scholarly journals Temporal Variation in Genetic Diversity and Population Structure of Burlina Cattle Breed

2014 ◽  
Vol 13 (2) ◽  
pp. 3091 ◽  
Author(s):  
Fabio Maretto ◽  
Martino Cassandro
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Temporal Variation ◽  
Cattle Breed

scholarly journals Short Communication: A Within- and Across-country Assessment of the Genomic Diversity and Autozygosity of South African and Eswatini Nguni Cattle

2021 ◽  
Author(s):  
Simon Frederick Lashmar ◽  
Carina Visser ◽  
Moses Okpeku ◽  
Farai Catherine Muchadeyi ◽  
Ntanganedzeni Olivia Mapholi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Standard Deviation ◽  
Cattle Breed ◽  
Principal Component ◽  
Genomic Diversity ◽  
Potential Threat ◽  
Inbreeding Coefficients ◽  
Agroecological Zones ◽  
Nguni Cattle

Abstract In southern Africa, the Nguni cattle breed is classified as an indigenous and transboundary animal genetic resource that manifests unique adaptation abilities across distinct agroecological zones. The genetic integrity of various ecotypes is under potential threat due to both indiscriminate crossbreeding and uncontrolled inbreeding. The aim of this study was to assess the genetic diversity and autozygosity that exists both across countries (ES: eSwatini; SA: South Africa) and within-country (SA), between purebred stud animals (SA-S) and research herds (SA-R). Subsets of 96 ES, 96 SA-S and 96 SA-R genotyped for 40 930 common SNPs were used to study inbreeding, runs of homozygosity (ROH) and heterozygosity (ROHet) profiles as well as population structure. The highest proportion (0.513) of the 3 595 ROH was <4Mb in length, while the majority (0.560) of the 4 409 ROHet segments fell within the 0.5-1Mb length category. Inbreeding coefficients indicated low inbreeding (FROH range: 0.025 for SA-S to 0.029 for SA-R). Principal component (PCA) and population structure (K=5) analyses illustrated genomic distinctiveness between SA and ES populations, greater admixture for SA-R (mean±standard deviation proportion shared=0.631±0.353) compared to SA-S (mean±standard deviation proportion shared=0.741±0.123), and three subpopulations for ES. Overall, results illustrated that genetic distinctiveness in the Nguni resulted from both geographic isolation and exposure to different production strategies. Although no impending threat to genetic diversity was observed, further loss should be monitored to prevent endangerment of unique and beneficial indigenous resources.

Temporal variation of the population structure and genetic diversity of Farfantepenaeus notialis assessed by allozyme loci

2005 ◽  
Vol 14 (10) ◽  
pp. 2933-2942 ◽  
Author(s):  
AYMEE ROBAINAS BARCIA ◽  
GEORGINA ESPINOSA LOPEZ ◽  
DAMIR HERNANDEZ ◽  
ERIK GARCIA-MACHADO
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Temporal Variation ◽  
Allozyme Loci

Genetic diversity and population structure of Populus yunnanensis revealed by SSR markers

2020 ◽  
Vol 52 (6) ◽  
Author(s):  
Anpei Zhou ◽  
Dan Zong ◽  
Peihua Gan ◽  
Yao Zhang ◽  
Dan Li ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Ssr Markers

Genetic diversity and population structure of Bretschneidera sinensis, an endangered species

2014 ◽  
Vol 21 (6) ◽  
pp. 723-731
Author(s):  
Xu Gangbiao ◽  
Liang Yan ◽  
Jiang Yan ◽  
Liu Xiongsheng ◽  
Hu Shangli ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Endangered Species

EST-SSR Genetic Diversity and Population Structure of Tea Landraces and Developed Cultivars (Lines) in Zhejiang Province, China

2010 ◽  
Vol 36 (5) ◽  
pp. 744-753 ◽  
Author(s):  
Ting-Ting QIAO ◽  
Chun-Lei MA ◽  
Yan-Hua ZHOU ◽  
Ming-Zhe YAO ◽  
Rao LIU ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Zhejiang Province

Genetic Diversity and Population Structure of Germplasm Resources in Sesame (Sesamum indicum L.) by SSR Markers

2013 ◽  
Vol 38 (12) ◽  
pp. 2286-2296 ◽  
Author(s):  
Wen-Di YUE ◽  
Li-Bin WEI ◽  
Ti-De ZHANG ◽  
Chun LI ◽  
Hong-Mei MIAO ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Ssr Markers ◽  
Sesamum Indicum ◽  
Germplasm Resources
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