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    • Keywords


      plant genetic resources; second cycle hybrids; SRAP; generalized Procrustes analysis; molecular markers.

    • Abstract


      Five recombinant inbred lines obtained from the F2 generation of an interspecific cross between cultivar, Caimanta (Cai, Solanum lycopersicum) and wild accession, LA722 (P, S. pimpinellifolium) were crossed to obtain the second cycle hybrids (SCH). Eleven fruit quality traits were assessed in evaluating phenotypic variability among genotypes P, Cai, F1 (Cai × P), five RILs, and 10 SCH. One of the five recombinant inbred lines and three SCH had higher values than P, as the best genotype for shelf life. Sequence-related amplified polymorphism was used as the molecular method for detecting polymorphism among these 18 genotypes. The percentage of polymorphism in RILs and SCH was 61% and 66% respectively. Moreover, some bands detected in P were present in SCH. Several multivariate analyses were performed to find agreement between the phenotypic variability observed for fruit quality traits and the polymorphism obtained from sequence-related amplified polymorphism markers. A general Procrustes analysis estimated that there was a consensus proportion of 75% between phenotypic and molecular data. There was considerable preservation of some bands from the wild genotype, which could increase the variability in fruit quality traits in populations where the genetic diversity is limited.

    • Author Affiliations


      Sabina L. Mahuad1 Guillermo R. Pratta1 Gustavo R. Rodriguez1 Roxana Zorzoli2 Liliana A. Picardi2

      1. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, CC 14 S2125ZAA, Zavalla (Santa Fe), Argentina
      2. Consejo de Investigaciones de la Universidad Nacional de Rosario (CIUNR) Cátedra de Genética, Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, CC 14 S2125ZAA, Zavalla (Santa Fe), Argentina
    • Dates

  • Journal of Genetics | News

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      Posted on July 25, 2019

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