Chromosome studies of Alstroemeria pelegrina L.
| dc.contributor.author | Stephens, Janice L., author | |
| dc.contributor.author | Tsuchiya, Takami, advisor | |
| dc.contributor.author | Hughes, Harrison G., advisor | |
| dc.contributor.author | Lee, Chi Won, committee member | |
| dc.date.accessioned | 2023-01-27T14:52:42Z | |
| dc.date.available | 2023-01-27T14:52:42Z | |
| dc.date.issued | 1990 | |
| dc.description | Covers not scanned. | |
| dc.description.abstract | Karyotype analysis is one of the approaches to determine the parental species used for hybrid variety breeding. Alstroemeria pelegrina L. is considered to be one of the primary parents used in the development of many commercial cultivars of Alstroemeria. Somatic chromosomes were prepared from root tip cells using the acetocarmine squash method. Measurements from these cells were then used to develop a karyotype for A. pelegrina L.. The genome of A. pelegrina L. was shown to consist of two groups of four chromosomes each. The first group consists of metacentric or submetacentric chromosomes in which the smallest submetacentric is satellited. The second group consists of four acrocentric chromosomes in which chromosomes 5, 7 and 8 are satellited. The small submetacentric satellited chromosome in the first group provides a marker chromosome which is unique to A. pelegrina L.. The presence of this chromosome in the karyotype of a cultivar would indicate that A. pelegrina L. was a parent of that cultivar. Although A. pelegrina L. was shown to have a very similar karyotype for all the plants studied there were some differences between them. This indicates that chromosomal changes may be occurring within the species in individual plants resulting in karyotypic polymorphism. A study of the anthers from immature buds at anaphase I showed 8-8 separation without any abnormality. The stages of diakinesis or metaphase I showed that chromosome pairing was normal with 8 bivalents. Pollen viability varied from 44.7% in A. pelegrina L. 'rosea' to 80% in A. pelegrina L. 'alba'. | |
| dc.format.medium | masters theses | |
| dc.identifier.uri | https://hdl.handle.net/10217/236134 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation | Catalog record number (MMS ID): 991017072559703361 | |
| dc.relation | QK495.A484S74 1990 | |
| dc.relation.ispartof | 1980-1999 | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.subject | Amaryllidaceae | |
| dc.title | Chromosome studies of Alstroemeria pelegrina L. | |
| dc.type | Text | |
| dc.type | StillImage | |
| dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). | |
| thesis.degree.discipline | Horticulture | |
| thesis.degree.grantor | Colorado State University | |
| thesis.degree.level | Masters | |
| thesis.degree.name | Master of Science (M.S.) |
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