Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 33799
Title Fruit set and the effective pollination period in apple and pear as affected by bloom and post-bloom temperature.
Author(s) Tromp, J.; Borsboom, O.
Source Acta Horticulturae 423 (1996). - ISSN 0567-7572 - p. 193 - 199.
Department(s) Horticultural Supply Chains
Publication type Non-refereed article in scientific journal
Publication year 1996
Abstract Under controlled temperature conditions fruit set and the effective pollination period (EPP) of pear cv. Doyenné du Comice and apple cv. Golden Delicious were studied at 4 temperature regimes, i.e. 13°(bloom)-13°C (post-bloom), 13–17, 17–17, and 17–13. The post-bloom temperature was applied from 1 day after the end of bloom. Fruit set was determined 3 and 6 weeks after bloom. Fruit set at 3 weeks was very high in pear and apple. There were hardly any differences between the various temperature regimes. A severe fruit drop occurred between 3 and 6 weeks after bloom when post-bloom temperature was high. The effect of bloom temperature on fruit set was very small. The data for pear indicate that the EPP is extended somewhat at the high bloom temperature. In apple the EPP was about the same in all treatments. The data suggest that final fruit set in Doyenné du Comice as well as in Golden Delicious is mainly determined by the post-bloom temperature. Bloom temperature is not relevant as long as pollination and the EPP do not limit fruit set.
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