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A preliminary evaluation of the effects of pollinator enhancement and gibberellins on the fruit set and fruit shape of 'Conference' pears - Short Communication

Author

Listed:
  • Jolien Smessaert

    (Laboratory for Fruit Breeding and Biotechnology, University of Leuven, Leuven, Belgium)

  • Gaby Van Kemenade

    (Plant Conservation and Population Biology, University of Leuven, Leuven, Belgium)

  • Anneleen Arnoys

    (Laboratory for Fruit Breeding and Biotechnology, University of Leuven, Leuven, Belgium)

  • Olivier Honnay

    (Plant Conservation and Population Biology, University of Leuven, Leuven, Belgium)

  • Wanness Keulemans

    (Laboratory for Fruit Breeding and Biotechnology, University of Leuven, Leuven, Belgium)

Abstract

'Conference' (Pyrus communis L.) is a self-incompatible cultivar, although it can also set fruit parthenocarpically. Stimulating parthenocarpy through gibberellin (GA) applications increases the fruit set, but it may also negatively affect the fruit size and shape. The aim of this study was to investigate the effects of a bumblebee (BB) amendment in combination with a GA treatment on the fruit set and fruit shape of 'Conference' pears. In the first experiment, we applied three treatments (GA, GA + BB & control) in a 'Conference' monoculture. In the second experiment, we applied two treatments (GA & GA + BB) in a 'Conference' orchard inter-planted with 'Concorde' as pollinizer trees. Both experiments showed that the GA application and bumblebee supplementation did not affect the fruit set. However, the BB treatment resulted in significantly higher amounts of normally shaped pears. Trees closer to the bumblebee hive had more normal shaped pears than trees further away.

Suggested Citation

  • Jolien Smessaert & Gaby Van Kemenade & Anneleen Arnoys & Olivier Honnay & Wanness Keulemans, 2020. "A preliminary evaluation of the effects of pollinator enhancement and gibberellins on the fruit set and fruit shape of 'Conference' pears - Short Communication," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 47(4), pages 211-216.
    • Handle: RePEc:caa:jnlhor:v:47:y:2020:i:4:id:123-2019-hortsci
    DOI: 10.17221/123/2019-HORTSCI
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