Flowering of kiwifruit (Actinidia deliciosa) is reduced by long photoperiods

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dc.contributor.authorSnelgar, W. P.
dc.contributor.authorClearwater, Michael J.
dc.contributor.authorWalton, E. F.
dc.date.accessioned2009-08-04T23:25:40Z
dc.date.available2009-08-04T23:25:40Z
dc.date.issued2007
dc.description.abstractMature kiwifruit (Actinidia deliciosa ‘Hayward’) vines grown under standard orchard management were exposed to 16-h photoperiods from the longest day in summer until after leaf fall in autumn. Photoperiod extension was achieved with tungsten halogen lamps that produced 2–8 µmols m–2 s–1 photosynthetically active radiation. Long day treatments did not affect fruit dry matter or fruit weight at harvest during the growing season that the treatments were applied or during the following growing season. However, flowering was reduced by 22% during the spring following treatment application. As this reduction in flowering was not accompanied by a decrease in budbreak, the long day effect is not consistent with a delay in the onset of winter chilling. It is suggested therefore, that the observed reduction in flowering may be because of a diminution of floral evocation.en
dc.format.mimetypeapplication/pdf
dc.identifier.citationSnelgar, W. P., Clearwater, M. J. & Walton, E. F. (2007). Flowering of kiwifruit (Actinidia deliciosa) is reduced by long photoperiods. New Zealand Journal of Crop and Horticultural Science, 35(1), 33-38.en
dc.identifier.doi10.1080/01140670709510165en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/2739
dc.language.isoen
dc.publisherRSNZ Publishingen_NZ
dc.relation.isPartOfNew Zealand Journal of Crop and Horticultural Scienceen_NZ
dc.relation.urihttp://www.royalsociety.org.nz/Site/publish/Journals/nzjchs/2007/004.aspxen
dc.rightsThis article has been published in the journal: New Zealand Journal of Crop and Horticultural Science. © 2007The Royal Society of New Zealand. Use with permission.en
dc.subjectwinter chillingen
dc.subjectfloral evocationen
dc.subjectfloral commitmenten
dc.subjectfloweringen
dc.subjectActinidiaen
dc.titleFlowering of kiwifruit (Actinidia deliciosa) is reduced by long photoperiodsen
dc.typeJournal Articleen
pubs.begin-page33en_NZ
pubs.elements-id33787
pubs.end-page38en_NZ
pubs.issue1en_NZ
pubs.volume35en_NZ
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