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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
07/06/2000 |
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Data da última atualização: |
07/06/2000 |
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Autoria: |
HOFSTRA, G.; KRIEG, L. C.; FLETCHER, R. A. |
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Afiliação: |
Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada. |
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Título: |
Uniconazole reduces ethylene and 1-Aminocyclopropane-1-Carboxylic acid and increases spermine levels in mung bean seedlings. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Journal Plant Growth Regul, v.8, p.45-51, 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
Uniconazole reduced growth of etiolated mung bean seedlings and increased lateral root formation. Ethylene production for whole seedlings was reduced by 80% within 24 h after treatment and 1-aminocyclopropane-1-carboxylic acid concentration were reduced by approximately 40% in 12 h. Uniconazole treatment increased spermine levels by 100% by day 4, whereas spermidine and putrescine and putrescine levels were not affected. Uniconazole, by inhibiting ethylene synthesis, may be increasing spermine levels, which in turn stitmulate formation of root primordia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01014naa a2200145 a 4500
001 1648955
005 2000-06-07
008 1989 bl --- 0-- u #d
100 1 $aHOFSTRA, G.
245 $aUniconazole reduces ethylene and 1-Aminocyclopropane-1-Carboxylic acid and increases spermine levels in mung bean seedlings.
260 $c1989
520 $aUniconazole reduced growth of etiolated mung bean seedlings and increased lateral root formation. Ethylene production for whole seedlings was reduced by 80% within 24 h after treatment and 1-aminocyclopropane-1-carboxylic acid concentration were reduced by approximately 40% in 12 h. Uniconazole treatment increased spermine levels by 100% by day 4, whereas spermidine and putrescine and putrescine levels were not affected. Uniconazole, by inhibiting ethylene synthesis, may be increasing spermine levels, which in turn stitmulate formation of root primordia.
700 1 $aKRIEG, L. C.
700 1 $aFLETCHER, R. A.
773 $tJournal Plant Growth Regul$gv.8, p.45-51, 1989.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
01/07/2010 |
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Data da última atualização: |
28/09/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
RAKOCEVIC, M.; MARTIM, S. F. |
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Afiliação: |
MIROSLAVA RAKOCEVIC, IAPAR; SIMONI FERNANDA MARTIM, Estagiária CNPTIA. |
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Título: |
Time series in analysis of yerba-mate biennial growth modified by environment. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
International Journal of Biometeorology, Berlin, p. 1-11, 2010. |
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DOI: |
DOI 10.1007/s00484-010-0322-4 |
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Idioma: |
Inglês |
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Conteúdo: |
To assess differences in the lag-effect pattern in the relationship between yerba-mate biennial growth and environmental factors, a time-series analysis was performed. A generalized Poisson regression model was used to control time trends, temperature, growing degree days (GDD), rainfalls and night length (NL). It was hypothesized that the active growth and growth pauses in yerba-mate are controlled endogenously and modified by environment, and that genders would respond differently to environmental modifications. The patterns in the lag effect from the distributed-lag models were similar to those of time-series models with meteorological data means with lag=0. GDD and NL were principal factors affecting biennial yerba-mate shoot elongation and the number of green leaves of females grown in monoculture, besides their significant effects on metamer emission and leaf area in males grown in monoculture. NL also had a significant influence on shoot elongation and leaf area of both genders grown in forest understorey (FUS), indicating that yerba-mate growth is synchronized by an internal clock sensitive to temperature adjustments. The morphological plasticity and the adaptation efforts of yerba-mate were more pronounced in monoculture than in FUS. Sexual dimorphism was expressed?males were more sensitive to environmental changes than females, especially in monoculture. Growth modifications were much more intense when plants were grown in a cultivation system that is less like yerba-mate natural habitat (monoculture) than in one resembling its natural habitat (FUS). Our data support the ecological specialization theory. MenosTo assess differences in the lag-effect pattern in the relationship between yerba-mate biennial growth and environmental factors, a time-series analysis was performed. A generalized Poisson regression model was used to control time trends, temperature, growing degree days (GDD), rainfalls and night length (NL). It was hypothesized that the active growth and growth pauses in yerba-mate are controlled endogenously and modified by environment, and that genders would respond differently to environmental modifications. The patterns in the lag effect from the distributed-lag models were similar to those of time-series models with meteorological data means with lag=0. GDD and NL were principal factors affecting biennial yerba-mate shoot elongation and the number of green leaves of females grown in monoculture, besides their significant effects on metamer emission and leaf area in males grown in monoculture. NL also had a significant influence on shoot elongation and leaf area of both genders grown in forest understorey (FUS), indicating that yerba-mate growth is synchronized by an internal clock sensitive to temperature adjustments. The morphological plasticity and the adaptation efforts of yerba-mate were more pronounced in monoculture than in FUS. Sexual dimorphism was expressed?males were more sensitive to environmental changes than females, especially in monoculture. Growth modifications were much more intense when plants were grown in a cultivation system that is less like yer... Mostrar Tudo |
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Palavras-Chave: |
Dados meteorológicos; Dimorfismo sexual; Erva mate; Growing degree days. |
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Thesagro: |
Ilex Paraguariensis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02280naa a2200205 a 4500
001 1856503
005 2016-09-28
008 2010 bl uuuu u00u1 u #d
024 7 $aDOI 10.1007/s00484-010-0322-4$2DOI
100 1 $aRAKOCEVIC, M.
245 $aTime series in analysis of yerba-mate biennial growth modified by environment.$h[electronic resource]
260 $c2010
520 $aTo assess differences in the lag-effect pattern in the relationship between yerba-mate biennial growth and environmental factors, a time-series analysis was performed. A generalized Poisson regression model was used to control time trends, temperature, growing degree days (GDD), rainfalls and night length (NL). It was hypothesized that the active growth and growth pauses in yerba-mate are controlled endogenously and modified by environment, and that genders would respond differently to environmental modifications. The patterns in the lag effect from the distributed-lag models were similar to those of time-series models with meteorological data means with lag=0. GDD and NL were principal factors affecting biennial yerba-mate shoot elongation and the number of green leaves of females grown in monoculture, besides their significant effects on metamer emission and leaf area in males grown in monoculture. NL also had a significant influence on shoot elongation and leaf area of both genders grown in forest understorey (FUS), indicating that yerba-mate growth is synchronized by an internal clock sensitive to temperature adjustments. The morphological plasticity and the adaptation efforts of yerba-mate were more pronounced in monoculture than in FUS. Sexual dimorphism was expressed?males were more sensitive to environmental changes than females, especially in monoculture. Growth modifications were much more intense when plants were grown in a cultivation system that is less like yerba-mate natural habitat (monoculture) than in one resembling its natural habitat (FUS). Our data support the ecological specialization theory.
650 $aIlex Paraguariensis
653 $aDados meteorológicos
653 $aDimorfismo sexual
653 $aErva mate
653 $aGrowing degree days
700 1 $aMARTIM, S. F.
773 $tInternational Journal of Biometeorology, Berlin, p. 1-11, 2010.
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