A genetic analysis of a rare Arizona cactus: Echinocereus triglochidiatus var. arizonicus

Persistent Link:
http://hdl.handle.net/10150/291465
Title:
A genetic analysis of a rare Arizona cactus: Echinocereus triglochidiatus var. arizonicus
Author:
Alongi, Deborah Ann, 1961-
Issue Date:
1996
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Echinocereus triglochidiatus var. arizonicus is a federally endangered plant occurring in central Arizona. Since its 1979 listing, some botanists have questioned the definition of this taxon and its presumably limited range. Similar plants occurring in southeastern Arizona, classified by Benson (1982) as E. t. var. neomexicanus, are claimed to belong to the same taxon. RAPD analysis of plants from E. t. var. arizonicus, var. neomexicanus and the well-defined E. t. var. triglochidiatus were compared to determine genetic distance within and among groups. Genetic variability within groups was high and average genetic distance between groups nearly equal. Average heterozygosity levels within groups were not statistically different. RFLP analysis of noncoding chloroplast regions reveals a pattern of restriction sites and fragment lengths in three var. neomexicanus plants not present in plants of the other two taxa. The nature of the change was not determined but is consistent with a rearrangement of the region in question.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Biology, Molecular.; Biology, Botany.; Biology, Genetics.
Degree Name:
M.Sc.
Degree Level:
masters
Degree Program:
Graduate College; Biochemistry
Degree Grantor:
University of Arizona
Advisor:
Mount, David

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleA genetic analysis of a rare Arizona cactus: Echinocereus triglochidiatus var. arizonicusen_US
dc.creatorAlongi, Deborah Ann, 1961-en_US
dc.contributor.authorAlongi, Deborah Ann, 1961-en_US
dc.date.issued1996en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractEchinocereus triglochidiatus var. arizonicus is a federally endangered plant occurring in central Arizona. Since its 1979 listing, some botanists have questioned the definition of this taxon and its presumably limited range. Similar plants occurring in southeastern Arizona, classified by Benson (1982) as E. t. var. neomexicanus, are claimed to belong to the same taxon. RAPD analysis of plants from E. t. var. arizonicus, var. neomexicanus and the well-defined E. t. var. triglochidiatus were compared to determine genetic distance within and among groups. Genetic variability within groups was high and average genetic distance between groups nearly equal. Average heterozygosity levels within groups were not statistically different. RFLP analysis of noncoding chloroplast regions reveals a pattern of restriction sites and fragment lengths in three var. neomexicanus plants not present in plants of the other two taxa. The nature of the change was not determined but is consistent with a rearrangement of the region in question.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectBiology, Molecular.en_US
dc.subjectBiology, Botany.en_US
dc.subjectBiology, Genetics.en_US
thesis.degree.nameM.Sc.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineBiochemistryen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMount, Daviden_US
dc.identifier.proquest1381782en_US
dc.identifier.bibrecord.b34599824en_US
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