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Registros recuperados: 21 | |
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Analysis of seed exchange networks at a single point in time may reify sporadic relations into apparently fixed and long-lasting ones. In northern Cameroon, where environment is not only strongly seasonal but also shows unpredictable interannual variation, farmers’ social networks are flexible from year to year. When adjusting their strategies, Tupuri farmers do not systematically solicit the same partners to acquire the desired propagules. Seed acquisitions documented during a single cropping season may thus not accurately reflect the underlying larger social network that can be mobilized at the local level. To test this hypothesis, we documented, at the outset of two cropping seasons (2010 and 2011), the relationships through which seeds were... |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Agrobiodiversity; Climate variability; Gender; Kinship relationships; Longitudinal network analysis; Seed exchange networks. |
Ano: 2016 |
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Siqueira,MVBM. |
In Brazil current studies and investments on yams are incipient. Similarly, the literature in recent decades lacks adequate information on this group of plants. The existing literature, on its turn, requires more than ever to be revised and organized. Yams have joined the so-called "neglected" group of crops for several reasons, but particularly because they are associated with poor and traditional communities. Many vegetables introduced in Brazil during the colonization period have adapted to different cropping systems, yams being an excellent example. This diversity resulted very widespread, yet poorly recognized in the country. In turn, the gardens using traditional farming systems continue to maintain and enhance yam local varieties. Studies from other... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dioscorea spp.; Tubers; Traditional agriculture; Agrobiodiversity; Molecular markers. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000100003 |
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Barbosa,Reinaldo I; Mourão Júnior,Moisés; Luz,Francisco Joaci de F. |
Our objective was to study distinctions in the morphology of the pepper fruits (Capsicum spp., Solanaceae) used by indigenous (living in traditional villages) and non-indigenous groups (originated from migration and colonization, with or without miscegenation, living on non-indigenous lands) in the State of Roraima, Northern Brazilian Amazonia. In this sense, we used a database with 182 subsamples of Capsicum spp. Accessions were collected at 39 sites (14 indigenous and 25 non-indigenous), which were characterized additionally in relation to the predominant phytophysiognomy (savanna or forest) and home zone (rural or urban). We found morphological differences in pepper fruits related to both phytophysiognomy and home zone of the collecting site, but not to... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum chinense; Capsicum frutescens; Agrobiodiversity; Ethnic botanic; Pungency; Descriptors. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362010000400017 |
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Gruere, Guillaume P.; Nagarajan, Latha; King, E.D.I. Oliver. |
Minor millets are examples of underutilized plant species, being locally important but rarely traded internationally with an unexploited economic potential. In the Kolli hills of Tamil Nadu, India, a genetically diverse pool of minor millet varieties are grown by the tribal farming communities to meet their subsistence food needs. Most of these minor crops were not traded outside the farming community. Despite a consumption preference among the farming communities for minor millets, in the recent past the acreage under minor millet crops have declined considerably due to the availability of substitute cash crops. As a response, the M.S. Swaminathan Research Foundation (MSSRF) based in Chennai has led targeted conservation cum commercialization intervention... |
Tipo: Journal Article |
Palavras-chave: Underutilized species; Agricultural marketing; Collective action; Agrobiodiversity; Agribusiness. |
Ano: 2007 |
URL: http://purl.umn.edu/47910 |
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Pelwing, Andreia Becker; Frank, Lucia Brandao; Barros, Ingrid I. Bergman de. |
This study investigated the state of the art of traditional, or landrace seeds in the State of Rio Grande do Sul. An ethnographic study was carried out by means of a non-statistical seed sampling in 13 farms from eight municipalities lying in the regions of the Greater Porto Alegre, Serra, Planalto Médio, Depressão Central and Serra do Sudeste. A broad diversity of ancient plants was observed. These species survive in the farms with the help of a seed bank. All in all, 39 plant species were characterized, distributed in 12 families, totaling 258 instances of landrace seeds grown in the farms visited. According to the farmers, the preference for landrace seeds is due chiefly to seed adaptability, better flavor and quality of the produce grown therefrom,... |
Tipo: Journal Article |
Palavras-chave: Landrace seeds; Agrobiodiversity; Family agriculture; Sustainability; Agribusiness; Q20. |
Ano: 2008 |
URL: http://purl.umn.edu/61244 |
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Benin, Samuel; Gebremedhin, Berhanu; Smale, Melinda; Pender, John L.; Ehui, Simeon K.. |
On farm conservation of crop diversity poses obvious policy challenges in terms of the design of appropriate incentive mechanisms and possible trade-offs between conservation and productivity. This paper compares factors explaining the inter-specific diversity (diversity among species) and infra-specific diversity (diversity among varieties within a species) of cereal crops grown in communities and on individual farms in the northern Ethiopian highlands. Using named varieties and ecological indices of spatial diversity (richness, evenness, and inverse dominance), we find that a combination of factors related to the agro-ecology of a community, its access to markets, and the characteristics of its households and farms significantly affect both the inter-... |
Tipo: Working or Discussion Paper |
Palavras-chave: Household Farms; Communities; Ethiopia; Agrobiodiversity; On Farm Conservation; Crop Production/Industries. |
Ano: 2003 |
URL: http://purl.umn.edu/16101 |
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Registros recuperados: 21 | |
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