ABSTRACT The objective of this study was to estimate the genetic parameters and predict selection of genetic gains and genetic diversity of 12 Andropogon lateralis ecotypes collected in the State of Rio Grande do Sul, Brazil. To estimate genetic parameters and predict selection gains, the REML/BLUP technique was applied. Genetic diversity among the ecotypes was evaluated by two clustering methods (optimization and hierarchical) and principal component (PC) analysis, the latter method also used to discard variables. The genetic parameters studied […]

ABSTRACT In this study, we investigated the differentiation of five different chicken ecotypes – Center, North, South, West, and East – of Saudi Arabia using discriminate analysis. The analysis was based on nine important morphological and phenotypic traits: body color, beak color, earlobe color, eye color, shank color, comb color, comb type, comb size, and feather distribution. There was a strong significant relationship between the phenotype and effect of geographic height in terms of comb type and earlobe color in […]

Estudou-se a diversidade genética de pacas (Agouti paca) de três plantéis comerciais no Brasil. Como o genoma desta espécie é desconhecido, utilizaram-se o polimorfismo de DNA amplificado ao acaso e reação em cadeia da polimerase (RAPD-PCR). Dez primers selecionados geraram 60 bandas polimórficas. A variabilidade genética inter e intrapopulações estimada pela análise de variância molecular (AMOVA) foi de 12,55 e 87,45%, respectivamente. A menor distância de Nei encontrada foi de 11,76% entre as populações de Carangola (CG) e São Francisco […]