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You searched for subject:(Calocedrus). Showing records 1 – 2 of 2 total matches.

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NSYSU

1. Chung, Chia-ying. Genetic diversity, genetic divergence and phylogeographical patterns in Calocedrus based on microsatellites.

Degree: Master, Biological Sciences, 2015, NSYSU

The genus Calocedrus is Eastern Asian â North American disjunctive distribution. Calocedrus formosana (Florin) Florin is restricted to Taiwan, Calocedrus macrolepis Kurz, and C. rupestris Aver., T.H. Nguyên & K.L. Phan are scattered throughout southwestern of China to northern of Indochina and Hainan Island, and Calocedrus decurrens Florin is native to western North America. According to fossil records, Calocedrus had been widespread in the Northern Hemisphere. In this study, we examined phylogeographical patterns, genetic diversity and genetic divergence in this genus based on 20 microsatellite markers. These 20 polymorphic microsatellite loci were used to evaluate genetic diversity among 627 samples from 27 populations of four taxa in Calocedrus, including 10 populations from C. formosana 265 individuals, 14 populations from C. macrolepis 314 individuals, 2 populations from C. rupestris 33 individuals, and 15 individuals from C. decurrens. Genetic diversity indices for 4 species based on 20 polymorphic loci, including the number of alleles (Na), the number of effective alleles (Ne) and the observed and expected heterozygosity (Ho and He), were estimated. The 4 species genetic diversity indices mean value range are: Na: from 3.65 to 8.05, Ne: from 2.04 to 2.66, Ho: from 0.14 to 0.26, He: from 0.48 to 0.54. In 10 C. formosana populations, genetic diversity indices mean value range are: Na: from 3.65 to 8.05, Na: from 2.35 to 4.4, Ne: from 1.76 to2.17, Ho: from 0.13 to 0.19, He: from 0.36 to 0.49. In 14 C. macrolepis populations, genetic diversity indices mean value range are: Na: from 4.25 to 2.45, Ne: from 1.83 to 2.39, Ho: from 0.18 to 0.35, He: from 0.36 to 0.53. AMOVA showed 78.12% genetic variation accumulated within population and high levels of genetic differentiation (FST =0.22). In C. formosana, C. macrolepis and C. rupestris AMOVA showed 61% and 48.72% genetic variation accumulated in among individuals within populations and with individuals and low levele of genetic differentiation (FSTï¼0.07&0.094). The results of PCoA showed high genetic divergence among species except between C. macrolepis and C. rupestris, also significant genetic divergence among populations in C. formosana and C. macrolepis. In STRUCTURE analysis at Kï¼2 and Kï¼3 significant genetic clustering for four Calocedrus species might caused by Neogene, Paleogene and Quaternary climatic oscillations. In IMa result, the ancestral effective population size (21 million) is greater than C. formosana and C. macrolepis (385 and 7048). This result indicated these two species retreated to refugia caused by Quaternary climatic oscillations. The migration rate from C. formosana to C. macrolepis (M12)was 1.08Ã10-3and migration rate from C. macrolepis to C. formosana (M21) was 2.55Ã10-5. This result indicated species migration path from island to mainland at Eastern Asian. In STRUCTURE result no significant geographical barrier caused by gene flow in C. formosana populations. In C. macrolepis populations, the population geographical differentiation and… Advisors/Committee Members: Kuo-Hsiang Hung (chair), Ho-Yih Liu (chair), Yu-Chung Chiang (committee member).

Subjects/Keywords: genetic diversity; genetic differentiation; microsatellite; phylogeographical; Calocedrus

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Chung, C. (2015). Genetic diversity, genetic divergence and phylogeographical patterns in Calocedrus based on microsatellites. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724115-101740

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Chung, Chia-ying. “Genetic diversity, genetic divergence and phylogeographical patterns in Calocedrus based on microsatellites.” 2015. Thesis, NSYSU. Accessed July 14, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724115-101740.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Chung, Chia-ying. “Genetic diversity, genetic divergence and phylogeographical patterns in Calocedrus based on microsatellites.” 2015. Web. 14 Jul 2020.

Vancouver:

Chung C. Genetic diversity, genetic divergence and phylogeographical patterns in Calocedrus based on microsatellites. [Internet] [Thesis]. NSYSU; 2015. [cited 2020 Jul 14]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724115-101740.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chung C. Genetic diversity, genetic divergence and phylogeographical patterns in Calocedrus based on microsatellites. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724115-101740

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Oslo

2. Nguyen, Sanko Hoan. The utilization of micro-and macromolecular data for the analyses of evolutionary problems : examples from Juniperus and Calocedrus.

Degree: 2005, University of Oslo

SUMMARY In the last decade, techniques based on DNA markers have been used to detect variation at DNA level and have proven to be reliable and very effective for distinguishing between closely related genotypes. The development of the random amplified polymorphic DNA (RAPD) markers (Williams et al., 1990; Welsh et al., 1991) allowed genome characterization in several plant groups. The RAPD technique has been useful in studying polymorphism, identifying genes of interest, and permitting the determination of phylogenetic relationships and intraspecific diversity at a molecular genetic level. In four minor studies, this thesis deals with the evolutionary relationships and genetic variation among different populations of plants in two genera of Juniperus and Calocedrus using the methodology of RAPD-polymerase chain reaction (PCR) together with morphological traits. By performing chemical analysis of leaf essential oils and comparing their oil compositions, these data are also utilized to define phylogeny and taxonomy of species in these genera. In this respect, the synthesis of data from different levels, from biochemical to genetic, attempts to increase our understanding in plant evolution and systematics. The basics of the methods employed will be described briefly and their applications also reviewed. The first study examined the varieties of the species Juniperus deppeana. Populations of J.deppeana var. deppeana, var. pachyphlaea, var. patoniana, var. robusta, var. zacatecensis, and J. gamboana were analyzed by DNA fingerprinting (RAPDs). By comparison with the closely related J. saltillensis, J. gamboana was found to conspecific with J. deppeana and recognized as a new variety: J. deppeana var. gamboana (Mart.) R. P. Adams. Juniperus deppeana var. pachyphlaea and J. d. var. zacatecensis were found to be a part of J. deppeana var. deppeana. Juniperus deppeana var. zacatecensis was reduced to a new forma: J. deppeana f. zacatecensis (Mart.) R. P. Adams. Considerable amounts of intra-population variation was present. Previous Pleistocene distributions and past gene flow seems to have contributed to the lack of populational differentiation. A key and revised distribution map of J. deppeana is also presented here. In the second study, another species of Juniperus, J. communis, was investigated to detect the genetic variation in Norwegian junipers, also using RAPD-DNA fingerprinting applications. It has been shown (Looman and Baerheim Svendsen, 1992) that the needle essential oils of J. communis from the mountains of Norway were dominated by sabinene, in contrast to the oils from the lowland characterized by having high percentage of á-pinene. RAPD data of these two populations, one from the mountains of central Norway and the other from the coastal areas, were analyzed to determine whether these differences are due to divergence in the plant genome or they are merely products of environmentally induced changes. Principal coordinate analysis did not show two distinctive groups as expected; the coastal samples (high… Advisors/Committee Members: Jan Karlsen og Robert P. Adams.

Subjects/Keywords: essensielle oljer RADP-PCR einebær DNA-fingerprinting Calocedrus Juniperus; VDP::568

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Nguyen, S. H. (2005). The utilization of micro-and macromolecular data for the analyses of evolutionary problems : examples from Juniperus and Calocedrus. (Thesis). University of Oslo. Retrieved from http://urn.nb.no/URN:NBN:no-11386 ; https://www.duo.uio.no/handle/10852/12094

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Nguyen, Sanko Hoan. “The utilization of micro-and macromolecular data for the analyses of evolutionary problems : examples from Juniperus and Calocedrus.” 2005. Thesis, University of Oslo. Accessed July 14, 2020. http://urn.nb.no/URN:NBN:no-11386 ; https://www.duo.uio.no/handle/10852/12094.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Nguyen, Sanko Hoan. “The utilization of micro-and macromolecular data for the analyses of evolutionary problems : examples from Juniperus and Calocedrus.” 2005. Web. 14 Jul 2020.

Vancouver:

Nguyen SH. The utilization of micro-and macromolecular data for the analyses of evolutionary problems : examples from Juniperus and Calocedrus. [Internet] [Thesis]. University of Oslo; 2005. [cited 2020 Jul 14]. Available from: http://urn.nb.no/URN:NBN:no-11386 ; https://www.duo.uio.no/handle/10852/12094.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nguyen SH. The utilization of micro-and macromolecular data for the analyses of evolutionary problems : examples from Juniperus and Calocedrus. [Thesis]. University of Oslo; 2005. Available from: http://urn.nb.no/URN:NBN:no-11386 ; https://www.duo.uio.no/handle/10852/12094

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.