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Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
15/08/2005 |
Data da última atualização: |
15/08/2005 |
Autoria: |
COELHO, A. M.; VIANNA, R. T. |
Título: |
Producao de sementes de milho. |
Ano de publicação: |
1980 |
Fonte/Imprenta: |
Informe Agropecuario, Belo Horizonte, v. 6, n. 72, p. 70-75, dez. 1980. |
Idioma: |
Português |
Palavras-Chave: |
Milho; Producao de semente. |
Categoria do assunto: |
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Marc: |
LEADER 00396naa a2200145 a 4500 001 1038542 005 2005-08-15 008 1980 bl uuuu u00u1 u #d 100 1 $aCOELHO, A. M. 245 $aProducao de sementes de milho. 260 $c1980 653 $aMilho 653 $aProducao de semente 700 1 $aVIANNA, R. T. 773 $tInforme Agropecuario, Belo Horizonte$gv. 6, n. 72, p. 70-75, dez. 1980.
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Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
30/11/2011 |
Data da última atualização: |
30/11/2011 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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-- - -- |
Autoria: |
LEITE, G. B.; BONHOMME, M.; PUTTI, G. L.; PETEL, G.; RAGEAU, R. |
Afiliação: |
Epagri |
Título: |
Influence of chilling amounts on budbreak patterns on the one-year-old shoot of peach tree and dynamics of physiological and biochemical parameters related to dormancy course. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON PLANT DORMANCY, 3., 2004, Wageningen. Abstracts... Wageningen: Wageningen University, 2004. p. 47. |
Idioma: |
Português |
Conteúdo: |
Under the soft winter conditions of tropical and subtropical zones, varieties of temperate fruit trees, if not well adapted, suffer agronomic problems resulting from heterogeneous budbreak and flowering (in temperate zones they could experience such problems with increasing intensity in future owing to global warming). Using experimental conditions providing trees with regular (R) or limited (L) chilling amounts before they experienced forcing temperatures (respectively trees at the orchard or trees in containers moved at the beginning of December from outside into a heated greenhouse), the influence of these amounts on the budbreak pattern of ?Redhaven? peach trees was investigated, with special regards to the foregoing dynamics of development of the buds and related physiological and biochemical parameters according to their place along the twig. Individual vegetative and floral budbreak was recorded in planta. Leaf bud endodormancy was characterized using the ?cuttings? test. Growth rhythm of floral buds before budbreak was estimated from the dry weight of floral primordia. The water content of the vegetative and floral buds was computed. The energy metabolism of the primordia zones was characterized through respiration rate measurement (microcalorimetry method) and ATP (and ADP) assays (bioluminescence method). Starch, sucrose, sorbitol, fructose and glucose were assayed for characterizing carbohydrate state in the buds. Under the L and R treatments budbreak rate and patterns were different: global final rate respectively low and high, distribution along the twig respectively basitonic and even. Data confirmed that ATP contents could be an interesting marker of the growth capacity of the buds in planta and indicated that respiration rate could be as well such a marker. The data of the various parameters indicated that under the different treatments the budbreak patterns depended on the release patterns of bud endodormancy, in time as well as in space. Depending the chilling amounts applied, the budbreak patterns could depend either on the dynamics of endodormancy release or on processes taking places after endodormancy release. MenosUnder the soft winter conditions of tropical and subtropical zones, varieties of temperate fruit trees, if not well adapted, suffer agronomic problems resulting from heterogeneous budbreak and flowering (in temperate zones they could experience such problems with increasing intensity in future owing to global warming). Using experimental conditions providing trees with regular (R) or limited (L) chilling amounts before they experienced forcing temperatures (respectively trees at the orchard or trees in containers moved at the beginning of December from outside into a heated greenhouse), the influence of these amounts on the budbreak pattern of ?Redhaven? peach trees was investigated, with special regards to the foregoing dynamics of development of the buds and related physiological and biochemical parameters according to their place along the twig. Individual vegetative and floral budbreak was recorded in planta. Leaf bud endodormancy was characterized using the ?cuttings? test. Growth rhythm of floral buds before budbreak was estimated from the dry weight of floral primordia. The water content of the vegetative and floral buds was computed. The energy metabolism of the primordia zones was characterized through respiration rate measurement (microcalorimetry method) and ATP (and ADP) assays (bioluminescence method). Starch, sucrose, sorbitol, fructose and glucose were assayed for characterizing carbohydrate state in the buds. Under the L and R treatments budbreak rate and pat... Mostrar Tudo |
Palavras-Chave: |
Brotação; Dormência; Quantidade de frio hibernal. |
Categoria do assunto: |
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Marc: |
LEADER 02788naa a2200157 a 4500 001 1082281 005 2011-11-30 008 2004 bl uuuu u00u1 u #d 100 1 $aEpagri 245 $aInfluence of chilling amounts on budbreak patterns on the one-year-old shoot of peach tree and dynamics of physiological and biochemical parameters related to dormancy course. 260 $c2004 520 $aUnder the soft winter conditions of tropical and subtropical zones, varieties of temperate fruit trees, if not well adapted, suffer agronomic problems resulting from heterogeneous budbreak and flowering (in temperate zones they could experience such problems with increasing intensity in future owing to global warming). Using experimental conditions providing trees with regular (R) or limited (L) chilling amounts before they experienced forcing temperatures (respectively trees at the orchard or trees in containers moved at the beginning of December from outside into a heated greenhouse), the influence of these amounts on the budbreak pattern of ?Redhaven? peach trees was investigated, with special regards to the foregoing dynamics of development of the buds and related physiological and biochemical parameters according to their place along the twig. Individual vegetative and floral budbreak was recorded in planta. Leaf bud endodormancy was characterized using the ?cuttings? test. Growth rhythm of floral buds before budbreak was estimated from the dry weight of floral primordia. The water content of the vegetative and floral buds was computed. The energy metabolism of the primordia zones was characterized through respiration rate measurement (microcalorimetry method) and ATP (and ADP) assays (bioluminescence method). Starch, sucrose, sorbitol, fructose and glucose were assayed for characterizing carbohydrate state in the buds. Under the L and R treatments budbreak rate and patterns were different: global final rate respectively low and high, distribution along the twig respectively basitonic and even. Data confirmed that ATP contents could be an interesting marker of the growth capacity of the buds in planta and indicated that respiration rate could be as well such a marker. The data of the various parameters indicated that under the different treatments the budbreak patterns depended on the release patterns of bud endodormancy, in time as well as in space. Depending the chilling amounts applied, the budbreak patterns could depend either on the dynamics of endodormancy release or on processes taking places after endodormancy release. 653 $aBrotação 653 $aDormência 653 $aQuantidade de frio hibernal 773 $tIn: INTERNATIONAL SYMPOSIUM ON PLANT DORMANCY, 3., 2004, Wageningen. Abstracts... Wageningen: Wageningen University, 2004. p. 47.
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