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GENETIC VARIABILITY OF THE COLOMBIAN COLLECTION OF LULO (SOLANUM QUITOENSE LAM.) AND RELATED SPECIES OF SECTION LASIOCARPA VARIABILIDAD GENÉTICA DE LA COLECCIÓN COLOMBIANA DE LULO (SOLANUM QUITOENSE LAM.) Y ESPECIES RELACIONADAS DE LA SECCIÓN LASIOCARPA

Authors: Fory Sánchez, Paola Andrea; Sánchez Mosquera, I.; Bohórquez Cháux, Adriana; Ramírez, H.; Medina Cano, CI; Lobo Arias, M;

GENETIC VARIABILITY OF THE COLOMBIAN COLLECTION OF LULO (SOLANUM QUITOENSE LAM.) AND RELATED SPECIES OF SECTION LASIOCARPA VARIABILIDAD GENÉTICA DE LA COLECCIÓN COLOMBIANA DE LULO (SOLANUM QUITOENSE LAM.) Y ESPECIES RELACIONADAS DE LA SECCIÓN LASIOCARPA

Abstract

An AFLP genetic variability study of the Colombian collection of lulo Solanum quitoense and related species of section Lasiocarpa was carried out. The aim was to elucidate the genetic polymorphism of such collection and interspecific affinities. Two primer combinations, E-ACG/M-CAT and E-ACG-M-CTC, were chosen out of 30 evaluated combinations based on their high expression levels of polymorphism. The UPGMA dendrogram, obtained through similarity analysis, exhibited systemic power with discrimination at species level and between the groups of Andean and Amazonian taxa from section Lasiocarpa, with a clear separation between Lasiocarpa species and outgroup taxa. Clustering patterns regarding the geographic origin of the accessions, as well as between materials of the S. quitoense botanical varieties septentrionale and quitoense were not evident. Wider genetic variability was observed in the wild section Lasiocarpa species than in the cultivated ones S. quitoense and S. sessiliflorum. The interespecific hybrids between S. hirtum and S. quitoense and backcrosses of these with S. quitoense exhibited greater variability in comparison to S. quitoense. The above, indicated the feasibility of the use of S. hirtum to broaden the genetic base of the cultivated species, with potentiality of S. psudolulo and S. vestissimum for the same purpose. The results obtained with the multiple analysis of correspondence were in agreement with those of the similarity index analysis, and the neighbor joining analysis with high “bootstrap” values, which indicates that the support of each cluster for the studied species is well represented.Se realizó un estudio de la variabilidad genética de la colección colombiana de lulo Solanum quitoense Lam y especies relacionadas de la sección Lasiocarpa, por medio de marcadores AFLP, con el fin de conocer el polimorfismo y las afinidades entre materiales y taxa. Para tal fin se emplearon marcadores moleculares AFLP, y se hicieron análisis de conglomerados, con los cuales se construyeron dendrogramas a través del algoritmo UPGMA. Los marcadores empleados mostraron valor sistemático ya que permitieron la separación de grupos por especies y entre taxa de la Amazonía y de los Andes, con aislamiento de Solanum de otras secciones, empleados como grupo de comparación. En el estudio no fue evidente el agrupamiento de los materiales por zonas de origen e igualmente no hubo un patrón de asociación de los materiales por variedad botánica: septentrionale y quitoense del taxón S. quitoense. También se observó menor variabilidad genética en las especies cultivadas S. quitoense (andina) y S. sessiliflorum (amazónica), con relación a las silvestres. Los híbridos interespecíficos entre el taxón silvestre S. hirtum y el cultivado S. quitoense y los retrocruzamientos de éstos hacia S. quitoense, incluidos en el estudio, señalaron el potencial de ampliación de la base genética del taxón cultivado por esta vía, con posibilidades en este sentido a partir de los taxa S. pseudolulo y S. vestissimum (andinos). El análisis de correspondencia múltiple y el dendrograma obtenido por el algoritmo “vecino más próximo”, exhibieron alta congruencia con el obtenido por UPGMA, con altos valores de remuestreo (“bootstrap”).

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France
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Keywords

AFLP, S, genetic base broadening, Agriculture (General), variacion genetica, Agriculture, solanum quitoense, dendrograms, clustering patterns, aflp, S1-972, molecular characterization, ampliación de la base genética dendrogramas, patrones de agrupamiento, genetic variation

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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