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Teklemariam SS, Bayissa KN, Matros A, Pillen K, Ordon F, Wehner G. The genetic diversity of Ethiopian barley genotypes in relation to their geographical origin. PLoS One 2022; 17:e0260422. [PMID: 35622864 PMCID: PMC9140232 DOI: 10.1371/journal.pone.0260422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 04/19/2022] [Indexed: 11/18/2022] Open
Abstract
Ethiopia is recognized as a center of diversity for barley, and its landraces are known for the distinct genetic features compared to other barley collections. The genetic diversity of Ethiopian barley likely results from the highly diverse topography, altitude, climate conditions, soil types, and farming systems. To get detailed information on the genetic diversity a panel of 260 accessions, comprising 239 landraces and 21 barley breeding lines, obtained from the Ethiopian biodiversity institute (EBI) and the national barley improvement program, respectively were studied for their genetic diversity using the 50k iSelect single nucleotide polymorphism (SNP) array. A total of 983 highly informative SNP markers were used for structure and diversity analysis. Three genetically distinct clusters were obtained from the structure analysis comprising 80, 71, and 109 accessions, respectively. Analysis of molecular variance (AMOVA) revealed the presence of higher genetic variation (89%) within the clusters than between the clusters (11%), with moderate genetic differentiation (PhiPT = 0.11) and five accessions were detected as first-generation migrants using Monte Carlo resampling methods. The Mantel test revealed that the genetic distance between accessions is poorly associated with their geographical distance. Despite the observed weak correlation between geographic distance and genetic differentiation, for some regions like Gonder, Jimma, Gamo-Gofa, Shewa, and Welo, more than 50% of the landraces derived from these regions are assigned to one of the three clusters.
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Affiliation(s)
- Surafel Shibru Teklemariam
- Ethiopian Institute of Agricultural Research (EIAR), Melkassa Agricultural Research Center, Melkassa, Ethiopia
| | - Kefyalew Negisho Bayissa
- Ethiopian Institute of Agricultural Research (EIAR), National Agricultural Biotechnology Research Center, Holetta, Ethiopia
| | - Andrea Matros
- Julius Kühn Institute (JKI), Federal Research Centre on Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Quedlinburg, Germany
| | - Klaus Pillen
- Institute of Agricultural and Nutritional Sciences, Martin Luther University, Halle (Saale), Germany
| | - Frank Ordon
- Julius Kühn Institute (JKI), Federal Research Centre on Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Quedlinburg, Germany
| | - Gwendolin Wehner
- Julius Kühn Institute (JKI), Federal Research Centre on Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Quedlinburg, Germany
- * E-mail:
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Mulugo L, Kyazze FB, Kibwika P, Kikulwe E, Omondi AB, Ajambo S. Unravelling technology-acceptance factors influencing farmer use of banana tissue culture planting materials in Central Uganda. AFRICAN JOURNAL OF SCIENCE, TECHNOLOGY, INNOVATION AND DEVELOPMENT 2019. [DOI: 10.1080/20421338.2019.1634900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Lucy Mulugo
- Department of Extension and Innovation Studies, School of Agricultural Sciences, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda
| | - Florence Birungi Kyazze
- Department of Extension and Innovation Studies, School of Agricultural Sciences, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda
| | - Paul Kibwika
- Department of Extension and Innovation Studies, School of Agricultural Sciences, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda
| | - Enoch Kikulwe
- Bioversity International, Plot 106, Katalima Road, P.O. Box 24384, Kampala, Uganda
| | | | - Susan Ajambo
- Bioversity International, Plot 106, Katalima Road, P.O. Box 24384, Kampala, Uganda
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Kalsa KK. Farmers’ attitudes and practices towards variety and certified seed use, seed replacement and seed storage in wheat growing areas of Ethiopia. AFRICAN JOURNAL OF SCIENCE, TECHNOLOGY, INNOVATION AND DEVELOPMENT 2019. [DOI: 10.1080/20421338.2018.1550932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Karta Kaske Kalsa
- Ethiopian Institute of Agricultural Research, Kulumsa Research Center, Asella, Ethiopia
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Westengen OT, Skarbø K, Mulesa TH, Berg T. Access to genes: linkages between genebanks and farmers’ seed systems. Food Secur 2018. [DOI: 10.1007/s12571-017-0751-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Samberg LH, Fishman L, Allendorf FW. Population genetic structure in a social landscape: barley in a traditional Ethiopian agricultural system. Evol Appl 2013; 6:1133-45. [PMID: 24478796 PMCID: PMC3901544 DOI: 10.1111/eva.12091] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 05/31/2013] [Indexed: 11/30/2022] Open
Abstract
Conservation strategies are increasingly driven by our understanding of the processes and patterns of gene flow across complex landscapes. The expansion of population genetic approaches into traditional agricultural systems requires understanding how social factors contribute to that landscape, and thus to gene flow. This study incorporates extensive farmer interviews and population genetic analysis of barley landraces (Hordeum vulgare) to build a holistic picture of farmer-mediated geneflow in an ancient, traditional agricultural system in the highlands of Ethiopia. We analyze barley samples at 14 microsatellite loci across sites at varying elevations and locations across a contiguous mountain range, and across farmer-identified barley types and management strategies. Genetic structure is analyzed using population-based and individual-based methods, including measures of population differentiation and genetic distance, multivariate Principal Coordinate Analysis, and Bayesian assignment tests. Phenotypic analysis links genetic patterns to traits identified by farmers. We find that differential farmer management strategies lead to markedly different patterns of population structure across elevation classes and barley types. The extent to which farmer seed management appears as a stronger determinant of spatial structure than the physical landscape highlights the need for incorporation of social, landscape, and genetic data for the design of conservation strategies in human-influenced landscapes.
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Abraha A, Uhlen AK, Abay F, Sahlstrøm S, Bjørnstad Å. Roasted Barley Foods: Processing and Varietal Differences AffectingKoloandTihni, Traditional Grain Products in Northern Ethiopia. CEREAL FOOD WORLD 2013. [DOI: 10.1094/cfw-58-2-0071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- A. Abraha
- Corresponding author.or
- Norwegian University of Life Sciences, Ås, Norway
- Mekelle University, College of Dryland Agriculture and Natural Resources, Mekelle, Ethiopia
| | - A. K. Uhlen
- Norwegian University of Life Sciences, Ås, Norway
| | - F. Abay
- Mekelle University, College of Dryland Agriculture and Natural Resources, Mekelle, Ethiopia
| | - S. Sahlstrøm
- Nofima – The Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
| | - Å. Bjørnstad
- Norwegian University of Life Sciences, Ås, Norway
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Kraft KH, de Jesús Luna-Ruíz J, Gepts P. Different Seed Selection and Conservation Practices for Fresh Market and Dried Chile Farmers in Aguascalientes, Mexico. ECONOMIC BOTANY 2010; 64:318-328. [PMID: 21212817 PMCID: PMC2995857 DOI: 10.1007/s12231-010-9136-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 09/20/2010] [Indexed: 05/30/2023]
Abstract
Different Seed Selection and Conservation Practices for Fresh Market and Dried Chile Farmers in Aguascalientes, Mexico. The process of selecting and saving seed is the most basic and oldest of agricultural practices. In today's modern and highly capital-intensive agriculture, seeds are often treated like another chemical input. This study sought to examine seed selection and saving practices among chile farmers in Aguascalientes, Mexico, where both industrial and traditional agriculture are practiced. We observed a clear division among farmers who plant chile peppers commercially. Sixty-eight chile pepper farmers were surveyed in order to document seed selection and saving practices. Fifteen respondents (22%) planted chile peppers destined for the fresh market and all utilized purchased commercial seed of F1 hybrid varieties. Fifty-three farmers (78%) planted chiles to be dried and either saved their own or purchased seeds that others had saved and selected. Farmers who saved their own seed sought to maintain an ideotype, rather than directionally select for certain traits, much like Cleveland et al. (2000) chronicled in central Mexican maize farmers. Farmers would benefit from a participatory plant-breeding program in order to maintain productive seed stock for the continued cultivation of dried chile pepper in the state.
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Affiliation(s)
- Kraig H. Kraft
- Department of Plant Sciences, University of California, Davis, CA USA
| | | | - Paul Gepts
- Department of Plant Sciences, University of California, Davis, CA USA
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Raymond CM, Fazey I, Reed MS, Stringer LC, Robinson GM, Evely AC. Integrating local and scientific knowledge for environmental management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2010; 91:1766-77. [PMID: 20413210 DOI: 10.1016/j.jenvman.2010.03.023] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 03/20/2010] [Accepted: 03/27/2010] [Indexed: 05/05/2023]
Abstract
This paper evaluates the processes and mechanisms available for integrating different types of knowledge for environmental management. Following a review of the challenges associated with knowledge integration, we present a series of questions for identifying, engaging, evaluating and applying different knowledges during project design and delivery. These questions are used as a basis to compare three environmental management projects that aimed to integrate knowledge from different sources in the United Kingdom, Solomon Islands and Australia. Comparative results indicate that integrating different types of knowledge is inherently complex - classification of knowledge is arbitrary and knowledge integration perspectives are qualitatively very different. We argue that there is no single optimum approach for integrating local and scientific knowledge and encourage a shift in science from the development of knowledge integration products to the development of problem-focussed, knowledge integration processes. These processes need to be systematic, reflexive and cyclic so that multiple views and multiple methods are considered in relation to an environmental management problem. The results have implications for the way in which researchers and environmental managers undertake and evaluate knowledge integration projects.
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Affiliation(s)
- Christopher M Raymond
- Centre for Rural Health and Community Development, University of South Australia, Australia.
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de Boef WS, Dempewolf H, Byakweli JM, Engels JMM. Integrating Genetic Resource Conservation and Sustainable Development into Strategies to Increase the Robustness of Seed Systems. ACTA ACUST UNITED AC 2010. [DOI: 10.1080/10440046.2010.484689] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dangles O, Carpio FC, Villares M, Yumisaca F, Liger B, Rebaudo F, Silvain JF. Community-based participatory research helps farmers and scientists to manage invasive pests in the Ecuadorian Andes. AMBIO 2010; 39:325-35. [PMID: 20799682 PMCID: PMC3357697 DOI: 10.1007/s13280-010-0041-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Participatory research has not been a conspicuous methodology in developing nations for studying invasive pests, an increasing threat to the sustainable development in the tropics. Our study presents a community-based monitoring system that focuses on three invasive potato tuber moth species (PTM). The monitoring was developed and implemented by young farmers in a remote mountainous area of Ecuador. Local participants collected data from the PTM invasion front, which revealed clear connection between the abundance of one of the species (Tecia solanivora) and the remoteness to the main market place. This suggests that mechanisms structuring invasive populations at the invasion front are different from those occurring in areas invaded for longer period. Participatory monitoring with local people may serve as a cost-effective early warning system to detect and control incipient invasive pest species in countries where the daily management of biological resources is largely in the hands of poor rural people.
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Affiliation(s)
- O Dangles
- French Institute for Research & Development, IRD, unit DEEIT.
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