Monomorphism, Reduced Gene Flow, and Cleistogamy in Rare and Common Species of Lespedeza (Fabaceae)

Cole, Christopher T.; Biesboer, David D.

doi:10.1002/j.1537-2197.1992.tb14594.x

Cited by 37 publications

(25 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Additionally, the findings of higher genetic diversity among invasive L. cuneata populations in relation to native Lespedeza populations (Cole and Biesboer 1992;Sundberg et al 2002) are consistent with our finding that the invasive L. cuneata maintains an insect visitation rate eight to ten times that of the native Lespedeza species. This higher insect visitation rate suggests a higher degree of gene flow through pollination than its native congeners.…”

Section: Discussionsupporting

confidence: 90%

The invasive Lespedeza cuneata attracts more insect pollinators than native congeners in tallgrass prairie with variable impacts

2011

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 90%

The invasive Lespedeza cuneata attracts more insect pollinators than native congeners in tallgrass prairie with variable impacts

2011

View full text Add to dashboard Cite

“…Although all extant populations of L. helleri can be found within a 30 km radius in North Carolina, the species maintains relatively high levels of genetic variation. Comparative studies of congeneric species with differing ranges have frequently revealed lower levels of variation in the more narrowly distributed species, although this result has not been entirely consistent (Karron, 1987;Karron et al, 1988;Cole and Biesboer, 1992). Thus, the genetic diversity in this threatened species is about three times the mean genetic diversity found for endemic plants.…”

Section: Discussionmentioning

confidence: 89%

Genetic diversity and morphological differentiation in Liatris helleri (Asteraceae), a threatened plant species

Godt

Hamrick

1996

Biodivers Conserv

View full text Add to dashboard Cite

Liatris helleri (Asteraceae) is an insect-pollinated herbaceous perennial endemic to several high-elevation sites in the Blue Ridge Mountains of North Carolina. Allozymes were used to describe the genetic diversity and population structure in nine populations of this rare, federally listed species. Differences in leaf morphology were also examined for greenhouse-grown plants representing several populations. The proportion of the total genetic diversity found among populations, as indicated by the allozyme data, was 16%. Higher levels of population differentiation were found for differences in leaf shape; population of origin accounted for 37% of the variation in maximum leaf width, while families within populations accounted for 7%. In contrast to many endemic species, L. helleri maintains fairly high levels of genetic diversity. For the species, the percent polymorphic loci was 87.5, the average number of alleles at variable loci was 3.00 and the gene diversity was 0.276. Mean population values were percent polymorphic loci = 58.4, mean number of alleles per polymorphic locus = 2.59 and gene diversity = 0.219. The estimated gene flow was low (Nm = 0.85-1.32) and a relatively high correlation (r = 0.55; p < 0.005) was found between linear geographic and genetic distance. This suggests that the populations are partially isolated by distance, despite the limited range (<60km) of the species. We recommend that population distinctiveness be maintained in restoration efforts.

show abstract

“…However, this range is not unique among CH/CL species (e.g. Cole & Biesboer, 1992). The value of θ derived from the allozyme data (0.29) was significantly different from zero (Table 3), indicating that genetic differentiation occurred among the sampled populations.…”

Section: Resultsmentioning

confidence: 99%

Population genetic structure of the cleistogamous plant species Viola pubescens Aiton (Violaceae), as indicated by allozyme and ISSR molecular markers

2001

View full text Add to dashboard Cite

Few studies of genetic variation have focused on species that reproduce through both showy, chasmogamous (CH)¯owers and self-pollinated, cleistogamous (CL)¯owers. Using two dierent techniques, genetic variation was measured in six populations of Viola pubescens Aiton, a yellowowered violet found in the temperate forests of eastern North America. Results from eight allozyme loci showed that there was considerable genetic variation in the species, and population structuring was indicated by the presence of unique alleles and a h (F ST ) value of 0.29. High genetic variation was also found using ISSR (inter-simple sequence repeat) markers, and population structuring was again evident with unique bands. Viola pubescens appears to have a true mixed-mating system in which sel®ng through CL and CH¯owers contributes to population dierentiation, and outcrossing through CH¯owers increases genetic variation and gene¯ow among populations. Overall, allozyme and ISSR techniques yielded similar results, indicating that ISSR markers show potential for use in population genetic studies.

show abstract

Monomorphism, Reduced Gene Flow, and Cleistogamy in Rare and Common Species of Lespedeza (Fabaceae)

Cited by 37 publications

References 34 publications

The invasive Lespedeza cuneata attracts more insect pollinators than native congeners in tallgrass prairie with variable impacts

The invasive Lespedeza cuneata attracts more insect pollinators than native congeners in tallgrass prairie with variable impacts

Genetic diversity and morphological differentiation in Liatris helleri (Asteraceae), a threatened plant species

Population genetic structure of the cleistogamous plant species Viola pubescens Aiton (Violaceae), as indicated by allozyme and ISSR molecular markers

Contact Info

Product

Resources

About