Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/160533
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dc.contributor.authorLIMA FILHO, J. M. P.pt_BR
dc.date.accessioned2015-12-22T03:02:15Z-
dc.date.available2015-12-22T03:02:15Z-
dc.date.created2008-01-30pt_BR
dc.date.issued2007pt_BR
dc.identifier.citationRevista Brasileira de Fruticultura, Jaboticabal, v. 29, n. 2, p. 355-358, ago. 2007.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/160533pt_BR
dc.descriptionThe experiment was carried out at the Embrapa Semi-Árido, Petrolina-PE, Brazil, in order to study the physiological responses of umbu plants propagated by seeds and by stem cuttings under water stress conditions, based on leaf water potential and gas exchange measurements. Data were collected in one-year plants established in pots containing 30 kg of a sandy soil and submitted to twenty-day progressive soil water deficit. The evaluations were based on leaf water potential and gas exchange data collection using psychrometric chambers and a portable infra-red gas analyzer, respectively. Plants propagated by seeds maintained a significantly higher water potential, stomatal conductance, transpiration and photosynthesis under decreasing soil water availability. However, plants propagated by stem cuttings were unable to maintain a favorable internal water balance, reflecting negatively on stomatal conductance and leaf gas exchange. This fact is probably because umbu plants propagated by stem cuttings are not prone to formation of root tubers which are reservoirs for water and solutes. Thus, the establishing of umbu plants propagated by stem cuttings must be avoided in areas subjected to soil water deficit.pt_BR
dc.language.isoporpt_BR
dc.rightsopenAccesspt_BR
dc.subjectTranspiraçãopt_BR
dc.subjectTúberapt_BR
dc.subjectCondutância estomáticapt_BR
dc.titleWater status and gas exchange of umbu plants (Spondias tuberosa Arr. Cam.) propagated by seeds and stem cuttings.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2015-12-22T03:02:15Zpt_BR
dc.subject.thesagroFotossíntesept_BR
dc.subject.thesagroPotencial Hídricopt_BR
dc.subject.thesagroUmbupt_BR
riaa.ainfo.id160533pt_BR
riaa.ainfo.lastupdate2015-12-21pt_BR
dc.contributor.institutionJosé Moacir Pinheiro Lima Filho, CPATSA.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CPATSA)

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