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PRIOLLI, R.H.G.; MENDES-JUNIOR, C.T.; SOUSA, S.M.B.; SOUSA, N.E.A.; CONTEL, E.P.B.. |
O objetivo deste trabalho foi detectar os efeitos do melhoramento sobre a diversidade do germoplasma da soja cultivada nas três ultimas décadas, por meio da comparação de seis programas de melhoramento e períodos de lançamento de cultivares, utilizando locos microssatélites. Em relação aos programas de melhoramento, todos os locos apresentaram diferenças significativas em suas distribuições alélicas. Alguns locos eram compostos de alelos exclusivos em alguns programas de melhoramento, enquanto outros foram compostos sempre dos mesmos alelos em maior freqüência para todos os programas. A AMOVA indicou maior porção da variância devido a cultivares dentro de programas e somente 5,3% (p<0,05) devido à diferença entre programas. Quando comparados os... |
Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Glycine max; SSR; Germoplasma; Erosão genética; Germplasm; Genetic erosion. |
Ano: 2004 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/112539 |
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Asprelli,P.D.; Lorello,I.M.; Occhiuto,P.N.; Togno,L.S.; Makuch,M.A.; García Lampasona,S.C.; Peralta,I.E.. |
The richness of the cultural values found in the Argentinean Andean communities is integrated by a varied diversity of genetic resources, the development of a sustainable agriculture, and the conservation of the producer's own seeds. Local agriculture is a family economic activity, in which traditional varieties of vegetable landraces are highly appreciated for their flavour, colour and aromas. However; social, economic and environmental factors have an effect on crop diversity conservation. The main aim of this work was to retrieve and maintain a representative collection of traditional crop genetic resources still cultivated in the District of Valle Fértil, San Juan Province, Argentina, and to document the farmers' crop experiences and uses. Fifty... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vegetable landraces; Agricultural biodiversity; Genetic erosion; Germplasm conservation. |
Ano: 2012 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2012000100005 |
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Auler,Neiva Maria Frizon; Reis,Maurício Sedrez dos; Guerra,Miguel Pedro; Nodari,Rubens Onofre. |
The objective of this study was to generate information relative to the allele distribution and dynamics within and among populations of Araucaria angustifolia, a naturally-occurring conifer in the south of Brazil, being known popularly as "pinheiro-do-Paraná", "araucaria" or pine tree. In order to elucidate the levels and the distribution of the genetic variability, the population's genetic structure and the genetic distance among natural populations of this species with different levels of disturbance in different geographical areas were studied in detail. For this, samples of leaf tissue were collected from 328 adult individuals in nine natural populations in Santa Catarina State. To analyze the samples, the allozyme technique was applied in starch gel... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pinheiro; Forest degradation; Genetic diversity; Genetic erosion. |
Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300014 |
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