Spatial analysis of genetic diversity in a comprehensive collection of the native grass Bromus auleticus Trinius (ex Nees) in Uruguay

2017 ◽  
Vol 72 (4) ◽  
pp. 723-733 ◽  
Author(s):  
F. Condón ◽  
M. Jaurena ◽  
R. Reyno ◽  
C. Otaño ◽  
F. A. Lattanzi
Keyword(s):  
Genetic Diversity ◽  
Spatial Analysis ◽  
Native Grass ◽  
Comprehensive Collection ◽  
Bromus Auleticus

scholarly journals European Vintage tomatoes galore: a result of farmers combinatorial assorting/swapping of a few diversity rich loci

2021 ◽  
Author(s):  
Jose Blanca ◽  
Clara Pons ◽  
Javier Montero-Pau ◽  
David Sanchez-Matarredona ◽  
Peio Ziarsolo ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Morphological Traits ◽  
Balancing Selection ◽  
Genotyping By Sequencing ◽  
Polymorphic Loci ◽  
Comprehensive Collection ◽  
Low Genetic Diversity ◽  
Genetic Groups ◽  
History Of ◽  
Modern Varieties

A comprehensive collection of 1,254 tomato accessions corresponding to European heirlooms and landraces, together with modern varieties, early domesticates and wild relatives, were analyzed by genotyping by sequencing. A continuous genetic gradient between the vintage and modern varieties was observed. European vintage tomatoes displayed very low genetic diversity, with only 298 loci out of 64,943 variants being polymorphic at the 95% threshold. European vintage tomatoes could be classified in several genetic groups. Two main clusters consisting of Spanish and Italian accessions showed a higher genetic diversity than the rest varieties, suggesting that these regions might be independent secondary centers of diversity and with a different history. Other varieties seem to be the result of a more recent complex pattern of migrations and hybridizations among the European regions. Several polymorphic loci were associated in a GWAS with fruit morphological traits in the European vintage collection, and the corresponding alleles were found to contribute to the distinctive phenotypic characteristic of the genetic varietal groups. The few highly polymorphic loci associated with morphological traits in an otherwise diversity-poor genome suggests a history of balancing selection, in which tomato farmers maintained the morphological variation by applying a high selective pressure within different varietal types.

scholarly journals Mapping the Genetic Diversity of <i>Castanea sativa</i>: Exploiting Spatial Analysis for Biogeography and Conservation Studies

2016 ◽  
Vol 08 (02) ◽  
pp. 248-259 ◽  
Author(s):  
Francesca Chiocchini ◽  
Claudia Mattioni ◽  
Paola Pollegioni ◽  
Ilaria Lusini ◽  
Maria Angela Martín ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Spatial Analysis ◽  
Castanea Sativa

scholarly journals Delineation of beech provenance regions in Serbia by spatial analysis of genetic diversity

Genetika ◽  
2012 ◽  
Vol 44 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Vladan Ivetic ◽  
Vasilije Isajev ◽  
Ana Nikolic ◽  
Milun Krstic ◽  
Danijela Ristic ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Spatial Analysis ◽  
Rapd Markers ◽  
Natural Populations ◽  
Genetic Component ◽  
Forest Trees ◽  
Practical Application ◽  
Spatial Component ◽  
Geographical Position

The results of spatial analysis of genetic diversity have practical application in the definition and delineation of regional provenances of forest trees. Research in this paper, was based on the material from 27 natural populations of beech in Serbia. The genetic component of the research is based on the analysis of RAPD markers from bulk samples, using 28 primers. The spatial component of the research is based on the geographical position of the studied populations. Grouping of the studied populations in the regions, as well as their separation, was performed using the Monmonier?s algorithm of maximum differences. To visualize the results and mapping the regions of beech provenances in Serbia, GIS was used, with database included the results of this study.

Spatial analysis of genetic diversity as a tool for plant conservation

2003 ◽  
Vol 113 (3) ◽  
pp. 351-365 ◽  
Author(s):  
Adrián Escudero ◽  
José M Iriondo ◽  
M.Elena Torres
Keyword(s):  
Genetic Diversity ◽  
Spatial Analysis ◽  
Plant Conservation

Genetic diversity and population structure of Eugenia dysenterica DC. (``cagaiteira'' – Myrtaceae) in Central Brazil: Spatial analysis and implications for conservation and management

2003 ◽  
Vol 4 (6) ◽  
pp. 685-695 ◽  
Author(s):  
Mariana Pires de Campos Telles ◽  
Alexandre Siqueira Guedes Coelho ◽  
Lázaro José Chaves ◽  
José Alexandre Felizola Diniz-Filho ◽  
Fabrizio D'Ayala Valva
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Spatial Analysis ◽  
Central Brazil ◽  
Eugenia Dysenterica ◽  
Conservation And Management

scholarly journals Mapping Genetic Diversity of Cherimoya (Annona cherimola Mill.): Application of Spatial Analysis for Conservation and Use of Plant Genetic Resources

PLoS ONE ◽  
2012 ◽  
Vol 7 (1) ◽  
pp. e29845 ◽  
Author(s):  
Maarten van Zonneveld ◽  
Xavier Scheldeman ◽  
Pilar Escribano ◽  
María A. Viruel ◽  
Patrick Van Damme ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Spatial Analysis ◽  
Genetic Resources ◽  
Plant Genetic Resources ◽  
Annona Cherimola

scholarly journals Fragmentación y expansión demográfica en las poblaciones mexicanas de Pinus ayacahuite var. ayacahuite

2017 ◽  
pp. 25
Author(s):  
Alejandra Ortíz-Medrano ◽  
Alejandra Moreno-Letelier ◽  
Daniel Piñero
Keyword(s):  
Genetic Diversity ◽  
Spatial Analysis ◽  
Cold Period ◽  
Early Pleistocene ◽  
Phylogeographic Structure ◽  
Chloroplast Microsatellites ◽  
Nested Clade Analysis ◽  
Analysis Of Molecular Variance ◽  
Molecular Variance ◽  
Mexican Populations

This study explores the phylogeographic structure and the demographic hi story of the Mexican populations of Pinus ayacahuite var. ayacahuite. Three chloroplast microsatellites were amplified in 198 individuals from 14 populations. Twelve haplotypes were found and an average genetic diversity (He) of 0.705. Two maximally differentiated groups were determined with a spatial analysis of molecular variance. A significant correlation was detected between the genetic and geographic distances between these two groups, but not within them. A significant phylogeographic structure was found, produced by the existence of the two groups. Two demographic expansions were detected, the first in the entire species, the second only in the southernmost populations. Additionally, a nested clade analysis was pe1formed to complement our observations. The results showed that the Tehuantepec Isthmus was a corridor for species of temperate affinities in a cold period in early Pleistocene, and later acted as a barrier

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