Female genitor effect on the juvenile period of olive seedlings

  • Moral J
  • Díez C
  • León L
 et al. 
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Abstract

Shortening the juvenile period (JP) is one of the main strategies to increase the efficiency of olive breeding programs due to the long generation time of this species. Seedling vigor has been reported to be negatively associated to the length of the JP. In the present work we analyzed the influence of the female genitor on the length of the JP of olive seedlings, their vigor (plant height and trunk diameter), and the relationship between seedling vigor and JP using 3650 seedlings from 10 female genitors evaluated over 14 years. Overall, the length of the JP significantly varied for the female genitor and year of germination. Female genitors evaluated were classified into three groups according to the length of the JP of their progeny, as follows: short ('Arbequina' and 'UCI 7-34'); medium ('Lechín de Sevilla', 'Manzanilla de Sevilla', 'Picual', 'UCI 11-28' and 'Zaity'); and long JP ('Frantoio', 'Memecik' and 'UCI 10-30'). Vigor, measured as the height of the seedling at planting, was significantly correlated (P

Author-supplied keywords

  • Breeding
  • Juvenile phase
  • Olea europaea
  • Selection
  • Vigor

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Authors

  • Raul de la RosaInstituto Andaluz de Investigacion y Formacion Agraria Pesquera Alimentaria y de la Produccion Ecologica

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  • C. M. Díez

  • L. León

  • F. Santos-Antunes

  • D. Barranco

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