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 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Café; Embrapa Unidades Centrais. |
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Data corrente: |
18/02/2011 |
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Data da última atualização: |
08/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ROSA, S. D. V. F. da; McDONALD, M. B.; VEIGA, A. D.; VILELA, F. de L.; FERREIRA, I. A. |
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Afiliação: |
STTELA DELLYZETE VEIGA F DA ROSA, SAPC; Ohio State University; Embrapa Café; Ohio State University; Ohio State University. |
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Título: |
Staging coffee seedling growth: a rationale for shortening the coffee seed germination test. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Seed Science and Technology, v. 38, n. 2, p.421-431. 2010. |
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Idioma: |
Português |
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Conteúdo: |
The species Coffea arabica L. is one of the most important agricultural commodities in Brazil. Despite considerable effort at vegetative propagation of coffee plants, they still are propagated by seedlings produced directly from seeds. An undesired trait of coffee seeds is that they have slow and asynchronous germination, which makes it difficult to obtain seedlings of desirable quality. In addition, this slow and asynchronous germination makes rapid viability and/or vigor evaluations difficult because of the excessive time required to obtain results. The objective of this study was to describe coffee seedling growth developmental stages by documenting morphological changes during germination and post-germination growth. Eight seedling growth stages were described. Description of stages permits a more accurate characterization of coffee seedling development than days after imbibition since environmental factors have a major bearing on the speed and uniformity of seedling growth. In addition, current Rules for Seed Testing in Brazil require 30 days before germination can be assessed. These data demonstrate all essential seedling parts are present on coffee seedlings at stage 6, which occurs at 15 days. Such data suggest that the standard germination test for coffee seeds can be substantially shortened to provide more rapid seed quality assessment. |
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Palavras-Chave: |
Agricultural commodities in Brazil; Coffea arabica L. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01982naa a2200193 a 4500
001 1880484
005 2024-01-08
008 2010 bl uuuu u00u1 u #d
100 1 $aROSA, S. D. V. F. da
245 $aStaging coffee seedling growth$ba rationale for shortening the coffee seed germination test.$h[electronic resource]
260 $c2010
520 $aThe species Coffea arabica L. is one of the most important agricultural commodities in Brazil. Despite considerable effort at vegetative propagation of coffee plants, they still are propagated by seedlings produced directly from seeds. An undesired trait of coffee seeds is that they have slow and asynchronous germination, which makes it difficult to obtain seedlings of desirable quality. In addition, this slow and asynchronous germination makes rapid viability and/or vigor evaluations difficult because of the excessive time required to obtain results. The objective of this study was to describe coffee seedling growth developmental stages by documenting morphological changes during germination and post-germination growth. Eight seedling growth stages were described. Description of stages permits a more accurate characterization of coffee seedling development than days after imbibition since environmental factors have a major bearing on the speed and uniformity of seedling growth. In addition, current Rules for Seed Testing in Brazil require 30 days before germination can be assessed. These data demonstrate all essential seedling parts are present on coffee seedlings at stage 6, which occurs at 15 days. Such data suggest that the standard germination test for coffee seeds can be substantially shortened to provide more rapid seed quality assessment.
653 $aAgricultural commodities in Brazil
653 $aCoffea arabica L
700 1 $aMcDONALD, M. B.
700 1 $aVEIGA, A. D.
700 1 $aVILELA, F. de L.
700 1 $aFERREIRA, I. A.
773 $tSeed Science and Technology$gv. 38, n. 2, p.421-431. 2010.
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Embrapa Café (CNPCa) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
01/12/2017 |
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Data da última atualização: |
01/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
ALVARENGA, A. M. S. B. De; BOTOSSO, P. C.; SOFFIATTI, P. |
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Afiliação: |
Allan Maurício Sanches Baptista De Alvarenga, Pós-graduando da UFPR; PAULO CESAR BOTOSSO, CNPF; Patrícia Soffiatti, UFPR. |
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Título: |
Stem growth and phenology of three subtropical mangrove tree species. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Brazilian Journal of Botany, v. 40, n. 4, p. 907-914, Dec. 2017. |
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DOI: |
doi.org/10.1007/s40415-017-0397-9 |
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Idioma: |
Inglês |
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Conteúdo: |
The present study aimed to investigate the relationships among stem circumference growth, phenology and abiotic variables, of three mangrove tree species of southern Brazil. Species circumference growth, measured using dendrometer bands, and phenological events were followed for 12 months. Data were correlated with day length, temperature and precipitation using a model based on the method of least squares, taking into account temporal autocorrelation of the data. During the study period, temperature influenced the fruiting of Avicennia schaueriana Stapf and Leechm. ex Moldenke, while it was strongly related to the production of leaves and flowering in Laguncularia racemosa (L.) Gaertn and Rhizophora mangle L., respectively. Monthly precipitation was related to the flowering of only R. mangle. No abiotic variable (day length, temperature and rainfall) was correlated with stem growth for the L. racemosa and R. mangle during the period. However, the highest rate of increase in stem circumference for all three species occurred during the period of highest temperature and rainfall. Our results demonstrate that the reproductive phenophases are more intense in wetter and hotter conditions. Combined with endogenous factors, these abiotic variables influence vegetative and reproductive phenophases and stem circumference growth. Stem growth rates were different for each studied species, but they all exhibited high peaks of stem growth concomitant with periods of higher temperature and precipitation. Phenological events, and how they correlate with the analysed abiotic variables, differed among the three species and stem growth showed a direct relationship with phenophases during the study period only for A. schaueriana. MenosThe present study aimed to investigate the relationships among stem circumference growth, phenology and abiotic variables, of three mangrove tree species of southern Brazil. Species circumference growth, measured using dendrometer bands, and phenological events were followed for 12 months. Data were correlated with day length, temperature and precipitation using a model based on the method of least squares, taking into account temporal autocorrelation of the data. During the study period, temperature influenced the fruiting of Avicennia schaueriana Stapf and Leechm. ex Moldenke, while it was strongly related to the production of leaves and flowering in Laguncularia racemosa (L.) Gaertn and Rhizophora mangle L., respectively. Monthly precipitation was related to the flowering of only R. mangle. No abiotic variable (day length, temperature and rainfall) was correlated with stem growth for the L. racemosa and R. mangle during the period. However, the highest rate of increase in stem circumference for all three species occurred during the period of highest temperature and rainfall. Our results demonstrate that the reproductive phenophases are more intense in wetter and hotter conditions. Combined with endogenous factors, these abiotic variables influence vegetative and reproductive phenophases and stem circumference growth. Stem growth rates were different for each studied species, but they all exhibited high peaks of stem growth concomitant with periods of higher temperature an... Mostrar Tudo |
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Palavras-Chave: |
Vegetative events. |
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Thesagro: |
Dendrometria; Laguncularia Racemosa; Reprodução vegetal; Rhizophora Mangle. |
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Thesaurus NAL: |
Avicennia; Dendrometers; Reproductive performance. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02516naa a2200253 a 4500
001 2081196
005 2017-12-01
008 2017 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1007/s40415-017-0397-9$2DOI
100 1 $aALVARENGA, A. M. S. B. De
245 $aStem growth and phenology of three subtropical mangrove tree species.$h[electronic resource]
260 $c2017
520 $aThe present study aimed to investigate the relationships among stem circumference growth, phenology and abiotic variables, of three mangrove tree species of southern Brazil. Species circumference growth, measured using dendrometer bands, and phenological events were followed for 12 months. Data were correlated with day length, temperature and precipitation using a model based on the method of least squares, taking into account temporal autocorrelation of the data. During the study period, temperature influenced the fruiting of Avicennia schaueriana Stapf and Leechm. ex Moldenke, while it was strongly related to the production of leaves and flowering in Laguncularia racemosa (L.) Gaertn and Rhizophora mangle L., respectively. Monthly precipitation was related to the flowering of only R. mangle. No abiotic variable (day length, temperature and rainfall) was correlated with stem growth for the L. racemosa and R. mangle during the period. However, the highest rate of increase in stem circumference for all three species occurred during the period of highest temperature and rainfall. Our results demonstrate that the reproductive phenophases are more intense in wetter and hotter conditions. Combined with endogenous factors, these abiotic variables influence vegetative and reproductive phenophases and stem circumference growth. Stem growth rates were different for each studied species, but they all exhibited high peaks of stem growth concomitant with periods of higher temperature and precipitation. Phenological events, and how they correlate with the analysed abiotic variables, differed among the three species and stem growth showed a direct relationship with phenophases during the study period only for A. schaueriana.
650 $aAvicennia
650 $aDendrometers
650 $aReproductive performance
650 $aDendrometria
650 $aLaguncularia Racemosa
650 $aReprodução vegetal
650 $aRhizophora Mangle
653 $aVegetative events
700 1 $aBOTOSSO, P. C.
700 1 $aSOFFIATTI, P.
773 $tBrazilian Journal of Botany$gv. 40, n. 4, p. 907-914, Dec. 2017.
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