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Genetic variability in common wheat germplasm based on coefficients of parentage Genet. Mol. Biol.
Bered,Fernanda; Barbosa-Neto,José F.; Carvalho,Fernando I.F. de.
The characterization of genetic variability and an estimate of the genetic relationship among varieties are essential to any breeding program, because artificial crosses among less similar parents allow a larger segregation and the combination of different favorable alleles. Genetic variability can be evaluated in different ways, including the Coefficient of Parentage (COP), which estimates the probability of two alleles in two different individuals being identical by descent. In this study, we evaluated the degree of genetic relationship among 53 wheat genotypes, and identified the ancestor genotypes which contributed the most to the current wheat germplasm, as a prediction of the width of the genetic base of this cereal. The results revealed a mean COP...
Tipo: Info:eu-repo/semantics/article Palavras-chave: COP; Genetic base; Gene pool; Triticum aestivum L.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200015
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Technical efficiency and technology in Eastern and Western agriculture: A comparison of crop and dairy farms in Hungary and France AgEcon
Fogarasi, Jozsef; Latruffe, Laure.
The paper investigates the difference in technical efficiency and technology between French and Hungarian farms in dairy and cereal, oilseed and protein seed (COP) sectors during 2001-2004. The analyses is performed with Data Envelopment Analysis (DEA) under separate and common frontiers. Results indicate that Hungarian dairy farmers are more clustered to their own frontier than French farms are, but that the difference is less clear in COP farming. Hungarian dairy and COP farms are less scale efficient than French farms on average. Under a common hypothetical technology, Hungarian farms would be the leaders. Reasons might be the presence of large corporate farms and a higher public support in Hungary.
Tipo: Conference Paper or Presentation Palavras-chave: Technical efficiency; Productivity factor; Dairy; COP; France; Hungary; Farm Management.
Ano: 2007 URL: http://purl.umn.edu/7810
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