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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
03/06/2020 |
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Data da última atualização: |
03/06/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AMARANTE, C. V. T.; STEFFENS, C. A.; FREITAS, S. T. de; SILVEIRA, J. P. G.; DENARDI, V.; KATSURAYAMA, J. M. |
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Afiliação: |
C. V. T. Amarante, Universidade do Estado de Santa Catarina; C. A. Steffens, Universidade do Estado de Santa Catarina; SERGIO TONETTO DE FREITAS, CPATSA; J. P. G. Silveira, Universidade do Estado de Santa Catarina; V. Denardi, Universidade do Estado de Santa Catarina; J. M. Katsurayama, EPAGRI. |
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Título: |
Post bloom spraying apple trees with prohexadione-calcium and gibberellic acid affects vegetative growth, fruit mineral content and bitter pit incidence. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Acta Horticulturae, n. 1275, p. 193-200, 2020. |
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DOI: |
10.17660/ActaHortic.2020.1275.27 |
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Idioma: |
Inglês |
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Notas: |
Edição do Proceedings of the International Symposium on Strategies and Technologies to Maintain Quality and Reduce Postharvest Losses, Istanbul, Turkey, apr. 2020. |
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Conteúdo: |
Post bloom spraying of apple orchards with prohexadione-calcium (ProCa, an inhibitor of gibberellins synthesis) might reduce vegetative growth and therefore increase calcium (Ca) transport into the fruit. On the other hand, post bloom spraying with gibberellins (GAs) is used commercially on apple orchards to improve fruit skin finish, but this might promote fruit growth, increase vegetative growth and reduce Ca content in the fruit. Bitter pit (BP) is a physiological disorder caused by Ca deficiency in apples, which is also associated with increased activity of GAs in the plant. This study was carried out to assess the effects of post bloom orchard spraying with ProCa and gibberellic acid (GA3) on vegetative growth, fruit mineral content and BP incidence. The experiment was carried out in Southern Brazil. 'Catarina' and 'Fuji' apple trees were sprayed with water (control), ProCa (319 mg a.i. L?1) or GA3 (319 mg a.i. L?1) at the petal fall stage (when shoots were 5-10 cm long), with reapplication 20 days later. During the trial, trees of both cultivars were not sprayed with calcium chloride in all treatments (to encourage the occurrence of BP). In both cultivars, yield and average fruit weight at harvest was not different among treatments, while vegetative growth was reduced by ProCa and increased by GA3 in comparison to the control. In fruit of both cultivars harvested at the commercial maturity and then left in cold storage (0±0.5°C/90-95% RH) for four months, followed by five days of shelf life (20±4°C/60-70% RH), ProCa reduced while GA3 increased the occurrence of BP in comparison to the control. In both cultivars, fruit from trees treated with ProCa had higher content of Ca and lower (K+Mg+N)/Ca ratio in the peel tissue at the distal end than those from trees treated with GA3. The results show that post bloom spraying with GA3 increases the risk of BP. On the other hand, the inhibition of active GAs synthesis by post bloom spraying with ProCa reduces vegetative growth, reduces the contents of K, Mg and N while increases the content of Ca in the fruit, and therefore reduces the risk of BP. MenosPost bloom spraying of apple orchards with prohexadione-calcium (ProCa, an inhibitor of gibberellins synthesis) might reduce vegetative growth and therefore increase calcium (Ca) transport into the fruit. On the other hand, post bloom spraying with gibberellins (GAs) is used commercially on apple orchards to improve fruit skin finish, but this might promote fruit growth, increase vegetative growth and reduce Ca content in the fruit. Bitter pit (BP) is a physiological disorder caused by Ca deficiency in apples, which is also associated with increased activity of GAs in the plant. This study was carried out to assess the effects of post bloom orchard spraying with ProCa and gibberellic acid (GA3) on vegetative growth, fruit mineral content and BP incidence. The experiment was carried out in Southern Brazil. 'Catarina' and 'Fuji' apple trees were sprayed with water (control), ProCa (319 mg a.i. L?1) or GA3 (319 mg a.i. L?1) at the petal fall stage (when shoots were 5-10 cm long), with reapplication 20 days later. During the trial, trees of both cultivars were not sprayed with calcium chloride in all treatments (to encourage the occurrence of BP). In both cultivars, yield and average fruit weight at harvest was not different among treatments, while vegetative growth was reduced by ProCa and increased by GA3 in comparison to the control. In fruit of both cultivars harvested at the commercial maturity and then left in cold storage (0±0.5°C/90-95% RH) for four months, followed by f... Mostrar Tudo |
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Palavras-Chave: |
Anti-giberelina; Desordem fisiológica; Pós-pulverização; Prohexadiona-cálcio. |
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Thesagro: |
Ácido Giberélico; Cálcio; Maçã; Malus Domestica; Pós-Colheita. |
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Thesaurus Nal: |
Apples; Postharvest physiology; Postharvest technology. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03373naa a2200349 a 4500
001 2122953
005 2020-06-03
008 2020 bl uuuu u00u1 u #d
024 7 $a10.17660/ActaHortic.2020.1275.27$2DOI
100 1 $aAMARANTE, C. V. T.
245 $aPost bloom spraying apple trees with prohexadione-calcium and gibberellic acid affects vegetative growth, fruit mineral content and bitter pit incidence.$h[electronic resource]
260 $c2020
500 $aEdição do Proceedings of the International Symposium on Strategies and Technologies to Maintain Quality and Reduce Postharvest Losses, Istanbul, Turkey, apr. 2020.
520 $aPost bloom spraying of apple orchards with prohexadione-calcium (ProCa, an inhibitor of gibberellins synthesis) might reduce vegetative growth and therefore increase calcium (Ca) transport into the fruit. On the other hand, post bloom spraying with gibberellins (GAs) is used commercially on apple orchards to improve fruit skin finish, but this might promote fruit growth, increase vegetative growth and reduce Ca content in the fruit. Bitter pit (BP) is a physiological disorder caused by Ca deficiency in apples, which is also associated with increased activity of GAs in the plant. This study was carried out to assess the effects of post bloom orchard spraying with ProCa and gibberellic acid (GA3) on vegetative growth, fruit mineral content and BP incidence. The experiment was carried out in Southern Brazil. 'Catarina' and 'Fuji' apple trees were sprayed with water (control), ProCa (319 mg a.i. L?1) or GA3 (319 mg a.i. L?1) at the petal fall stage (when shoots were 5-10 cm long), with reapplication 20 days later. During the trial, trees of both cultivars were not sprayed with calcium chloride in all treatments (to encourage the occurrence of BP). In both cultivars, yield and average fruit weight at harvest was not different among treatments, while vegetative growth was reduced by ProCa and increased by GA3 in comparison to the control. In fruit of both cultivars harvested at the commercial maturity and then left in cold storage (0±0.5°C/90-95% RH) for four months, followed by five days of shelf life (20±4°C/60-70% RH), ProCa reduced while GA3 increased the occurrence of BP in comparison to the control. In both cultivars, fruit from trees treated with ProCa had higher content of Ca and lower (K+Mg+N)/Ca ratio in the peel tissue at the distal end than those from trees treated with GA3. The results show that post bloom spraying with GA3 increases the risk of BP. On the other hand, the inhibition of active GAs synthesis by post bloom spraying with ProCa reduces vegetative growth, reduces the contents of K, Mg and N while increases the content of Ca in the fruit, and therefore reduces the risk of BP.
650 $aApples
650 $aPostharvest physiology
650 $aPostharvest technology
650 $aÁcido Giberélico
650 $aCálcio
650 $aMaçã
650 $aMalus Domestica
650 $aPós-Colheita
653 $aAnti-giberelina
653 $aDesordem fisiológica
653 $aPós-pulverização
653 $aProhexadiona-cálcio
700 1 $aSTEFFENS, C. A.
700 1 $aFREITAS, S. T. de
700 1 $aSILVEIRA, J. P. G.
700 1 $aDENARDI, V.
700 1 $aKATSURAYAMA, J. M.
773 $tActa Horticulturae$gn. 1275, p. 193-200, 2020.
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