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 | Acesso ao texto completo restrito à biblioteca da Embrapa Tabuleiros Costeiros. Para informações adicionais entre em contato com cpatc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
04/11/2024 |
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Data da última atualização: |
05/11/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO, L. M. de; MELO, E. de O. L.; SILVA FILHO, F. S.; ANJOS, J. L. dos; BORGES, A. L.; SILVA, A. J. da; SOBRAL, L. F.; CARVALHO, H. W. L. de. |
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Afiliação: |
LUCIANA MARQUES DE CARVALHO, CPATC; EDUARDA DE OLIVEIRA LOPES MELO, UNIVERSIDADE FEDERAL DE SERGIPE; FLAVIO SEVERO DA SILVA FILHO, UNIVERSIDADE FEDERAL DE SERGIPE; JOEZIO LUIZ DOS ANJOS, CPATC; ANA LUCIA BORGES, CNPMF; AIRON JOSE DA SILVA, UNIVERSIDADE FEDERAL DE SERGIPE; LAFAYETTE FRANCO SOBRAL, CPATC; HELIO WILSON DE LEMOS CARVALHO, CPATC. |
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Título: |
Nitrogen rates-influence on proline and total nitrogen accumulation and fruit yield of young ‘Pera’ sweet orange on three rootstocks grown under rainfed condition. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Scientia Horticulturae, 338, 113755, 2024. |
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DOI: |
https://doi.org/10.1016/j.scienta.2024.113755 |
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Idioma: |
Inglês |
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Conteúdo: |
In Brazilian Northeast, most of citrus orchards are submitted to seasonal water deficiency, because they are grown under rainfed condition. Grafting sweet orange trees onto drought-tolerant rootstock, such as ‘Rangpur’ lime, is the most used strategy to cope water deficit. However, some studies showed that adequate leaf nitrogen levels can reduce water stress symptoms in citrus. The purpose of this study was to investigate the influence of nitrogen (N) rates on proline and nitrogen leaf contents and fruit production in 4–9 years-old ‘Pera’ sweet orange onto three citrus rootstocks, grown without irrigation. Three simultaneous experiments were carried out with sweet orange trees grafted on ‘Rangpur’ lime, ‘Sunki Tropical’ mandarin or ‘San Diego’ citrandarin during five years. Aiming to that, proline, chlorophyll, and total nitrogen leaf contents, photosynthetic attributes, total tree height, canopy volume, N-use efficiency in fruit yield and productive performance were evaluated in response to N rates. After five years, effects on fruit production could be verified just in trees on ‘Rangpur’ and ‘Sunki Tropical’. Trees on ‘San Diego’ presented changes in tree growth and fruit quality. In contrast, proline accumulation varied with rootstock, season, nitrogen leaf contents and N rates. The greatest content was verified in the fifth year of N rates application, particularly on the driest season. In response to N rates, ‘Sunki Tropical’ induced proline accumulation up to a maximum in areas with moisture availability, whereas ‘Rangpur’ and ‘San Diego’ induced increasing increases. The results indicated that proline and total N leaf contents are interdependent, closely related to N fertilization and dependent on rootstock and water availability. It is concluded that the N rates favor increases in PRO content independent to the rootstocks, ‘Sunki Tropical’ mandarin favors greater proline accumulation and water savings in years with longer periods of water deficit, ‘Rangpur’ lime, followed by ‘San Diego’, induces the greatest PRO contents in years with frequent short dry periods, which suggests greater resilience to changing climate, and ‘San Diego’ demands less N fertilizer than ‘Rangpur’ lime and ‘Sunki Tropical’ mandarin to fruit yield. MenosIn Brazilian Northeast, most of citrus orchards are submitted to seasonal water deficiency, because they are grown under rainfed condition. Grafting sweet orange trees onto drought-tolerant rootstock, such as ‘Rangpur’ lime, is the most used strategy to cope water deficit. However, some studies showed that adequate leaf nitrogen levels can reduce water stress symptoms in citrus. The purpose of this study was to investigate the influence of nitrogen (N) rates on proline and nitrogen leaf contents and fruit production in 4–9 years-old ‘Pera’ sweet orange onto three citrus rootstocks, grown without irrigation. Three simultaneous experiments were carried out with sweet orange trees grafted on ‘Rangpur’ lime, ‘Sunki Tropical’ mandarin or ‘San Diego’ citrandarin during five years. Aiming to that, proline, chlorophyll, and total nitrogen leaf contents, photosynthetic attributes, total tree height, canopy volume, N-use efficiency in fruit yield and productive performance were evaluated in response to N rates. After five years, effects on fruit production could be verified just in trees on ‘Rangpur’ and ‘Sunki Tropical’. Trees on ‘San Diego’ presented changes in tree growth and fruit quality. In contrast, proline accumulation varied with rootstock, season, nitrogen leaf contents and N rates. The greatest content was verified in the fifth year of N rates application, particularly on the driest season. In response to N rates, ‘Sunki Tropical’ induced proline accumulation up to a maximu... Mostrar Tudo |
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Thesagro: |
Citricultura; Enxerto; Fruta Tropical; Laranja Doce; Laranja Pêra; Nitrogênio; Planta Porta-Enxerto. |
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Thesaurus Nal: |
Citrus; Oranges; Tropical and subtropical fruits. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03403naa a2200337 a 4500
001 2168795
005 2024-11-05
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scienta.2024.113755$2DOI
100 1 $aCARVALHO, L. M. de
245 $aNitrogen rates-influence on proline and total nitrogen accumulation and fruit yield of young ‘Pera’ sweet orange on three rootstocks grown under rainfed condition.$h[electronic resource]
260 $c2024
520 $aIn Brazilian Northeast, most of citrus orchards are submitted to seasonal water deficiency, because they are grown under rainfed condition. Grafting sweet orange trees onto drought-tolerant rootstock, such as ‘Rangpur’ lime, is the most used strategy to cope water deficit. However, some studies showed that adequate leaf nitrogen levels can reduce water stress symptoms in citrus. The purpose of this study was to investigate the influence of nitrogen (N) rates on proline and nitrogen leaf contents and fruit production in 4–9 years-old ‘Pera’ sweet orange onto three citrus rootstocks, grown without irrigation. Three simultaneous experiments were carried out with sweet orange trees grafted on ‘Rangpur’ lime, ‘Sunki Tropical’ mandarin or ‘San Diego’ citrandarin during five years. Aiming to that, proline, chlorophyll, and total nitrogen leaf contents, photosynthetic attributes, total tree height, canopy volume, N-use efficiency in fruit yield and productive performance were evaluated in response to N rates. After five years, effects on fruit production could be verified just in trees on ‘Rangpur’ and ‘Sunki Tropical’. Trees on ‘San Diego’ presented changes in tree growth and fruit quality. In contrast, proline accumulation varied with rootstock, season, nitrogen leaf contents and N rates. The greatest content was verified in the fifth year of N rates application, particularly on the driest season. In response to N rates, ‘Sunki Tropical’ induced proline accumulation up to a maximum in areas with moisture availability, whereas ‘Rangpur’ and ‘San Diego’ induced increasing increases. The results indicated that proline and total N leaf contents are interdependent, closely related to N fertilization and dependent on rootstock and water availability. It is concluded that the N rates favor increases in PRO content independent to the rootstocks, ‘Sunki Tropical’ mandarin favors greater proline accumulation and water savings in years with longer periods of water deficit, ‘Rangpur’ lime, followed by ‘San Diego’, induces the greatest PRO contents in years with frequent short dry periods, which suggests greater resilience to changing climate, and ‘San Diego’ demands less N fertilizer than ‘Rangpur’ lime and ‘Sunki Tropical’ mandarin to fruit yield.
650 $aCitrus
650 $aOranges
650 $aTropical and subtropical fruits
650 $aCitricultura
650 $aEnxerto
650 $aFruta Tropical
650 $aLaranja Doce
650 $aLaranja Pêra
650 $aNitrogênio
650 $aPlanta Porta-Enxerto
700 1 $aMELO, E. de O. L.
700 1 $aSILVA FILHO, F. S.
700 1 $aANJOS, J. L. dos
700 1 $aBORGES, A. L.
700 1 $aSILVA, A. J. da
700 1 $aSOBRAL, L. F.
700 1 $aCARVALHO, H. W. L. de
773 $tScientia Horticulturae, 338, 113755, 2024.
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