Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture
A study of the genus Dodecatheon has been made with two purposes in view: 1. A reclassification, of the genus in northwestern America, including Alaska, Yukon, British Columbia, Alberta, Saskatchewan, Washington, Oregon, Idaho and Montana. 2. An incidental survey of its horticultural possibilities....
Main Author: | |
---|---|
Format: | Thesis |
Language: | English |
Published: |
University of British Columbia
1951
|
Subjects: | |
Online Access: | http://hdl.handle.net/2429/40834 |
id |
ftunivbritcolcir:oai:circle.library.ubc.ca:2429/40834 |
---|---|
record_format |
openpolar |
spelling |
ftunivbritcolcir:oai:circle.library.ubc.ca:2429/40834 2023-05-15T18:48:48+02:00 Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture Beamish, Katherine Isabel 1951 http://hdl.handle.net/2429/40834 eng eng University of British Columbia For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. Dodecatheon Text Thesis/Dissertation 1951 ftunivbritcolcir 2019-10-15T18:08:18Z A study of the genus Dodecatheon has been made with two purposes in view: 1. A reclassification, of the genus in northwestern America, including Alaska, Yukon, British Columbia, Alberta, Saskatchewan, Washington, Oregon, Idaho and Montana. 2. An incidental survey of its horticultural possibilities. The method of approach has included collection of living material, hybridization, cytological study, and examination of seven to eight hundred herbarium specimens. Throughout the progress of this work, a number of horticulturally valuable characteristics have been observed and noted. Chromosome counts have been obtained for a number of species and from a number of localities. These counts indicate an interesting pattern of polyploidy within the genus: diploids on the east of the Cascade Mountains, polyploids extending north to Alaska along the Pacific Coast. Similarity of diploids and polyploids suggest autoploidy. As a result of the work outlined above, the genus has been reclassified into ten species and one variety on the basis of morphology, cytology, and distribution. Though a number of these species, two particularly, are variable, further subdivision is considered unwise until much more can be learned about the cytogenetics of the genus. Finally, the suggestion is made that cytogenetic study is the next step in horticultural improvement and might provide valuable evidence regarding the course of evolution in the genus. Science, Faculty of Botany, Department of Graduate Thesis Alaska Yukon University of British Columbia: cIRcle - UBC's Information Repository Pacific Yukon |
institution |
Open Polar |
collection |
University of British Columbia: cIRcle - UBC's Information Repository |
op_collection_id |
ftunivbritcolcir |
language |
English |
topic |
Dodecatheon |
spellingShingle |
Dodecatheon Beamish, Katherine Isabel Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture |
topic_facet |
Dodecatheon |
description |
A study of the genus Dodecatheon has been made with two purposes in view: 1. A reclassification, of the genus in northwestern America, including Alaska, Yukon, British Columbia, Alberta, Saskatchewan, Washington, Oregon, Idaho and Montana. 2. An incidental survey of its horticultural possibilities. The method of approach has included collection of living material, hybridization, cytological study, and examination of seven to eight hundred herbarium specimens. Throughout the progress of this work, a number of horticulturally valuable characteristics have been observed and noted. Chromosome counts have been obtained for a number of species and from a number of localities. These counts indicate an interesting pattern of polyploidy within the genus: diploids on the east of the Cascade Mountains, polyploids extending north to Alaska along the Pacific Coast. Similarity of diploids and polyploids suggest autoploidy. As a result of the work outlined above, the genus has been reclassified into ten species and one variety on the basis of morphology, cytology, and distribution. Though a number of these species, two particularly, are variable, further subdivision is considered unwise until much more can be learned about the cytogenetics of the genus. Finally, the suggestion is made that cytogenetic study is the next step in horticultural improvement and might provide valuable evidence regarding the course of evolution in the genus. Science, Faculty of Botany, Department of Graduate |
format |
Thesis |
author |
Beamish, Katherine Isabel |
author_facet |
Beamish, Katherine Isabel |
author_sort |
Beamish, Katherine Isabel |
title |
Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture |
title_short |
Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture |
title_full |
Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture |
title_fullStr |
Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture |
title_full_unstemmed |
Studies in the genus DODECATHEON of North-western America, with some reference to its use in floriculture |
title_sort |
studies in the genus dodecatheon of north-western america, with some reference to its use in floriculture |
publisher |
University of British Columbia |
publishDate |
1951 |
url |
http://hdl.handle.net/2429/40834 |
geographic |
Pacific Yukon |
geographic_facet |
Pacific Yukon |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
_version_ |
1766242074224492544 |