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	Provedor de dados AgEcon (1) Scientia Agricola (1) Autor Adato, Michelle (1) Becerril, Javier (1) Bellon, Mauricio R. (1) Cantagali,Liriana Belizário (1) Lopes,Ana Daniela (1) Machado,Maria de Fátima Pires da Silva (1) Mangolin,Claudete Aparecida (1) Mindek, Dubravka (1) Mora,Freddy (1) Scapim,Carlos Alberto (1) Silva,Tereza Aparecida (1) Teixeira,Flávia França (1) Mais... Palavra-chave Maize germplasm (2) Agricultural extension (1) Agricultural research (1) Creolization (1) Crop Production/Industries (1) Food Security and Poverty (1) Mexico (1) Neighbor-joining (1) Poverty (1) Simple sequence repeats (1) Sustainable livelihoods (1) Vulnerability (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Working or Discussion Paper (1) Ano 2015 (1) 2003 (1) País Brazil (1) United States (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última THE IMPACT OF IMPROVED MAIZE GERMPLASM ON POVERTY ALLEVIATION: THE CASE OF TUXPENO-DERIVED MATERIAL IN MEXICO AgEcon Bellon, Mauricio R.; Adato, Michelle; Becerril, Javier; Mindek, Dubravka. This study documents how poor small-scale farmers in lowland tropical Mexico use improved maize germplasm and how this contributes to their well-being. It does this by assessing both the direct adoption of improved varieties and examining the process of their “creolization.” By exposing improved varieties for replanting, and in some cases promoting their hybridization with landraces, either by design or by accident, farmers produce what they recognize as “creolized” varieties. Our key hypothesis is that poor farmers benefit from improved germplasm through creolization. Creolization provides farmers with new options, as they deliberately modify an improved technology generated by the formal research system to suit their own circumstances and needs.... Tipo: Working or Discussion Paper Palavras-chave: Poverty; Agricultural research; Sustainable livelihoods; Vulnerability; Agricultural extension; Maize germplasm; Creolization; Mexico; Crop Production/Industries; Food Security and Poverty. Ano: 2003 URL: http://purl.umn.edu/16471 Genetic diversity assessed by microsatellite markers in sweet corn cultivars Scientia Agricola Lopes,Ana Daniela; Scapim,Carlos Alberto; Machado,Maria de Fátima Pires da Silva; Mangolin,Claudete Aparecida; Silva,Tereza Aparecida; Cantagali,Liriana Belizário; Teixeira,Flávia França; Mora,Freddy. Information on genetic diversity is essential to the characterization and utilization of germplasm. The genetic diversity of twenty-two sweet corn cultivars (seventeen open-pollinated varieties, OPV, and five hybrids, H) was investigated by applying simple sequence repeat markers. A total of 257 primers were tested, of which 160 were found to be usable in terms of high reproducibility for all the samples tested; 45 were polymorphic loci, of which 30 were used to assess the genetic diversity of sweet corn cultivars. We detected a total of 86 alleles using 30 microsatellite primers. The mean polymorphism was 82 %. The highest heterozygosity values (Ho = 0.20) were found in the PR030-Doce Flor da Serra and BR427 III OPVs, whereas the lowest values (0.14) were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Simple sequence repeats; Neighbor-joining; Maize germplasm. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000600513 Registros recuperados: 2 Primeira ... 1 ... Última

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