scholarly journals Relationship between estimates of spatial and temporal, plasticity, genetic variability and between-population differentiation in Iris pumila

2003 ◽  
Vol 55 (1-2) ◽  
pp. 5P-6P ◽  
Author(s):  
Aleksej Tarasjev
Keyword(s):  
Genetic Variability ◽  
Population Differentiation ◽  
Iris Pumila

scholarly journals Genome-wide genetic diversity, population structure and admixture analysis in Eritrean Indigenous Cattle

2020 ◽  
Vol 49 (6) ◽  
pp. 1083-1092
Author(s):  
S Goitom ◽  
M.G. Gicheha ◽  
F.K. Njonge ◽  
N Kiplangat
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Genetic Variability ◽  
Population Differentiation ◽  
Principal Component ◽  
Vital Role ◽  
Group Method ◽  
Indigenous Cattle ◽  
Ecological Zones ◽  
Genome Wide

Indigenous cattle play a vital role in subsistence and livelihood of pastoral producers in Eritrea. In order to optimally utilize and conserve these valuable indigenous cattle genetic resources, the need to carry out an inventory of their genetic diversity was recognized. This study assessed the genetic variability, population structure and admixture of the indigenous cattle populations (ICPs) of Eritrea using a genotype by sequencing (GBS) approach. The authors genotyped 188 animals, which were sampled from 27 cattle populations in three diverse agro-ecological zones (western lowlands, highlands and eastern lowlands). The genome-wide analysis results from this study revealed genetic diversity, population structure and admixture among the ICPs. Averages of the minor allele frequency (AF), observed heterozygosity (HO), expected heterozygosity (HE), and inbreeding coefficient (FIS) were 0.157, 0.255, 0.218, and -0.089, respectively. Nei’s genetic distance (Ds) between populations ranged from 0.24 to 0.27. Mean population differentiation (FST) ranged from 0.01 to 0.30. Analysis of molecular variance revealed high genetic variation between the populations. Principal component analysis and the distance-based unweighted pair group method and arithmetic mean analyses revealed weak substructure among the populations, separating them into three genetic clusters. However, multi-locus clustering had the lowest cross-validation error when two genetically distinct groups were modelled. This information about genetic diversity and population structure of Eritrean ICPs provided a basis for establishing their conservation and genetic improvement programmes. Keywords: genetic variability, molecular characterization, population differentiation

Ontogeny of flower parts on naturally growing Iris pumila clones: Implications for population differentiation and phenotypic plasticity studies

2012 ◽  
Vol 48 (4) ◽  
pp. 468-472
Author(s):  
N. Barišić Klisarić ◽  
S. Avramov ◽  
D. Miljković ◽  
U. Živković ◽  
A. Tarasjev
Keyword(s):  
Phenotypic Plasticity ◽  
Population Differentiation ◽  
Iris Pumila

scholarly journals GENETIC VARIABILITY AND POPULATION DIFFERENTIATION OF OPISTHORCHIS FELINEUS (TREMATODA) FROM WEST SIBERIA RIVERS

2012 ◽  
Vol 10 (3) ◽  
pp. 10-16
Author(s):  
Oksana N Zhigileva ◽  
Daria V Zenovkina ◽  
Tatyana A Zamyatina
Keyword(s):  
Population Structure ◽  
Genetic Variability ◽  
Dna Markers ◽  
Population Differentiation ◽  
Western Siberia ◽  
West Siberia ◽  
Cyprinid Fish ◽  
Intermediate Hosts ◽  
Opisthorchis Felineus ◽  
Low Level

Genetic variability in Opisthorchis felineus from 6 Western Siberia rivers was studied using allozyme and multilocus DNA markers. Genetic subdivision of populations and the spatial genetic variability in O. felineus maritas were found to be the same when using two methods of analysis, but differed from these indices in metacercariae. Metacercariae from ide, dace and roach were not genetically different, indicating the absence of hostal subpopulations of the parasite. Low level of O. felineus genetic variability is not consistent with a pronounced population structure of intermediate hosts — Cyprinid fish.

scholarly journals Lead and nickel accumulation in Iris pumila: Consideration of its usefulness as a potential bioindicator in the natural protected area of Deliblato Sands, Serbia

2014 ◽  
Vol 66 (1) ◽  
pp. 331-336 ◽  
Author(s):  
Danijela Miljkovic ◽  
S. Avramov ◽  
Vukica Vujic ◽  
L. Rubinjoni ◽  
Barisic Klisaric ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Protected Areas ◽  
Block Design ◽  
Traffic Pollution ◽  
Urban Habitat ◽  
Natural Habitats ◽  
Urban Location ◽  
Sib Families ◽  
Iris Pumila ◽  
Significant Block

In this work, we investigated the suitability of the threatened species, Iris pumila L., as a possible bioindicator of traffic pollution in its natural habitats (mostly protected areas and natural reserves). We examined its potential to accumulate lead (Pb) and nickel (Ni) in polluted habitats, and the genetic variability for this capability, since it is an important facet of bioindicator suitability. We estimated the concentrations of Pb and Ni in the leaves of 17 I. pumila clones (genotypes) grown in one of their natural habitats, the unpolluted semi-arid habitat of the protected Deliblato Sands Special Natural Reserve, and in the leaves of 18 Iris pumila full-sib families grown in an experimental plot in a heavily polluted urban location in Belgrade, Serbia. Comparison of the contrasting habitats by one-way ANOVA analysis showed that both Pb and Ni concentrations were significantly higher (six-fold) in the I. pumila leaves collected from plants grown in the polluted urban habitat. Two-way ANOVA (randomized block design) analysis performed on the full-sib families grown in the urban location failed to detect significant genetic variation for metal accumulation in I. pumila leaves. A significant block effect on the concentration of Ni in leaves was detected, indicating responsiveness to microenvironmental variability. These results suggest that I. pumila can serve as a good indicator of traffic pollution in protected areas. The response is stable since genetic variability of I. pumila populations does not appear to influence its role as an indicator greatly.

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