72 research outputs found

    Village Baseline Study: Site Analysis Report for Albertine Rift – Hoima, Uganda

    Get PDF
    The village baseline study of Kibaire village in the CCAFS benchmark site Hoima in Uganda took place from 13 to 16 July 2011. Forests are exploited at unsustainable levels in Kibaire but deforestation does not appear to be a serious threat because the tree population is still relatively high. Most of the forests have been leased to private individuals as part of the privatisation policy being implemented in Uganda. Wetlands are also increasingly subjected to overexploitation and pollution from brewing and other activities. Farming at both subsistence and commercial level is increasing at the expense of forests. Community access to forest resources is restricted. Participants identified 29 organisations working in the community, two-third of them operating from outside the locality. Participants said that they did have plenty of food in the village, and women expressed that they had never had a food crisis. Nonetheless, half of the organisations men and women identified were involved in some form of food security related activity, and notably food availability. Less than one-third of the organisations addressed natural resources management, and most of them were from outside the community. Organisations are the most significant source of information on agriculture. Farmers also get information through the many radio stations in the area that air many programs in local languages

    Coding SNPs analysis highlights genetic relationships and evolution pattern in eggplant complexes

    Get PDF
    [EN] Brinjal (Solanum melongena), scarlet (S. aethiopicum) and gboma (S. macrocarpon) eggplants are three Old World domesticates. The genomic DNA of a collection of accessions belonging to the three cultivated species, along with a representation of various wild relatives, was characterized for the presence of single nucleotide polymorphisms (SNPs) using a genotype-by-sequencing approach. A total of 210 million useful reads were produced and were successfully aligned to the reference eggplant genome sequence. Out of the 75,399 polymorphic sites identified among the 76 entries in study, 12,859 were associated with coding sequence. A genetic relationships analysis, supported by the output of the FastSTRUCTURE software, identified four major sub-groups as present in the germplasm panel. The first of these clustered S. aethiopicum with its wild ancestor S. anguivi; the second, S. melongena, its wild progenitor S. insanum, and its relatives S. incanum, S. lichtensteinii and S. linneanum; the third, S. macrocarpon and its wild ancestor S. dasyphyllum; and the fourth, the New World species S. sisymbriifolium, S. torvum and S. elaeagnifolium. By applying a hierarchical FastSTRUCTURE analysis on partitioned data, it was also possible to resolve the ambiguous membership of the accessions of S. campylacanthum, S. violaceum, S. lidii, S. vespertilio and S. tomentsum, as well as to genetically differentiate the three species of New World Origin. A principal coordinates analysis performed both on the entire germplasm panel and also separately on the entries belonging to sub-groups revealed a clear separation among species, although not between each of the domesticates and their respective wild ancestors. There was no clear differentiation between either distinct cultivar groups or different geographical provenance. Adopting various approaches to analyze SNP variation provided support for interpretation of results. The genotyping-by-sequencing approach showed to be highly efficient for both quantifying genetic diversity and establishing genetic relationships among and within cultivated eggplants and their wild relatives. The relevance of these results to the evolution of eggplants, as well as to their genetic improvement, is discussed.This work has been funded in part by European Unions Horizon 2020 Research and Innovation Programme under grant agreement No 677379 (G2P-SOL project: Linking genetic resources, genomes and phenotypes of Solanaceous crops) and by Spanish Ministerio de Economia, Industria y Competitividad and Fondo Europeo de Desarrollo Regional (grant AGL2015-64755-R from MINECO/FEDER). Funding has also been received from the initiative "Adapting Agriculture to Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives", which is supported by the Government of Norway. This last project is managed by the Global Crop Diversity Trust with the Millennium Seed Bank of the Royal Botanic Gardens, Kew and implemented in partnership with national and international gene banks and plant breeding institutes around the world. For further information see the project website:http://www.cwrdiversity.org/. Pietro Gramazio is grateful to Universitat Politecnica de Valencia for a pre-doctoral (Programa FPI de la UPV-Subprograma 1/2013 call) contract. Mariola Plazas is grateful to Spanish Ministerio de Economia, Industria y Competitividad for a post-doctoral grant within the Santiago Grisolia Programme (FCJI-2015-24835). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Acquadro, A.; Barchi, L.; Gramazio, P.; Portis, E.; Vilanova Navarro, S.; Comino, C.; Plazas Ávila, MDLO.... (2017). Coding SNPs analysis highlights genetic relationships and evolution pattern in eggplant complexes. PLoS ONE. 12(7). https://doi.org/10.1371/journal.pone.0180774Se018077412

    Six cultivars of <i>Solanum macrocarpon</i> (Solanaceae) in Ghana

    No full text
    The  Solanum macrocarpon complex (the cultivated egg plant) has been studied in Ghana using morphological and experimental methods. Six cultivars belonging to the S.  macrocarpon complex have been recognized and described. The cultivars are  S. macrocarpon ‘Gboma’,  S. macrocarpon ‘Mankessim’,  S. macrocarpon ‘Akwaseho’,  S. macrocarpon ‘Kade’,  S. macrocarpon ‘Sarpeiman’ and  S. macrocarpon ‘Bui’. The very spiny, hairy plant traditionally called S. dasyphyllum is regarded as the wild ancestor from which the cultivars have been derived through a process of crop evolution. The variation within S. macrocarpon complex is attributable to genotypic differences and environmental factors
    corecore