Phenotypic diversity of tetraploid wheat landraces from northern and north-central regions of Ethiopia

Hereditas ◽  
2004 ◽  
Vol 124 (2) ◽  
pp. 165-172 ◽  
Author(s):  
E. Bechere ◽  
G. Belay ◽  
D. Mitiku ◽  
A. Merker
Keyword(s):  
Phenotypic Diversity ◽  
Tetraploid Wheat ◽  
North Central ◽  
Central Regions ◽  
Wheat Landraces

scholarly journals Exposure of Domestic Cats to Three Zoonotic Bartonella Species in the United States

Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 354
Author(s):  
Lynn M. Osikowicz ◽  
Kalanthe Horiuchi ◽  
Irina Goodrich ◽  
Edward B. Breitschwerdt ◽  
Bruno Chomel ◽  
...  
Keyword(s):  
New England ◽  
The United States ◽  
Severe Illness ◽  
Domestic Cats ◽  
Bartonella Species ◽  
Serum Samples ◽  
North Central ◽  
Middle Atlantic ◽  
South Central ◽  
Central Regions

Cat-associated Bartonella species, which include B. henselae, B. koehlerae, and B. clarridgeiae, can cause mild to severe illness in humans. In the present study, we evaluated 1362 serum samples obtained from domestic cats across the U.S. for seroreactivity against three species and two strain types of Bartonella associated with cats (B. henselae type 1, B. henselae type 2, B. koehlerae, and B. clarridgeiae) using an indirect immunofluorescent assay (IFA). Overall, the seroprevalence at the cutoff titer level of ≥1:64 was 23.1%. Seroreactivity was 11.1% and 3.7% at the titer level cutoff of ≥1:128 and at the cutoff of ≥1:256, respectively. The highest observation of seroreactivity occurred in the East South-Central, South Atlantic, West North-Central, and West South-Central regions. The lowest seroreactivity was detected in the East North-Central, Middle Atlantic, Mountain, New England, and Pacific regions. We observed reactivity against all four Bartonella spp. antigens in samples from eight out of the nine U.S. geographic regions.

scholarly journals Wheat in the Mediterranean revisited – tetraploid wheat landraces assessed with elite bread wheat Single Nucleotide Polymorphism markers

BMC Genetics ◽  
2014 ◽  
Vol 15 (1) ◽  
pp. 54 ◽  
Author(s):  
Hugo R Oliveira ◽  
Jenny Hagenblad ◽  
Matti W Leino ◽  
Fiona J Leigh ◽  
Diane L Lister ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphism ◽  
Bread Wheat ◽  
Tetraploid Wheat ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide ◽  
Wheat Landraces ◽  
The Mediterranean

Performance of Ethiopian tetraploid wheat landraces at their collection sites

Euphytica ◽  
1993 ◽  
Vol 71-71 (3) ◽  
pp. 221-230 ◽  
Author(s):  
Tesfaye Tesemma ◽  
H. C. Becker ◽  
G. Belay ◽  
D. Mitiku ◽  
E. Bechere ◽  
...  
Keyword(s):  
Tetraploid Wheat ◽  
Wheat Landraces ◽  
Collection Sites

Diversity of Ethiopian tetraploid wheat germplasm: breeding opportunities for improving grain yield potential and quality traits

2009 ◽  
Vol 7 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Yifru Teklu ◽  
Karl Hammer
Keyword(s):  
Total Variation ◽  
Phenotypic Diversity ◽  
Diversity Index ◽  
Tetraploid Wheat ◽  
Principal Component ◽  
Diversity Indices ◽  
Yield Potential ◽  
Wheat Improvement ◽  
Geographical Regions ◽  
Diversity Studies

In this paper, Shannon–Weaver diversity indices were employed to examine the phenotypic diversity in 271 Ethiopian tetraploid wheat accessions in relation to characters, regions of origin and altitude. Moreover, review of genetic diversity studies in Ethiopian tetraploid wheat was made to explore breeding opportunities. The diversity index varied widely across regions. Among the four altitudinal classes, the highest (0.72) and lowest (0.61) mean diversity indices were observed in altitude classes II and IV, respectively. The diversity index (H′) showed that most traits are polymorphic. The partitioning of the total phenotypic diversity into within- and among-region diversity indicated that 71% of the total variation was attributed to the within-region diversity. Principal component analysis was computed to examine the regional and altitudinal patterns of variation. On regional bases, the first four axes, whose eigenvalues are greater than 1, explained about 82% of the observed phenotypic diversity in the 271 tetraploid wheat accessions. On altitudinal bases, however, only the first two principal components explained 89.7% of the total variation. In general, phenotypic diversity showed considerable differences for each trait in different geographical regions and altitudinal classes which could be utilized in wheat improvement programmes. Breeding opportunities and strategies are suggested.

scholarly journals Evaluation of some effectiveness elements of the pig breeding industry in Bulgaria, through cluster analysis

2019 ◽  
Vol 35 (1) ◽  
pp. 25-33
Author(s):  
Ivelina Zapryanova
Keyword(s):  
Cluster Analysis ◽  
Central Region ◽  
Western Region ◽  
North Central Region ◽  
North Central ◽  
The North ◽  
South Central ◽  
North Eastern ◽  
Central Regions ◽  
North Western

An evaluation was made of the effectiveness elements of the pig breeding industry in Bulgaria in the period 2001-2016, through cluster analysis. The studied period was divided in 3 subperiods, each one with three similar groups (clusters). Through application of cluster analysis, the proximity of the different administration regions in the country was defined in accordance with certain indicators of the pig breeding effectiveness. It was found that in the first cluster for the period 2001-2006 fall North-Western and South-Western region. The North-Eastern and North-Central region form the second cluster. The South-Eastern and South-Central region fall mainly into the third cluster. In the first cluster for the period 2007-2011, the North-Western, South-Western and South-Central regions have a priority with the lowest number of sold animals. The North-Eastern and the North-Central region, forming a third cluster, remain with the highest effectiveness of the pig farming. After the end of 2013 an aggregation of the sector began. For the period 2012-2016, the second cluster is formed from three regions - North-Western, South-Western, and South-Central in 2013.

scholarly journals Regional trends indicators finger dermatoglyphics among modern Ukrainians

2018 ◽  
pp. 5-12 ◽  
Author(s):  
V.D. Mishalov ◽  
О.А. Serebrennikova ◽  
L.А. Klimas ◽  
V.І. Gunas
Keyword(s):  
Local Level ◽  
Local Population ◽  
Statistical Processing ◽  
Male Population ◽  
North Central ◽  
Left Hand ◽  
Regional Trends ◽  
Central Regions ◽  
The Right ◽  
Quantitative Indicators

The variability of fingerprints is widely used to identify a person in criminology, as adiagnostic-prognostic marker system in medicine and in the study of multi-vectoredethnogenetic processes in population surveys that cover different regions of the state.The purpose of the study is to outline the local structure of the male population ofUkraine by analyzing the indicators of digital dermatoglyphics for information on the vectorof evolution of the local population. Dermatoglyphic study was performed using H.Cummins and Ch. Midlo for 400 practically healthy men from different administrative-territorial regions of Ukraine. Statistical processing of the obtained results was carried outin the package STATISTICA 6.1 using nonparametric methods. High heterogeneity wasestablished on the basis of qualitative and quantitative indicators of signs of digitaldermatoglyphics among the following administrative-territorial groups: between theinhabitants of central and southern (22.22% of indicators), central and eastern (20.37% ofindicators) of central and western (15.74%), northern and southern (17.59% of indicators),northern and western (16.67% of indicators), northern and eastern (15.74% of indicators),western and eastern (12.04% of indicators) and southern and eastern (12.04% ofindicators) of the regions of Ukraine. Significant homogeneity was detected in terms ofqualitative and quantitative indicators of signs of digital dermatoglyphics inherent in men,residents of the northern and central regions of Ukraine (differences are recorded at 7(6.48%) indicators, as well as men living in the southern and western regions of thecountry (differences are recorded for 10-9.26% of indicators of only qualitativecharacteristics.) The obtained results allowed to distinguish two dermatological complexeson the territory of Ukraine: local north-central and local south-western. High taxonomicthe value for intra-population differentiation of the local level have: types of patternswith high intensity comb and the capacity of the pattern, especially the III and IV fingersof the right hand and I and II fingers of the left hand

Association between Grain Size, Shape and Thousand Kernel Weight in Pakistani Wheat Landraces

2021 ◽  
Vol 5 (1) ◽  
pp. 25-37
Author(s):  
Sumaira Salah-ud-din ◽  
Alvina Gul ◽  
Rabia Amir ◽  
Muhammad Jamil ◽  
Hadi Alipour ◽  
...  
Keyword(s):  
Grain Size ◽  
Phenotypic Diversity ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Kernel Size ◽  
Seed Shape ◽  
Thousand Kernel Weight ◽  
Size And Shape ◽  
High Throughput Method ◽  
Wheat Landraces

Wheat (Triticum aestivum. L) grain size is considered to be one of the main criteria of yield constituents by wheat breeders. In order to detect phenotypic diversity and relationship between thousand kernel weight, a collection of 204 landraces from different parts of Pakistan was planted across two years (2012-2014). High throughput method based on seed imaging was used to measure the kernel size and shape. The correlation analysis revealed significant positive correlation between thousand kernel weight (TKW) with perimeter of vertical (PV), thickness (T), area of vertical (AV), area of horizontal (AH), perimeter of horizontal (PH), width (W) and Length (L). Bioplot showed that accessions with high seed shape parameters have higher TKW. By taking TKW as a dependent variable multiple regression analysis was performed. Regression summary indicated that 31% of the variations in TKW are explained by the independent variables. It was shown that grain thickness, length and width are most important for predicting TKW. Based on image analysis this study provides useful information about the relationship between TKW, kernel size and shape in Pakistani wheat landraces that may help to improve grain weight in a breeding program.

scholarly journals Environment, agro-system and quality of food production in Italy

2017 ◽  
Vol 11 ◽  
Author(s):  
Nicola Dal Ferro ◽  
Maurizio Borin
Keyword(s):  
Regional Distribution ◽  
Alternative Agriculture ◽  
North Central ◽  
The North ◽  
Central Regions ◽  
Landscape Preservation ◽  
Quality Of Food ◽  
The One ◽  
Agriculture Systems

In the context of increasing attention towards sustainable and high quality food products, Italy plays a key role in Europe due to its embedded territorial vocation for locally produced food and alternative agriculture systems helping biodiversity and landscape preservation. Here, we report an overview of Italian agriculture by analysing organic farming (OF) and geographical indication (GI) systems and their contribution to the national agriculture. Land use data highlight that OF and GI contribute around 10% to the utilised agriculture area (UAA), with relevant distinctions in terms of regional distribution. While GIs are mostly in the north-central regions (8.5%), OF products are most frequent in the south and on the islands (5.0% of UAA). This trend was observed on the one hand in Trentino-South Tirol, Veneto and Friuli-Venezia Giulia (%UAA GI/%UAA OF > 5.9), and on the other in Calabria, Basilicata and Sicily (%UAA GI/%UAA OF < 0.1). Similarly, both systems are widespread in less-favoured areas in terms of agricultural intensification, providing support to preserve agro-systems and reduce land abandonment.

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