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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
25/11/2020 |
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Data da última atualização: |
25/11/2020 |
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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.; SILVEIRA, J. P. G.; DENARDI, V.; KATSURAYAMA, J. M. |
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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, Istambul, Turkey, 1275, p. 193-199, 2020. |
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Idioma: |
Inglês |
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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-gibberellin; calcium; fruit; GA3; Malus domestica Borkh; physiological disorder; postharvest. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02964naa a2200265 a 4500
001 1130319
005 2020-11-25
008 2020 bl uuuu u00u1 u #d
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
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.
653 $aanti-gibberellin
653 $acalcium
653 $afruit
653 $aGA3
653 $aMalus domestica Borkh
653 $aphysiological disorder
653 $apostharvest
700 1 $aSTEFFENS, C. A.
700 1 $aFREITAS, S. T.
700 1 $aSILVEIRA, J. P. G.
700 1 $aDENARDI, V.
700 1 $aKATSURAYAMA, J. M.
773 $tActa Horticulturae, Istambul, Turkey, 1275, p. 193-199, 2020.
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
04/05/2011 |
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Data da última atualização: |
04/05/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
-- - -- |
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Autoria: |
ARGENTA, L. C.; FAN, X.; MATTHEIS, J. |
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Afiliação: |
Epagri |
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Título: |
Impact of watercore on gas permeances and incidence of internal disorders in 'Fuji'Apples. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Postharvest Biology and Technology, Amsterdam, v. 24, p. 113-122, 2002. |
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Idioma: |
Inglês |
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Notas: |
ISSN, 09255214 |
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Conteúdo: |
The impacts of watercore on incidence of internal disorders and other physiological characteristics of ?Fuji? apples (Malus domestica Borkh) were determined following short-term exposure at 20 °C in 20 kPa CO2 (high pCO2) or long-term storage at 0.5 °C in 0.5 kPa O2+0.05 kPa CO2 (low pCO2) or 1.5 kPa O2+3 kPa CO2 (medium pCO2). CO2-injury (brown-heart) occurred in apples exposed to high pCO2 or medium pCO2, but no internal disorders were observed in fruit held at 20 °C in air or 4 months at 0.5 °C in low pCO2, regardless of watercore severity at harvest. Depending on harvest date and orchard, the severity of CO2-injury was significantly correlated with watercore severity. Watercored tissue has a lower intercellular air space volume, reduced permeance to gas diffusion and increased internal pCO2. Accumulation of ethanol and acetaldehyde occurred in watercored ?Fuji? apples even under ambient (21 kPa O2) conditions and this accumulation increased with watercore severity regardless of storage environment. © 2002 Elsevier Science B.V. All rights reserved. |
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Palavras-Chave: |
Carbon dioxide injury; Gas exchange; Watercore. |
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Categoria do assunto: |
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Marc: |
LEADER 01575naa a2200169 a 4500
001 1076108
005 2011-05-04
008 2002 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aImpact of watercore on gas permeances and incidence of internal disorders in 'Fuji'Apples.
260 $c2002
500 $aISSN, 09255214
520 $aThe impacts of watercore on incidence of internal disorders and other physiological characteristics of ?Fuji? apples (Malus domestica Borkh) were determined following short-term exposure at 20 °C in 20 kPa CO2 (high pCO2) or long-term storage at 0.5 °C in 0.5 kPa O2+0.05 kPa CO2 (low pCO2) or 1.5 kPa O2+3 kPa CO2 (medium pCO2). CO2-injury (brown-heart) occurred in apples exposed to high pCO2 or medium pCO2, but no internal disorders were observed in fruit held at 20 °C in air or 4 months at 0.5 °C in low pCO2, regardless of watercore severity at harvest. Depending on harvest date and orchard, the severity of CO2-injury was significantly correlated with watercore severity. Watercored tissue has a lower intercellular air space volume, reduced permeance to gas diffusion and increased internal pCO2. Accumulation of ethanol and acetaldehyde occurred in watercored ?Fuji? apples even under ambient (21 kPa O2) conditions and this accumulation increased with watercore severity regardless of storage environment. © 2002 Elsevier Science B.V. All rights reserved.
653 $aCarbon dioxide injury
653 $aGas exchange
653 $aWatercore
773 $tPostharvest Biology and Technology, Amsterdam$gv. 24, p. 113-122, 2002.
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