Comparative analysis of traditional and modern apricot breeding programs: A case of study with Spanish and Tunisian apricot breeding germplasm

  • Mohamed A. Batnini Université Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Génétique Moléculaire, Immunologie et Biotechnologie, Tunis
  • Lamia Krichen Université Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Génétique Moléculaire, Immunologie et Biotechnologie, Tunis
  • Hedia Bourguiba Université Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Génétique Moléculaire, Immunologie et Biotechnologie, Tunis
  • Neila Trifi-Farah Université Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Génétique Moléculaire, Immunologie et Biotechnologie, Tunis
  • David Ruiz CEBAS-CSIC, Dept. Mejora Vegetal, Murcia
  • Pedro Martínez-Gómez CEBAS-CSIC, Dept. Mejora Vegetal, Murcia
  • Manuel Rubio CEBAS-CSIC, Dept. Mejora Vegetal, Murcia
Keywords: traditional breeding, modern breeding, molecular markers, SSRs, phenotype, association genetic

Abstract

Traditional plant breeding is based on the observation of variation and the selection of the best phenotypes, whereas modern breeding is characterised by the use of controlled mating and the selection of descendants using molecular markers. In this work, a comparative analysis of genetic diversity in a traditional (Tunisian) and a modern (Spanish) apricot breeding programme was performed at the phenotypic and molecular level using simple sequence repeat (SSR) markers. Seven phenotypic traits were evaluated in 42 Tunisian apricot accessions and 30 genotypes from the Spanish apricot programme. In addition, 20 SSR markers previously described as linked to specific phenotypic traits were assayed. Results showed that modern breeding using controlled crosses increases the size of the fruit. The fruit weight average observed in the Tunisian cultivars was of 20.15 g. In the case of traditional Spanish cultivars the average weight was 47.12 g, whereas the average weight of the other progenitors from France, USA and South Africa was 72.85 g. Finally, in the new releases from the CEBAS-CSIC breeding programme, the average weight was 72.82 g. In addition, modern bred cultivars incorporate desirable traits such as self-compatibility and firmness. Cluster and structural analysis based on SSR data clearly differentiates the genotypes according to their geographic origin and pedigree. Finally, results showed an association between some alleles of PaCITA7 and UDP96003 SSR markers with apricot fruit weight, one allele of UDAp407 marker with fruit firmness and one allele of UDP98406 marker with fruit ripening.

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Published
2016-08-31
How to Cite
BatniniM. A., KrichenL., BourguibaH., Trifi-FarahN., RuizD., Martínez-GómezP., & RubioM. (2016). Comparative analysis of traditional and modern apricot breeding programs: A case of study with Spanish and Tunisian apricot breeding germplasm. Spanish Journal of Agricultural Research, 14(3), e0706. https://doi.org/10.5424/sjar/2016143-8638
Section
Plant breeding, genetics and genetic resources