Study of the genetic variability in Musa sp. with the random amplified polymorphic DNA technique (RAPD)

Bananas and plantains are very important food crops for millions of persons around the world. These crops are cultivated in more than 110 countries but only 10% of their overall production is actually marketed. This means that these are mainly subsistence crops. Germplas organization and characteriz...

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Published inRevista Fitotecnia Mexicana (Mexico) Vol. 21; no. 1
Main Authors Cabrera, Over, Macaya, Gabriel, Villalobos, Heidy, Diaz, Maricela, Leon, Ondina
Format Journal Article
LanguageSpanish
Published 01.06.1998
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Abstract Bananas and plantains are very important food crops for millions of persons around the world. These crops are cultivated in more than 110 countries but only 10% of their overall production is actually marketed. This means that these are mainly subsistence crops. Germplas organization and characterization is a very important tool in developing strategies to overcome constraints affecting these crops. In this work, the random amplified polymorphic DNA technique (RAPD), using operon primers, was used to evaluate the genetic variability of Musa spp accesions in the germplas collections of the National Banana Corporation of Costa Rica (CORBANA) nad the Agronomic Center for Research and Teching (CATIE) also in Costa Rica. PCR products were separated electrophoretically in agarose gles which were then analyzed on a binary basis: presence (1) or absence (0) of bands. The data obtained were used to generate a similarity matrix according to Jaccard's criteria and a phenogram (Neighbour Joining Tree) was built. The polymorphism found was used to separate individuals according to their genome, showing a high genetic variability among AA clones and a low variability among the AAA, AAB, ABB triploids. Nonetheless a more detailed study of the traits shared by the diploids and triploids is needed in order to find the true origin of the clones Los bananos y los platanos representan una fuente vital para la alimentacion de millones de personas en todo el mundo. Se cultivan en mas de 110 paises y solo el 10% de su produccion se destina al mercado, constituyendo un alimento de subsistencia para la mayoria de los paises con economia en vias de desarrollo. La organizacion y caracterizacion del germoplasma tiene gran importancia para enfrentar de forma sostenible las limitaciones que afectan al cultivo. En esta investigacion se utilizo la tecnica del ADN polimorfico amplificado aleatoriamente (RAPD) para estudiar la variabilidad genetica de las introducciones de Musa presentes en los bancos de germoplasma de la Corporacion Bananera Nacional de Costa Rica (CORBANA) y del Centro Agronomico de Investigacion y Ensenanza (CATIE). Los productores de amplificacion de PCR fueron separados en geles de agarosa y leidos segun el criterio de presencia (1) o ausencia (0) de bandas. Estos datos se utilizaron para generar una matriz de similitud siguiendo el criterio de Jaccard, a partir del cual se confecciono un arbol filogenetico por el metodo de "Neighbour Joining Tree". El polimorfismo revelado por estos marcadores moleculares probados sirvio para separar los individuos por sus respectivos genomas, revelando que existe una extensa variabilidad genetica entre los clones con genoma AA y una escasa variabilidad genetica entre los cultivares triploides (AAA, AAB y ABB). Lo anterior sugiere el mismo origen evolutivo para la totalidad de estos. Sin embargo, se considera que mediante un estudio mas amplio de las caracteristicas, que como grupo, comparten con los diploides es posible demostrar su verdadero origen
AbstractList Bananas and plantains are very important food crops for millions of persons around the world. These crops are cultivated in more than 110 countries but only 10% of their overall production is actually marketed. This means that these are mainly subsistence crops. Germplas organization and characterization is a very important tool in developing strategies to overcome constraints affecting these crops. In this work, the random amplified polymorphic DNA technique (RAPD), using operon primers, was used to evaluate the genetic variability of Musa spp accesions in the germplas collections of the National Banana Corporation of Costa Rica (CORBANA) nad the Agronomic Center for Research and Teching (CATIE) also in Costa Rica. PCR products were separated electrophoretically in agarose gles which were then analyzed on a binary basis: presence (1) or absence (0) of bands. The data obtained were used to generate a similarity matrix according to Jaccard's criteria and a phenogram (Neighbour Joining Tree) was built. The polymorphism found was used to separate individuals according to their genome, showing a high genetic variability among AA clones and a low variability among the AAA, AAB, ABB triploids. Nonetheless a more detailed study of the traits shared by the diploids and triploids is needed in order to find the true origin of the clones Los bananos y los platanos representan una fuente vital para la alimentacion de millones de personas en todo el mundo. Se cultivan en mas de 110 paises y solo el 10% de su produccion se destina al mercado, constituyendo un alimento de subsistencia para la mayoria de los paises con economia en vias de desarrollo. La organizacion y caracterizacion del germoplasma tiene gran importancia para enfrentar de forma sostenible las limitaciones que afectan al cultivo. En esta investigacion se utilizo la tecnica del ADN polimorfico amplificado aleatoriamente (RAPD) para estudiar la variabilidad genetica de las introducciones de Musa presentes en los bancos de germoplasma de la Corporacion Bananera Nacional de Costa Rica (CORBANA) y del Centro Agronomico de Investigacion y Ensenanza (CATIE). Los productores de amplificacion de PCR fueron separados en geles de agarosa y leidos segun el criterio de presencia (1) o ausencia (0) de bandas. Estos datos se utilizaron para generar una matriz de similitud siguiendo el criterio de Jaccard, a partir del cual se confecciono un arbol filogenetico por el metodo de "Neighbour Joining Tree". El polimorfismo revelado por estos marcadores moleculares probados sirvio para separar los individuos por sus respectivos genomas, revelando que existe una extensa variabilidad genetica entre los clones con genoma AA y una escasa variabilidad genetica entre los cultivares triploides (AAA, AAB y ABB). Lo anterior sugiere el mismo origen evolutivo para la totalidad de estos. Sin embargo, se considera que mediante un estudio mas amplio de las caracteristicas, que como grupo, comparten con los diploides es posible demostrar su verdadero origen
Author Diaz, Maricela
Villalobos, Heidy
Cabrera, Over
Macaya, Gabriel
Leon, Ondina
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Snippet Bananas and plantains are very important food crops for millions of persons around the world. These crops are cultivated in more than 110 countries but only...
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SubjectTerms DNA CLEAVAGE
DNA FINGERPRINTING
EMPREINTE ADN
FRAGMENTACION DEL ADN
FRAGMENTATION DE L'ADN
GENETIC VARIATION
HUELLAS GENETICAS ADN
MUSA
VARIACION GENETICA
VARIATION GENETIQUE
Title Study of the genetic variability in Musa sp. with the random amplified polymorphic DNA technique (RAPD)
Volume 21
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