Kinetic parameters related to nitrogen uptake efficiency of pear trees (Pyrus communis)

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Autor(es): dc.contributorUniversidade Federal de Santa Catarina (UFSC)-
Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.contributorAgr Res Ctr Temperate Climate Fruit-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSete, Paula Beatriz-
Autor(es): dc.creatorPaula, Betania Vahl de-
Autor(es): dc.creatorSouza Kulmann, Matheus Severo de-
Autor(es): dc.creatorRossi, Andrea de-
Autor(es): dc.creatorRozane, Danilo Eduardo [UNESP]-
Autor(es): dc.creatorHindersmann, Jacson-
Autor(es): dc.creatorKrug, Amanda Veridiana-
Autor(es): dc.creatorBrunetto, Gustavo-
Data de aceite: dc.date.accessioned2022-02-22T00:11:23Z-
Data de disponibilização: dc.date.available2022-02-22T00:11:23Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-10-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.scienta.2020.109530-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197133-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197133-
Descrição: dc.descriptionGenetic improvement programs for pear trees in Brazil are characterized by rootstock (hypobiotic) selection mainly considering physiological attributes such as vigor, breakage of dormancy, propagation easiness, and sanitary characteristics, such as resistance to pests and diseases. However, kinetic parameters that determine nutrient uptake efficiency are not usually considered as, for example, nitrogen (N) in forms of NO3- and NH4+. The objective of this study was to evaluate the kinetic parameters related to N uptake in pear selection '54' and '971' as additional criteria for rootstock selection. The plants were acclimatized in a half-strength Hoagland solution and tested to assess the depletion of the internal reserves at 15 and 30 days, in CaSO4 solution to evaluate the depletion period during 65 h. The selection '971' showed more significant NO3- and NH4+ uptake efficiency, because presented higher V-max values and Influx. The internal reserve depletion (IRD) period for the evaluated selections was 30 days in CaSO4 solution. The evaluation period of the depletion period to reach the C-max for selections '971' and '54' was 64 and 65 h for NO3- respectively, and 65 h for NH4+. The selection '971' had a higher affinity with the NO3- ion when correlated with the physiological parameters of minimum fluorescence (Fo) and electron transport rate (ETRm).-
Descrição: dc.descriptionUniv Fed Santa Catarina, Rodovia Admar Gonzaga 1346, BR-88034000 Florianopolis, SC, Brazil-
Descrição: dc.descriptionUniv Fed Santa Maria, Ave Roraima 1000,CP 221, BR-97105900 Santa Maria, RS, Brazil-
Descrição: dc.descriptionAgr Res Ctr Temperate Climate Fruit, BR 285,Km 115, BR-95200000 Km, RS, Brazil-
Descrição: dc.descriptionSao Paulo State Univ Julio de Mesquita Filho, Registro Campus,Rua Nelson Brihi Badur 430, BR-13900000 Registro, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ Julio de Mesquita Filho, Registro Campus,Rua Nelson Brihi Badur 430, BR-13900000 Registro, SP, Brazil-
Formato: dc.format7-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationScientia Horticulturae-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectNO3--
Palavras-chave: dc.subjectNH4+-
Palavras-chave: dc.subjectRootstock selection-
Palavras-chave: dc.subjectChlorophyll fluorescence a-
Título: dc.titleKinetic parameters related to nitrogen uptake efficiency of pear trees (Pyrus communis)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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