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Microsatellite diversity and chromosome number in natural populations of Trifolium riograndense Burkart Scientia Agricola
Conterato,Ionara Fatima; Dall'Agnol,Miguel; Schifino-Wittmann,Maria Teresa; Janke,Aline.
Twenty eight natural populations of Trifolium riograndense Burkart, an important forage legume from native pastures of the state of Rio Grande do Sul, Brazil, were evaluated for genetic diversity with eight Simple Sequences Repeats (SSR) markers. Chromosome numbers were also determined. The eight markers were polymorphic, with 35 alleles and an average of 4.37 alleles per locus, and Polymorphism Information Content (PIC) between 0.48 and 0.80. Group analysis based on Jaccard´s similarity coefficient separated the 28 accessions in nine groups, with an average genetic similarity of 0.44, indicating a high genetic variability among the populations. No evident relation between genetic distance and geographical origin was detected. The chromosome number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Native clover; Genetic diversity; Cytogenetics; Native pastures.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000200005
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Nutritional value of forage species from the Central Highlands Region of Mexico at different stages of maturity Ciência Rural
Rayas Amor,Adolfo Armando; Estrada Flores,Julieta Gertrudis; Mould,Fergus Lawrence; Castelán Ortega,Octavio Alonso.
This paper has two objectives, the first is to determine the chemical composition, gas production parameters and the gas release kinetics, at different stages of maturity, of three grasses and a legume commonly found in long established pastures in Mexico central highland plateau. The second is to combine the gas release kinetics analysis and the GP fitted to a mathematical model in order to improve the biological understanding of the fermentation kinetics obtained from the GP technique. Representative samples of Pennisetum clandestinum (kikuyu grass), Sporobolus indicus (mouse tail), Eleocharis dombeyana (reed), Trifolium amabile (Aztec clover) plus a composite sample were collected in the growing season (July, September and November 2003) and analysed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Native pastures; Fermentation parameters; Gas release kinetic.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000400022
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