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Seasonal changes in CO2 assimilation in leaves of seedlings and micropropagated plants of Carob tree established in the field

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dc.contributor.authorOsório, Maria Leonor
dc.contributor.authorOsório, Júlio
dc.contributor.authorDavid, Maria Manuela
dc.contributor.authorCorreia, Maria João
dc.contributor.authorRomano, Anabela
dc.date.accessioned2012-04-19T13:35:29Z
dc.date.available2012-04-19T13:35:29Z
dc.date.issued2009
dc.date.updated2012-04-12T15:40:01Z
dc.description.abstractIn this communication we evaluate the field performance of two micropropagated Portuguese carob cultivars (Galhosa and Mulata) throughout the season, particularly at extreme conditions of light and temperature. Two irrigated plots were established in the field: 1) micropropagated plants, vs 2) seedlings. During the first year following transplantation to the field, we followed net photosynthetic rate, stomatal conductance, transpiration rate, chlorophyll a fluorescence and leaf contents in chlorophyll, carotenoids and protein. No significant differences were detected between seedlings and micropropagated plants along the year. However, at the end of summer, despite irrigation, the photosynthetic rate (NP), the quantum yield of PSII (fPSII) and the intrinsic efficiency of open PSII reaction centers (F’v/F’m) declined, concomitantly with the increase of the thermal energy dissipation at the PSII (NPQ). As the maximal photochemical efficiency of PSII (Fv/Fm) was maintained high (0.82), these results indicate that regulated thermal dissipation in light harvesting complexes was promoted in order to avoid photoinhibition. After the first growth period in the field, data from micropropagated plants did not differ from seedlings, and those plants showed the characteristic behaviour of plants well adapted to Mediterranean climates. So, in vitro propagation could be use as a promising alternative to traditional propagation and establishment of carob orchards.por
dc.identifier.citationOsório, Maria Leonor; Osório, Júlio; David, Maria Manuela; Correia, Maria João; Romano, Anabela. Seasonal changes in CO2 assimilation in leaves of seedlings and micropropagated plants of carob tree established in the field. Trabalho apresentado em III International Symposium on Acclimatization and Establishment of Micropropagated Plants. In ISHS Acta Horticulturae, Faro, 2009.por
dc.identifier.issn978-90-66050-87-7
dc.identifier.otherAUT: JCO00381; JOS01477; MDA00369; ARO01015;
dc.identifier.urihttp://hdl.handle.net/10400.1/1058
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherISHSpor
dc.subjectPhotosynthesispor
dc.subjectCeratonia siliquapor
dc.subjectMicropropagated plantspor
dc.subjectField establishmentpor
dc.titleSeasonal changes in CO2 assimilation in leaves of seedlings and micropropagated plants of Carob tree established in the fieldpor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceFaropor
oaire.citation.titleActa Horticulturaepor
person.familyNameOsório
person.familyNameOsório
person.familyNameDavid
person.familyNameRomano
person.givenNameMaria Leonor
person.givenNameJúlio
person.givenNameMaria Manuela
person.givenNameAnabela
person.identifier.ciencia-idE31B-16E0-7562
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0002-7713-6497
person.identifier.orcid0000-0002-4054-4091
person.identifier.orcid0000-0001-6251-7222
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridN-8024-2013
person.identifier.scopus-author-id7006394339
person.identifier.scopus-author-id9938818600
person.identifier.scopus-author-id7402103697
person.identifier.scopus-author-id56249997600
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscoveryf4547ef6-b9f9-49e6-a7b3-ad71f623cfdf

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