Chilling requirements of ten sweet cherry cultivars in a mild winter location in Chile

A. Cortés, E. Gratacós

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations


Given the marked seasonality of sweet cherry (Prunus avium L.) production, it can be profitable to extend the harvest period and consequently prolong the sales period. Possible solutions for this are the use of different varieties and the relocation of production. The expansion of production into less cold zones has been limited by the chilling requirements of the cherry varieties. Recently, due to the appearance in Chile of new varieties having potential variability in their chilling requirements, a study was initiated to evaluate their productivity and fruit quality. Several replicated field experiments were done in a high density cherry orchard located at the La Palma Experimental Station of the Pontificia Universidad Catolica de Valparaiso. The capacity of sweet cherry buds to overcome endodormancy from exposure to two different chilling hour accumulation cycles was evaluated. The cultivars evaluated were: 'Garnet', 'Burlat', 'Brooks', 'Lapins', 'Bing', 'Newstar', 'Ruby', 'Van', 'Somerset' and 'Celeste'. Of these, seven ('Burlat', 'Brooks', 'Lapins', 'Newstar', 'Ruby', 'Van' and 'Somerset') overcame bud dormancy after being exposed to variable numbers of hours of continuous exposure to 6°C. The same cultivars had higher levels of budbreak under field chilling conditions, and 'Celeste' overcame bud dormancy as well.

Original languageEnglish
Title of host publicationProceedings of the 5th International Cherry Symposium
PublisherInternational Society for Horticultural Science
Number of pages6
ISBN (Print)9789066055513
StatePublished - 2008
Event5th International Cherry Symposium - Bursa, Turkey
Duration: 6 Jun 200510 Jun 2005

Publication series

NameActa Horticulturae
Volume795 PART 2
ISSN (Print)0567-7572


Conference5th International Cherry Symposium


  • Bud break
  • Chilling hours
  • Chilling units
  • Endodomancy
  • Primus avium


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