation and mother tree. There were no consistency agreement in the result of morphological and isozyme variation.
The average of flux density ,deposition velocity and depletion rate were 6.46（n mole/m2s），0.79mm/s，5.76﹪in different elevation fumigated with ozone. There were highly significant differences among the elevation and mother tree in three parameters. The average of flux density ,deposition velocity and depletion rate were 12.10（n mole/m2s），1.48mm/s，10.34﹪by sulfur dioxide fumigation. There were significant differences among the elevations and mother trees in flux density , deposition velocity. But, there was no significant difference among the elevations and significant difference among the mother trees in depletion rate. There was no significant difference among ozone and sulfur dioxide deposition velocity with respect to different enzyme patterns.
There were high correlation between ozone and sulfur dioxide flux density , deposition velocity and depletion rate with morphological character except germinative percentage.
| Identifer | oai:union.ndltd.org:TW/087NTU00360035 |
| Date | January 1999 |
| Creators | Chen-Yu Li, 李鎮宇 |
| Contributors | Chia-Hua Chiang, Ya-Nan Wang, 姜家華, 王亞男 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 107 |
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