Advanced

Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae

Widén, Marie LU (1996)
Abstract
Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae



The frequencies of females, hermaphrodites and partially male-sterile (PMS) genets of Glechoma hederacea were estimated in natural populations in S Sweden. The frequency of females and PMS genets in natural populations varied from 0 to 100%. The temporal and spatial variation in stamen fertility in PMS genets was studied in the field and in cultivation. Hermaphrodite flowers were self-compatible, seed production was found to be pollen limited and the clonal structure of the species usually caused a reduction in seed set in females. Hermaphrodite and PMS clones were usually larger than female clones and more heterozygous.... (More)
Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae



The frequencies of females, hermaphrodites and partially male-sterile (PMS) genets of Glechoma hederacea were estimated in natural populations in S Sweden. The frequency of females and PMS genets in natural populations varied from 0 to 100%. The temporal and spatial variation in stamen fertility in PMS genets was studied in the field and in cultivation. Hermaphrodite flowers were self-compatible, seed production was found to be pollen limited and the clonal structure of the species usually caused a reduction in seed set in females. Hermaphrodite and PMS clones were usually larger than female clones and more heterozygous. Disomic inheritance of duplicated loci was found in this tetraploid species, and segregation ratios for allozymes conformed to Mendelian expectation. Allozymes were used to establish multilocus genotypes in seven populations in S Sweden and three populations in the S Czech Republic. Clonal diversity in an area of c. 100 m2 was greatest in an ephemeral population (PD i.e. proportion of distinguished genets = 0.98) and lowest in more stable habitats (PD = 0.01). Little evidence of intermingling of different genets was found. (Less)
Please use this url to cite or link to this publication:
author
opponent
  • Ågren, Jon, Ekologisk botanik, Umeå University
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Systematisk botanik, chemotaxonomy. Physiology of nonvascular plants, phytogeography, morphology, taxonomy, Systematic botany, clonal structure, isoloci, disomic inheritance, genetic diversity, polyploidy, male sterility, sex expression, pollen limitation, sexual reproduction, gynodioecy, Glechoma hederacea, Lamiaceae, taxonomi, morfologi, kemotaxonomi. Växters fysiologi (inte kärlväxter).
pages
113 pages
publisher
Systematic Botany
defense location
Department of Ecology
defense date
1996-04-19 10:00
external identifiers
  • other:ISRN: LUNBDS/(NBBS-1022)/1-113 (1996)
language
English
LU publication?
yes
id
82fc3dca-7153-49df-8add-e6eb1f1ace55 (old id 28299)
date added to LUP
2007-06-11 11:02:35
date last changed
2016-09-19 08:45:06
@phdthesis{82fc3dca-7153-49df-8add-e6eb1f1ace55,
  abstract     = {Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae<br/><br>
<br/><br>
The frequencies of females, hermaphrodites and partially male-sterile (PMS) genets of Glechoma hederacea were estimated in natural populations in S Sweden. The frequency of females and PMS genets in natural populations varied from 0 to 100%. The temporal and spatial variation in stamen fertility in PMS genets was studied in the field and in cultivation. Hermaphrodite flowers were self-compatible, seed production was found to be pollen limited and the clonal structure of the species usually caused a reduction in seed set in females. Hermaphrodite and PMS clones were usually larger than female clones and more heterozygous. Disomic inheritance of duplicated loci was found in this tetraploid species, and segregation ratios for allozymes conformed to Mendelian expectation. Allozymes were used to establish multilocus genotypes in seven populations in S Sweden and three populations in the S Czech Republic. Clonal diversity in an area of c. 100 m2 was greatest in an ephemeral population (PD i.e. proportion of distinguished genets = 0.98) and lowest in more stable habitats (PD = 0.01). Little evidence of intermingling of different genets was found.},
  author       = {Widén, Marie},
  keyword      = {Systematisk botanik,chemotaxonomy. Physiology of nonvascular plants,phytogeography,morphology,taxonomy,Systematic botany,clonal structure,isoloci,disomic inheritance,genetic diversity,polyploidy,male sterility,sex expression,pollen limitation,sexual reproduction,gynodioecy,Glechoma hederacea,Lamiaceae,taxonomi,morfologi,kemotaxonomi. Växters fysiologi (inte kärlväxter).},
  language     = {eng},
  pages        = {113},
  publisher    = {Systematic Botany},
  school       = {Lund University},
  title        = {Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae},
  year         = {1996},
}