scholarly journals Evaluating restoration outcomes through assessment of pollen dispersal, mating system and genetic diversity

2020 ◽  
Author(s):  
Melissa A Millar ◽  
David J Coates ◽  
Margaret Byrne ◽  
Siegfried L Krauss ◽  
Justin Jonson ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mating System ◽  
Pollen Dispersal

scholarly journals Pollen dispersal, pollen immigration, mating and genetic diversity in restoration of the southern plains Banksia

2020 ◽  
Vol 129 (4) ◽  
pp. 773-792
Author(s):  
Melissa A Millar ◽  
David J Coates ◽  
Margaret Byrne ◽  
Siegfried L Krauss ◽  
Matthew R Williams ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Mating System ◽  
Mating Systems ◽  
Pollen Dispersal ◽  
Floral Display ◽  
Molecular Tools ◽  
Plant Populations ◽  
Southern Plains ◽  
Population Fitness

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.

Estimating genetic diversity, mating system and pollen dispersal to inform ex situ conservation of tree Genipa americana L.

2021 ◽  
pp. 1-11
Author(s):  
Marília Freitas de Vasconcelos Melo ◽  
Alexandre Magno Sebbenn ◽  
Bruno Cesar Rossini ◽  
Ana Veruska Cruz da Silva Muniz ◽  
Carlos Jose Rodrigues ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mating System ◽  
Pollen Dispersal ◽  
Ex Situ ◽  
Fixation Index ◽  
Lower Probability ◽  
Dispersal Pattern ◽  
Long Distance ◽  
Dioecious Species ◽  
Seed Collection

Abstract Using microsatellite loci, we assessed the mating system and genetic diversity of the dioecious tropical tree Genipa americana in a natural population (NP) and a progeny test (PT). For NP, we also estimated the paternity correlation within and among fruits and mean pollen dispersal distance. As expected for dioecious species, all offspring originated from outcrossing (t = 1). Mating among relatives (1 − ts) and paternity correlation (rp) were variable among progenies (1 − ts = 0.03–0.19; rp = 0.04–0.40), but greater in NP than in PT. Fixation index (F) was generally significant and lower in adults than in offspring, indicating selection against inbred individuals. Paternity correlation was higher within (0.40) than among (0.26) fruits, indicating a lower effective number of pollen donors (Nep) within (2.5) than among (3.8) fruits. Due to the higher rp in NP, the effective size within progenies (Ne) was lower (2.69) than PT (3.27). The pollen dispersal pattern was strongly leptokurtic, suggesting long-distance pollen dispersal (mean of 179 m). The results show that both populations can be used for seed collection in environmental reforestation programmes; however, considering that PT is structured in maternal progenies, NP is more suitable for seed collection due to the lower probability of mating among related trees.

Genetic Diversity, Mating System, and Reproductive Output of Restored Melaleuca acuminata Populations are Comparable to Natural Remnant Populations

2019 ◽  
Vol 37 (4) ◽  
pp. 222-232 ◽  
Author(s):  
Melissa A Millar ◽  
Janet M Anthony ◽  
David J Coates ◽  
Margaret Byrne ◽  
Siegfried L Krauss ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mating System ◽  
Reproductive Output

Genetic diversity and the mating system in a fragmented population of Tsoongiodendron odorum

2013 ◽  
Vol 20 (6) ◽  
pp. 676-684 ◽  
Author(s):  
Wang Xia ◽  
Wang Jing ◽  
Jiang Jinghu ◽  
Kang Ming
Keyword(s):  
Genetic Diversity ◽  
Mating System ◽  
Fragmented Population

scholarly journals Genetic diversity and mating system of Copaifera langsdorffii (Leguminosae/Caesalpinioideae)

2013 ◽  
Vol 12 (1) ◽  
pp. 569-580 ◽  
Author(s):  
A. Gonela ◽  
A.M. Sebbenn ◽  
H.H. Soriani ◽  
M.A. Mestriner ◽  
C.A. Martinez ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mating System ◽  
Copaifera Langsdorffii

scholarly journals Study of genetic differences among Slovak Tsigai populations using microsatellite markers

2009 ◽  
Vol 54 (No. 10) ◽  
pp. 468-474 ◽  
Author(s):  
S. Kusza ◽  
E. Gyarmathy ◽  
J. Dubravska ◽  
I. Nagy ◽  
A. Jávor ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Genetic Distance ◽  
Microsatellite Markers ◽  
Mating System ◽  
Population Differentiation ◽  
Genetic Relationships ◽  
The Other ◽  
Potential Risks ◽  
Substantial Degree

In this study genetic diversity, population structure and genetic relationships of Tsigai populations in Slovakia were investigated using microsatellite markers. Altogether 195 animals from 12 populations were genotyped for 16 microsatellites. 212 alleles were detected on the loci. The number of identified alleles per locus ranged from 11 to 35. In the majority of the populations heterozygosity deficiency and potential risks of inbreeding could be determined. High values of <I>F</I><sub>ST</sub> (0.133) across all the loci revealed a substantial degree of population differentiation. The estimation of genetic distance value showed that the Slovak Vojin population was the most different from the other populations. The 12 examined populations were able to group into 4 clusters. With this result our aim is to help the Slovak sheep breeders to establish their own mating system, to avoid genetic loss and to prevent diversity of Tsigai breed in Slovakia.

Sign in / Sign up

Export Citation Format

Share Document