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Cultivar differences in the stomatal characteristics of cut roses grown at high relative humidity

2009Journal article Restricted access
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dc.contributor.authorFanourakis, D.
dc.contributor.authorTapia, A.
dc.contributor.authorHeuvelink, E.
dc.contributor.authorCarvalho, S. M. P.
dc.date.accessioned2011-10-23T15:17:19Z
dc.date.available2011-10-23T15:17:19Z
dc.date.issued2009
dc.description.abstractHigh relative air humidity (RH>85%) during cultivation is known to reduce the vase life of cut roses, but the magnitude of such effect is cultivar dependent. The reasons behind this genotypic variation are not yet known. In this study, the stomatal density and stomatal responses to two closing stimuli (i.e. desiccation and abscisic acid (ABA) application) were evaluated using detached fully expanded leaves of two contrasting rose cultivars in their sensitivity to high RH (‘Frisco’ and ‘Prophyta’) which were grown at moderate (60%) and high (90%) RH. High RH significantly increased the stomatal density in both cultivars, but the effect was stronger in the tolerant cultivar (14% increase for ‘Frisco’, 8% increase for ‘Prophyta’). ‘Frisco’ also showed a higher stomatal density at moderate RH (53 stomata/mm2) as compared to the sensitive cultivar (43 stomata/mm2). Moreover, high RH decreased the speed and the degree to which stomata responded to different closing stimuli in both cultivars, resulting in higher transpiration rates. This effect was more pronounced in the sensitive cultivar. It was concluded that the tolerance to high RH during cultivation is related to more responsive stomata, while the stomatal density is apparently an irrelevant character. Furthermore, this study showed that the rose guard cell dimensions are not representative for the pore dimensions.por
dc.identifier.citationFANOURAKIS, D....[et al] - Cultivar differences in the stomatal characteristics of cut roses grown at high relative humidity. In International Symposium on Postharvest quality of Ornamental plants, 9, Copenhagen, Dinamarca, 11-14 Agosto, 2008 - Proceedings of the 9th International Symposium on Postharvest quality of Ornamental plants. ISHS Acta Horticulturae. ISSN 0567-7572. N.º 847 (2009). p. 251-258por
dc.identifier.urihttp://hdl.handle.net/10400.14/6963
dc.language.isoengpor
dc.peerreviewednopor
dc.subjectAbscisic acidpor
dc.subjectDesiccationpor
dc.subjectRosa hybridapor
dc.subjectStomatal densitypor
dc.subjectStomatal sizepor
dc.subjectPore Sizepor
dc.titleCultivar differences in the stomatal characteristics of cut roses grown at high relative humiditypor
dc.typejournal article
dspace.entity.typePublication
person.familyNameFanourakis
person.familyNameCarvalho
person.givenNameDimitrios
person.givenNameSusana M.P.
person.identifier194747
person.identifier.ciencia-id5E16-859A-37A4
person.identifier.orcid0000-0002-6319-4223
person.identifier.orcid0000-0001-7157-1079
person.identifier.ridI-7184-2013
person.identifier.scopus-author-id35361862300
person.identifier.scopus-author-id7005619826
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication02a2670a-940c-4ffa-95a4-145941dcd616
relation.isAuthorOfPublicatione52d58d9-9c7d-4a20-afbd-04195a6ab912
relation.isAuthorOfPublication.latestForDiscoverye52d58d9-9c7d-4a20-afbd-04195a6ab912

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