Breeding Theory

  • C. J. A. Shelbourne


Tony Shelbourne’s paper of 1969 on tree breeding methods was a first attempt at looking at the business of starting a tree breeding programme from scratch. The programmes for P. contorta and Douglas-fir unfortunately didn’t follow its guidelines. Burdon and Shelbourne’s (NZJFS 1(2):1174–1193, 1971) paper on breeding populations was a seminal paper, introducing the concept of breeding populations to the international literature, and this was ultimately vital in NZ and international tree breeding. Shelbourne’s review in 1972 of genotype-environment interaction in forest tree improvement proved useful in tackling this subject. Burdon, Shelbourne and Wilcox’s (Burdon et al. Advanced selection strategies. Third World Consultation on Forest Tree Breeding, Canberra and Rotorua, 1977) paper on advanced selection (AS) strategies revealed deficiencies in AS planning in breeders’ thinking. Single-tree-plots are optimal for family mean selection, but large plots per family are better for within-family selection. GCA ranking and advanced generation crossing (AS) need different mating and field designs. Shaw and Hood’s (TAG 71:392–399, 1985) paper was a wake-up call about within-family clonal selection which was pursued in the Shelbourne et al.’s Development Plan for radiata breeding. This emphasised the use of within-family selection for AS, without loss of genetic variation in the BP. Rosvall et al. (Silvae Genetica 47(5/6):307–320, 1998) showed this in a stochastic simulation of within-family clonal selection in Norway spruce.


AS Stochastic Within-family selection 


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • C. J. A. Shelbourne
    • 1
  1. 1.RotoruaNew Zealand

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