Mating system and genetic differentiation inDasypyrum villosum (Poaceae) in Italy

Abstract Evaluation of patterns of pollen dispersal, mating systems, population fitness, genetic diversity and differentiation in restoration and remnant plant populations can be useful in determining how well restoration activities have achieved their objectives. We used molecular tools to assess how well restoration objectives have been met for populations of Banksia media in the biodiversity hotspot of south-west Western Australia. We characterized patterns of pollen dispersal within, and pollen immigration into, two restoration populations. We compared mating system parameters, population fitness via seed weight, genetic diversity and genetic differentiation for restoration and associated reference remnant populations. Different patterns of pollen dispersal were revealed for two restoration sites that differed in floral display, spatial aggregation of founders and co-planted species. Proximity to remnant native vegetation was associated with enhanced immigration and more short-range pollen dispersal when other population variables were constant. Greater seed weights at remnant compared to restoration populations were not related to outcrossing rate. Equivalent mating system and genetic diversity parameters and low to moderate levels of genetic differentiation between restoration and remnant populations suggest pollinator services have been restored in genetically diverse restoration populations of local provenance B. media as early as four years from planting.

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THE INFLUENCE OF DISPERSAL PATTERNS AND MATING SYSTEM ON GENETIC DIFFERENTIATION WITHIN AND BETWEEN POPULATIONS OF THE RED HOWLER MONKEY (ALOUATTA SENICULUS )

Evolution ◽

10.1111/j.1558-5646.1992.tb00623.x ◽

1992 ◽

Vol 46 (4) ◽

pp. 1112-1128 ◽

Cited By ~ 4

Author(s):

Theresa R. Pope

Keyword(s):

Genetic Differentiation ◽

Mating System ◽

Howler Monkey ◽

Alouatta Seniculus ◽

Dispersal Patterns ◽

Red Howler

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Genetic Diversity, Mating System and Systematic Relationships in Two Red Mahoganies, Eucalyptus pellita and E. scias

Australian Journal of Botany ◽

10.1071/bt9960157 ◽

1996 ◽

Vol 44 (2) ◽

pp. 157 ◽

Cited By ~ 14

Author(s):

APN House ◽

JC Bell

Keyword(s):

Genetic Diversity ◽

Genetic Differentiation ◽

Mating System ◽

Papua New Guinea ◽

Isozyme Variation ◽

Irian Jaya ◽

Eucalyptus Pellita ◽

Allelic Differences ◽

Cape York ◽

Systematic Relationships

Isozyme variation in two closely related red mahoganies (Eucalyptus pellita F. Muell. and E. scias L.A.S.Johnson and K.D.Hill) was examined in 17 populations of E. pellita from Australia, Papua New Guinea and Indonesia and 8 of E. scias (including all 3 subspecies) from south-eastern coastal Australia. Measures of genetic diversity and relationships between species and subspecies were based on 15 variable loci. Both E. pellita and E. scias had moderately high levels of genetic diversity, comparable to other similarly distributed species. Most genetic diversity within each species was found within populations (80% in E. pellita and 83% in E. scias). There were substantial allelic differences between the species at several loci; the populations clustered into groups corresponding to the two species. Yet genetic differentiation between the two species was relatively low, and the three subspecies of E. scias were not well separated. Outcrossing rates in E. pellita are variable, with low rates (<50%) measured in populations from Irian Jaya and Cape York Peninsula, and 73% in a population from northeast Queensland.

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Assessing the genetic structure of Oryza glumaepatula populations with isozyme markers

Brazilian Archives of Biology and Technology ◽

10.1590/s1516-89132008000500001 ◽

2008 ◽

Vol 51 (5) ◽

pp. 873-882 ◽

Cited By ~ 4

Author(s):

Elizabeth Ann Veasey ◽

Daruska Cardin ◽

Rainério Meireles Silva ◽

Eduardo de Andrade Bressan ◽

Roland Vencovsky

Keyword(s):

Genetic Diversity ◽

Genetic Structure ◽

Genetic Differentiation ◽

Mating System ◽

Outcrossing Rate ◽

Structure Parameters ◽

Mato Grosso ◽

Isozyme Markers ◽

Self Fertilization ◽

Oryza Glumaepatula

To assess the genetic diversity and genetic structure parameters, nine populations of Oryza glumaepatula from the Amazon biome, four from the Pantanal biome, and one collected at Rio Xingu, Mato Grosso, totaling 14 populations and 333 individuals were studied with isozyme markers. Six loci were evaluated showing a moderate allozyme variability (A = 1.21, P = 20.7%, Ho = 0.005, He = 0.060). The populations from the Pantanal biome showed higher diversity levels than the Amazon biome. High genetic differentiation among the populations, expected for self-fertilizing species, was observed (F ST=0.763), with lower differentiation found among the Pantanal populations (F ST=0.501). The average apparent outcrossing rate was higher for the Pantanal populations (t a = 0.092) than for the Amazonian populations (t a = 0.003), while the average for the 14 populations was 0.047, in accordance with a self-fertilization mating system.

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