61 research outputs found

    Integrating phenotypic evaluations with a molecular diversity assessment of an Ethiopian collection of common bean landraces

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    Understanding the organisation of genetic diversity in a crop species is a key element for both the conservation and utilisation of its genetic resources. In the case of common bean ( Phaseolus vulgaris L.), Ethiopia is one of the secondary centers of diversity of this species. Hence, this study sought to improve our understanding of genetic diversity of common bean by integrating morphological and agronomic evaluations with prior molecular diversity data from a collection of landrace accessions from different common bean growing regions of Ethiopia. The samples studied included 115 landraces, four standard varieties, and two control genotypes. Twenty agronomic traits and morphological descriptors were used to evaluate the accessions under field conditions. A Principal Component Analysis clearly separated the accessions into the Andean and Mesoamerican gene pools, with the first two axes explaining most of the variation. Step-wise discriminant and canonical correlation analyses, with all variables or only the morphological variables, enabled the identification of characters distinguishing accessions from the Andean/Mesoamerican gene pools, and their respective ecogeographic races. Data distinguishing racial and morphological traits were used to clarify the identities of five cluster groups, identified at STRUCTURE preset K = 5, in a preceding study. The three Andean cluster groups were shown to belong to two of the races in the gene pool, \u2018Nueva Granada\u2019 and \u2018Peru\u2019; while the two Mesoamerican groups were from the race \u2018Mesoamerica\u2019. By integrating the morphological and agronomic evaluation of an Ethiopian germplasm collection of common bean, initially performed just based on molecular characterisation, we were able to improve our understanding of the organisation of this diversity. Our results suggest extensive hybridisation between the Andean and Mesoamerican gene pools after introduction of common bean germplasm in Ethiopia.Connaitre l\u2019organisation de la diversit\ue9 g\ue9n\ue9tique sur une culture est un \ue9l\ue9ment important \ue0 la fois pour la conservation et l\u2019utilisation de ses ressources g\ue9n\ue9tiques. Dans le cas du haricot commun ( Phaseolus vulgaris L), l\u2019Ethiopie est l\u2019un des centres secondaires de la diversit\ue9 de l\u2019esp\ue8ce. Par cons\ue9quent, cette \ue9tude cherche \ue0 am\ue9liorer notre compr\ue9hension de la diversit\ue9 g\ue9n\ue9tique du haricot commun en int\ue9grant les \ue9valuations morphologique et agronomiques avec une \ue9valuation pr\ue9alable de la diversit\ue9 mol\ue9culaire d\u2019une collection de cultivars traditionnels venus de diff\ue9rentes r\ue9gions productrices du haricot commun de l\u2019Ethiopie. Les \ue9chantillons utilis\ue9s comprennent 115 cultivars traditionnels, quatre vari\ue9t\ue9s standards, et deux g\ue9notypes contr\uf4les. Vingt traits descripteurs agronomiques et morphologiques \ue9taientutilis\ue9s pour \ue9valuer les accessions dans des conditions de champ. Une analyse en composante principale a clairement s\ue9par\ue9 les accessions en des pools de g\ue8nes Andins et M\ue9soam\ue9ricains avec les deux premiers axes expliquant la plus grande variation. Les analyses discriminante par \ue9tapes la corr\ue9lation canonique, avec toutes les variables ou seule avec les variables morphologiques, ont permis l\u2019identification des caract\ue8res discriminant les accessions des pools de g\ue8nes Andins et M\ue9soam\ue9ricains, et leurs races Eco g\ue9ographiques respectives. Les donn\ue9es discriminant les traits raciaux et morphologiques \ue9taient utilis\ue9s pour clarifier les identit\ue9s des cinq classes, identifi\ue9es \ue0 la configuration pr\ue9finie K= 5, dans l\u2019\ue9tude pr\ue9c\ue9dente. Les trois groupes de classes Andines appartiennent \ue0 deux races dans le pool de g\ue8nes, \u2018Nueva Granada\u2019 et \u2018Peru\u2019\ua0; alors que les groupes M\ue9soam\ue9ricains \ue9taient de la race \u2018M\ue9soam\ue9rica\u2019. En int\ue9grant l\u2019\ue9valuation morphologique et agronomique de la collection du germoplasm du haricot commun Ethiopien, initialement conduit juste sur la base de la caract\ue9risation mol\ue9culaire, nous avions pu am\ue9liorer notrecompr\ue9hension de l\u2019organisation de cette diversit\ue9. Nos r\ue9sultats sugg\ue8rent une hybridation extensive entre les pools de g\ue8nes Andins et M\ue9soam\ue9ricains apr\ue8s une introduction du germoplasm du haricot commun de l\u2019Ethiopie

    The state of the Martian climate

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    60°N was +2.0°C, relative to the 1981–2010 average value (Fig. 5.1). This marks a new high for the record. The average annual surface air temperature (SAT) anomaly for 2016 for land stations north of starting in 1900, and is a significant increase over the previous highest value of +1.2°C, which was observed in 2007, 2011, and 2015. Average global annual temperatures also showed record values in 2015 and 2016. Currently, the Arctic is warming at more than twice the rate of lower latitudes

    The burden of unintentional drowning: Global, regional and national estimates of mortality from the Global Burden of Disease 2017 Study

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    __Background:__ Drowning is a leading cause of injury-related mortality globally. Unintentional drowning (International Classification of Diseases (ICD) 10 codes W65-74 and ICD9 E910) is one of the 30 mutually exclusive and collectively exhaustive causes of injury-related mortality in the Global Burden of Disease (GBD) study. This study's objective is to describe unintentional drowning using GBD estimates from 1990 to 2017. __Methods:__ Unintentional drowning from GBD 2017 was estimated for cause-specific mortality and years of life lost (YLLs), age, sex, country, region, Socio-demographic Index (SDI) quintile, and trends from 1990 to 2017. GBD 2017 used standard GBD methods for estimating mortality from drowning. __Results:__ Globally, unintentional drowning mortality decreased by 44.5% between 1990 and 2017, from 531 956 (uncertainty interval (UI): 484 107 to 572 854) to 295 210 (284 493 to 306 187) deaths. Global age-standardised mortality rates decreased 57.4%, from 9.3 (8.5 to 10.0) in 1990 to 4.0 (3.8 to 4.1) per 100 000 per annum in 2017. Unintentional drowning-associated mortality was generally higher in children, males and in low-SDI to middle-SDI countries. China, India, Pakistan and Bangladesh accounted for 51.2% of all drowning deaths in 2017. Oceania was the region with the highest rate of age-standardised YLLs in 2017, with 45 434 (40 850 to 50 539) YLLs per 100 000 across both sexes. __Conclusions:__ There has been a decline in global drowning rates. This study shows that the decline was not consistent across countries. The results reinforce the need for continued and improved policy, prevention and research efforts, with a focus on low-and middle-income countries

    Anemia prevalence in women of reproductive age in low- and middle-income countries between 2000 and 2018

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    Anemia is a globally widespread condition in women and is associated with reduced economic productivity and increased mortality worldwide. Here we map annual 2000–2018 geospatial estimates of anemia prevalence in women of reproductive age (15–49 years) across 82 low- and middle-income countries (LMICs), stratify anemia by severity and aggregate results to policy-relevant administrative and national levels. Additionally, we provide subnational disparity analyses to provide a comprehensive overview of anemia prevalence inequalities within these countries and predict progress toward the World Health Organization’s Global Nutrition Target (WHO GNT) to reduce anemia by half by 2030. Our results demonstrate widespread moderate improvements in overall anemia prevalence but identify only three LMICs with a high probability of achieving the WHO GNT by 2030 at a national scale, and no LMIC is expected to achieve the target in all their subnational administrative units. Our maps show where large within-country disparities occur, as well as areas likely to fall short of the WHO GNT, offering precision public health tools so that adequate resource allocation and subsequent interventions can be targeted to the most vulnerable populations

    Anemia prevalence in women of reproductive age in low- and middle-income countries between 2000 and 2018

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    Anemia is a globally widespread condition in women and is associated with reduced economic productivity and increased mortality worldwide. Here we map annual 2000–2018 geospatial estimates of anemia prevalence in women of reproductive age (15–49 years) across 82 low- and middle-income countries (LMICs), stratify anemia by severity and aggregate results to policy-relevant administrative and national levels. Additionally, we provide subnational disparity analyses to provide a comprehensive overview of anemia prevalence inequalities within these countries and predict progress toward the World Health Organization’s Global Nutrition Target (WHO GNT) to reduce anemia by half by 2030. Our results demonstrate widespread moderate improvements in overall anemia prevalence but identify only three LMICs with a high probability of achieving the WHO GNT by 2030 at a national scale, and no LMIC is expected to achieve the target in all their subnational administrative units. Our maps show where large within-country disparities occur, as well as areas likely to fall short of the WHO GNT, offering precision public health tools so that adequate resource allocation and subsequent interventions can be targeted to the most vulnerable populations.Peer reviewe

    Anemia prevalence in women of reproductive age in low- and middle-income countries between 2000 and 2018

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    The burden of unintentional drowning: Global, regional and national estimates of mortality from the Global Burden of Disease 2017 Study

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    This article was previously published with errors in authorship and affiliations. Please note the below updates: The updated affiliations for Rakhi Dandona 4,5,39 are 4 Institute for Health Metrics and Evaluation, University of Washington, Seattle, Washington, USA. 5 Department of Health Metrics Sciences, School of Medicine, University of Washington, Seattle, Washington, USA. 39 Public Health Foundation of India, Gurugram, India. Author Hai Quang Pham has been added prior to Suzanne Polinder. The affiliation for Hai Quang Pham 107 is 107 Institute for Global Health Innovations, Duy Tan University, Hanoi, Vietnam Author Vafa Rahimi-Movaghar has been added prior to Saleem Muhammad Rana. The affiliation for Vafa Rahimi-Movaghar 123 is 123 Sina Trauma and Surgery Research Centre, Tehran University of Medical Sciences, Tehran, Iran Author Bach Xuan Tran has been added prior to Pascual R Valdez. The affiliation for Bach Xuan Tran 151 is 151 Department of Health Economics, Hanoi Medical University, Hanoi, Vietnam. This affiliation has been added in the affiliation list. Please see: https://doi.org/10.1136/injuryprev-2019-043484corr1.© Author(s) (or their employer(s)) 2020. Background: Drowning is a leading cause of injury-related mortality globally. Unintentional drowning (International Classification of Diseases (ICD) 10 codes W65-74 and ICD9 E910) is one of the 30 mutually exclusive and collectively exhaustive causes of injury-related mortality in the Global Burden of Disease (GBD) study. This study's objective is to describe unintentional drowning using GBD estimates from 1990 to 2017. Methods: Unintentional drowning from GBD 2017 was estimated for cause-specific mortality and years of life lost (YLLs), age, sex, country, region, Socio-demographic Index (SDI) quintile, and trends from 1990 to 2017. GBD 2017 used standard GBD methods for estimating mortality from drowning. Results: Globally, unintentional drowning mortality decreased by 44.5% between 1990 and 2017, from 531 956 (uncertainty interval (UI): 484 107 to 572 854) to 295 210 (284 493 to 306 187) deaths. Global age-standardised mortality rates decreased 57.4%, from 9.3 (8.5 to 10.0) in 1990 to 4.0 (3.8 to 4.1) per 100 000 per annum in 2017. Unintentional drowning-associated mortality was generally higher in children, males and in low-SDI to middle-SDI countries. China, India, Pakistan and Bangladesh accounted for 51.2% of all drowning deaths in 2017. Oceania was the region with the highest rate of age-standardised YLLs in 2017, with 45 434 (40 850 to 50 539) YLLs per 100 000 across both sexes. Conclusions: There has been a decline in global drowning rates. This study shows that the decline was not consistent across countries. The results reinforce the need for continued and improved policy, prevention and research efforts, with a focus on low-and middle-income countries.Royal Life Saving Society - Australi
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