dc.contributor.advisor |
Sun, Genlou |
|
dc.creator |
Zhang, Xiaodi |
|
dc.date.accessioned |
2013-09-10T18:43:39Z |
|
dc.date.available |
2013-09-10T18:43:39Z |
|
dc.date.issued |
2009 |
|
dc.identifier.other |
QK495 G74 Z48 2009 |
|
dc.identifier.uri |
http://library2.smu.ca/xmlui/handle/01/25146 |
|
dc.description |
iv, 85 leaves : ill. ; 29 cm. |
|
dc.description |
Includes abstract. |
|
dc.description |
Includes bibliographical references (leaves 71-85). |
|
dc.description.abstract |
Although the relationship of genera of Triticeae has been analyzed in many previous studies, polyploid genera have not been as extensively studied as diploid ones within a phylogenetic framework. The present study focuses on tetraploidy of Triticeae Elymus species, which are all polyploid and distributed worldwide. Five basic genomes (St, H, Y, P, and W) in different combinations have so far been found in the Elymus. To estimate the phylogenetic relationship of tetraploid Elymus with genome content of StH or StY, data from nuclear single copy gene DMC1 (disrupted meiotic cDNA) of 39 tetraploid Elymus accessions and their potential genome donor diploid species were used. For StH species involved, the result revealed close relationship of Pseudoroegneria and Hordeum to Elymus StH species by multiple origins and recurrent hybridization. For StY species involved, it is suggested that St and Y genomes may be related on this locus. A direct contribution from P genome to StY genome through introgression still remains a possibility. |
en_CA |
dc.description.provenance |
Submitted by Trish Grelot (trish.grelot@smu.ca) on 2013-09-10T18:43:39Z
No. of bitstreams: 1
zhang_xiaodi_masters_2009.PDF: 2262188 bytes, checksum: a024d1487d1286825835af9043111331 (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2013-09-10T18:43:39Z (GMT). No. of bitstreams: 1
zhang_xiaodi_masters_2009.PDF: 2262188 bytes, checksum: a024d1487d1286825835af9043111331 (MD5) |
en |
dc.language.iso |
en |
en_CA |
dc.publisher |
Halifax, N.S. : Saint Mary's University |
|
dc.subject.lcc |
QK495.G74 |
|
dc.subject.lcsh |
Elymus -- Molecular genetics |
|
dc.subject.lcsh |
Elymus -- Phylogeny -- Molecular aspects |
|
dc.title |
Molecular phylogeny of tetraploid Elymus species revealed by the DMC1 gene |
en_CA |
dc.type |
Text |
en_CA |
thesis.degree.name |
Master of Science in Applied Science |
|
thesis.degree.level |
Masters |
|
thesis.degree.discipline |
Biology |
|
thesis.degree.grantor |
Saint Mary's University (Halifax, N.S.) |
|