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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
26/01/2017 |
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Data da última atualização: |
26/01/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FRANCESCATO, P.; SILVA, A. L.; PETRI, J. L.; COUTO, M.; LEITE, G. B.; RACSKO, J. |
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Título: |
Quality of apple flowers grown in different latitudes. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Acta Horticulturae , Leuven, n. 1130, p. 95-102, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Several factors affect the flower formation process of temperate fruit species, such as cultivar, geographic location, chilling unit accumulation, climatic conditions, etc. In spite of numerous studies on the process of apple flower bud formation, little attention has been given to the apple flower quality growing under inadequate chilling conditions. In order to evaluate apple flower quality two cultivars, 'Gala' and 'Fuji', were studied in two different latitudes; in Southern Brazil (26°50'S lat., 50°58'W long.) and in the Midwestern United States, in Ohio (40°44'N lat., 81°54'W long.). Female and male floral organs, as well as floral biological characteristics of king flowers from apple spur buds were assessed at balloon stage. Pistil length and weight, ovary diameter, number of anthers per flower, pollen germination, pollen grains per anther and flower, and stigmatic receptivity were calculated. Apple trees in Brazil were sprayed with a rest breaking compound to complete chilling requirements. Female floral organs of both cultivars were considerably larger in the USA compared to Brazil. Pollen germination was 12-13% higher ('Gala' and 'Fuji', respectively) in the USA than in Brazil. Large differences were found between USA and Brazil both in the number of pollen grains per anther and per flower. Apple flowers from the Midwestern United States, where climatic conditions are favorable for apple growing, produced more pollen grains than those in Southern Brazil, especially in 'Fuji' flowers (183.392 and 50.749 pollen grains/flower, respectively). In Caçador, maximum stigmatic receptivity in apple was observed at anthesis. Differently, stigmas of apple flowers from Wooster reached optimum receptivity 24-48 h after flower opening. As a conclusion, climatic conditions appeared to be important factors in determining apple flower quality, and consequently, the potential for fertilization and fruit set. MenosSeveral factors affect the flower formation process of temperate fruit species, such as cultivar, geographic location, chilling unit accumulation, climatic conditions, etc. In spite of numerous studies on the process of apple flower bud formation, little attention has been given to the apple flower quality growing under inadequate chilling conditions. In order to evaluate apple flower quality two cultivars, 'Gala' and 'Fuji', were studied in two different latitudes; in Southern Brazil (26°50'S lat., 50°58'W long.) and in the Midwestern United States, in Ohio (40°44'N lat., 81°54'W long.). Female and male floral organs, as well as floral biological characteristics of king flowers from apple spur buds were assessed at balloon stage. Pistil length and weight, ovary diameter, number of anthers per flower, pollen germination, pollen grains per anther and flower, and stigmatic receptivity were calculated. Apple trees in Brazil were sprayed with a rest breaking compound to complete chilling requirements. Female floral organs of both cultivars were considerably larger in the USA compared to Brazil. Pollen germination was 12-13% higher ('Gala' and 'Fuji', respectively) in the USA than in Brazil. Large differences were found between USA and Brazil both in the number of pollen grains per anther and per flower. Apple flowers from the Midwestern United States, where climatic conditions are favorable for apple growing, produced more pollen grains than those in Southern Brazil, especially ... Mostrar Tudo |
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Palavras-Chave: |
flower morphology; Malus domestica Borkh; ovary; pistil; pollen germination; stigmatic receptivity. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02623naa a2200253 a 4500
001 1125953
005 2017-01-26
008 2016 bl uuuu u00u1 u #d
100 1 $aFRANCESCATO, P.
245 $aQuality of apple flowers grown in different latitudes.$h[electronic resource]
260 $c2016
520 $aSeveral factors affect the flower formation process of temperate fruit species, such as cultivar, geographic location, chilling unit accumulation, climatic conditions, etc. In spite of numerous studies on the process of apple flower bud formation, little attention has been given to the apple flower quality growing under inadequate chilling conditions. In order to evaluate apple flower quality two cultivars, 'Gala' and 'Fuji', were studied in two different latitudes; in Southern Brazil (26°50'S lat., 50°58'W long.) and in the Midwestern United States, in Ohio (40°44'N lat., 81°54'W long.). Female and male floral organs, as well as floral biological characteristics of king flowers from apple spur buds were assessed at balloon stage. Pistil length and weight, ovary diameter, number of anthers per flower, pollen germination, pollen grains per anther and flower, and stigmatic receptivity were calculated. Apple trees in Brazil were sprayed with a rest breaking compound to complete chilling requirements. Female floral organs of both cultivars were considerably larger in the USA compared to Brazil. Pollen germination was 12-13% higher ('Gala' and 'Fuji', respectively) in the USA than in Brazil. Large differences were found between USA and Brazil both in the number of pollen grains per anther and per flower. Apple flowers from the Midwestern United States, where climatic conditions are favorable for apple growing, produced more pollen grains than those in Southern Brazil, especially in 'Fuji' flowers (183.392 and 50.749 pollen grains/flower, respectively). In Caçador, maximum stigmatic receptivity in apple was observed at anthesis. Differently, stigmas of apple flowers from Wooster reached optimum receptivity 24-48 h after flower opening. As a conclusion, climatic conditions appeared to be important factors in determining apple flower quality, and consequently, the potential for fertilization and fruit set.
653 $aflower morphology
653 $aMalus domestica Borkh
653 $aovary
653 $apistil
653 $apollen germination
653 $astigmatic receptivity
700 1 $aSILVA, A. L.
700 1 $aPETRI, J. L.
700 1 $aCOUTO, M.
700 1 $aLEITE, G. B.
700 1 $aRACSKO, J.
773 $tActa Horticulturae , Leuven$gn. 1130, p. 95-102, 2016.
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Epagri-Sede (Epagri-Sede) |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
08/09/2005 |
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Data da última atualização: |
16/02/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Circulação/Nível: |
-- - -- |
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Autoria: |
HINZ, R. H.; LICHTEMBERG, L. A.; SCHMITT, A. T.; MALBURG, J. L. |
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Afiliação: |
Epagri |
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Título: |
Efeito da utilização de sacos de polietileno e da pulverização na proteção de cachos de banana ?Nanicão? contra o ataque de pragas. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 15., 1998, Poços de Caldas, MG. Frutas: este mercado vale ouro. Lavras, MG: UFLA/SBF, 1998. p. 135. |
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Idioma: |
Português |
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Conteúdo: |
Foi realizado um experimento no município de Corupá, em 1998, com o objetivo de avaliar o efeito da pulverização e da utilização de cachos de banana 'Nanicão' no controle de pragas do cacho. O uso de sacos plásticos, tratados ou não com clorpirifós, foram eficientes no controle do tripes-da-ferrugem e do ácaro-da-ferrugem. No entanto, apenas o saco tratado, colocado antes da abertura da inflorescência, foi eficiente, no controle do tripes-da-erpção. As pulverizações com enxofre e carbaryl foram eficientes no controle do tripes-da-ferrugem. |
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Palavras-Chave: |
Acaro; Banana nanicao; Carbaryl; Clorpirifó; Controle; Controle de praga; Ensacamento do cacho; Enxofre; Musa sp; Praga de planta; Tripes. |
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Categoria do assunto: |
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Marc: |
LEADER 01363naa a2200253 a 4500
001 1083643
005 2012-02-16
008 1998 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aEfeito da utilização de sacos de polietileno e da pulverização na proteção de cachos de banana ?Nanicão? contra o ataque de pragas.
260 $c1998
520 $aFoi realizado um experimento no município de Corupá, em 1998, com o objetivo de avaliar o efeito da pulverização e da utilização de cachos de banana 'Nanicão' no controle de pragas do cacho. O uso de sacos plásticos, tratados ou não com clorpirifós, foram eficientes no controle do tripes-da-ferrugem e do ácaro-da-ferrugem. No entanto, apenas o saco tratado, colocado antes da abertura da inflorescência, foi eficiente, no controle do tripes-da-erpção. As pulverizações com enxofre e carbaryl foram eficientes no controle do tripes-da-ferrugem.
653 $aAcaro
653 $aBanana nanicao
653 $aCarbaryl
653 $aClorpirifó
653 $aControle
653 $aControle de praga
653 $aEnsacamento do cacho
653 $aEnxofre
653 $aMusa sp
653 $aPraga de planta
653 $aTripes
773 $tIn: CONGRESSO BRASILEIRO DE FRUTICULTURA, 15., 1998, Poços de Caldas, MG. Frutas: este mercado vale ouro. Lavras, MG: UFLA/SBF, 1998. p. 135.
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