Estimating the genetic value of F1 apple progenies for irregular bearing during first years of production

  • Jean-Baptiste Durand Grenoble University, Laboratoire Jean Kuntzmann, BP53, F-38041 Grenoble Cedex 9, France CIRAD/Inria, Virtual Plants Team, UMR AGAP, F-34095 Montpellier, France,
  • Baptiste Guitton CIRAD, UMR AGAP, F-34398 Montpellier, France
  • Jean Peyhardi CIRAD/Inria, Virtual Plants Team, UMR AGAP, F-34095 Montpellier, France, IInstitut de Mathématiques et de Modélisation de Montpellier, Université Montpellier 2, F-34095 Montpellier, France
  • Yan Holtz INRA, AFEF Team, UMR AGAP, F-34398 Montpellier, France
  • Yann Guédon CIRAD/Inria, Virtual Plants Team, UMR AGAP, F-34095 Montpellier, France
  • Catherine Trottier Institut de Mathématiques et de Modélisation de Montpellier, Université Montpellier 2, F-34095 Montpellier, France
  • Evelyne Costes CIRAD, UMR AGAP, F-34398 Montpellier, France
Keywords: alternation indices, biennial bearing, cultivar breeding, linear mixed model, Malus x domestica, QTL detection

Abstract

Flowering regularity in apple trees during the beginning of their mature phase was assessed using new descriptors based on annual yields. To allow genotype evaluation at reasonable sampling costs, they were approximated using subsamples of annual shoot sequences at axis scale. The approximation provided a good discrimination between regular and alternate bearing genotypes. QTLs were detected for some descriptors.
Published
2013-06-03
Issue
FSPM2013
Section
1A Modelling plant structure
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