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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
14/12/1995 |
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Data da última atualização: |
05/05/2014 |
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Autoria: |
FARIA, S. M. de. |
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Título: |
Occurrence, infection pathways and structure of root nodules from woody species of the leguminosae. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Dundee: University of Dundee, Maio, 1988. |
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Páginas: |
189p. |
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Série: |
Tese de Doutorado. |
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Idioma: |
Inglês |
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Notas: |
Tese de Doutorado. Orientada por: Janet I. Sprent |
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Conteúdo: |
This thesis consists of six chapters: I. A review of nodulation in the family Leguminosae. This updates the classic work of Allen & Allen (1981) and includes new nodulation records (296 species). The doubtful nodulation status of some species is discussed, and the taxonomic implications are considered. The distribution of nodulation within the Leguminosas was found to be consistent in some tribes, groups and genera: this together with nodule morphology and structure are of considerabletaxonomic value. II. A study of nodule structure, from woody legumes, with special emphasis on caesalpinioid species. This revealed many symbiotic features different from those assumed to be general in legumes,although very similar to those reported in Parasponia, (the only genusof non-legume known to fix nitrogen in symbiosis with rhizobia). In all caesalpinioid, some papillionioid, but no mimosoid species, the bacteria are kept inside infection threads during the whole nitrogen fixing period. III. Root infection and nodule development in a species which does not consistently produce root hairs, Mimosa scabrella. A broad survey of root hair production and location in legumes roots was conducted as a basic study, choosing Mimosa scabrella for this study. Bacterial penetration into roots was found to occur via intercellular movement, prior to the intracellular infection; bacteria inside the cells were enclosed by structure which resemble infection threads; nodule initiation and development apparently does not differ greatly from that.. MenosThis thesis consists of six chapters: I. A review of nodulation in the family Leguminosae. This updates the classic work of Allen & Allen (1981) and includes new nodulation records (296 species). The doubtful nodulation status of some species is discussed, and the taxonomic implications are considered. The distribution of nodulation within the Leguminosas was found to be consistent in some tribes, groups and genera: this together with nodule morphology and structure are of considerabletaxonomic value. II. A study of nodule structure, from woody legumes, with special emphasis on caesalpinioid species. This revealed many symbiotic features different from those assumed to be general in legumes,although very similar to those reported in Parasponia, (the only genusof non-legume known to fix nitrogen in symbiosis with rhizobia). In all caesalpinioid, some papillionioid, but no mimosoid species, the bacteria are kept inside infection threads during the whole nitrogen fixing period. III. Root infection and nodule development in a species which does not consistently produce root hairs, Mimosa scabrella. A broad survey of root hair production and location in legumes roots was conducted as a basic study, choosing Mimosa scabrella for this study. Bacterial penetration into roots was found to occur via intercellular movement, prior to the intracellular infection; bacteria inside the cells were enclosed by structure which resemble infection threads; nodule initiation and development appar... Mostrar Tudo |
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Palavras-Chave: |
Plants; Root nodulation. |
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Thesagro: |
Infecção; Leguminosa; Nódulo; Planta; Raiz. |
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Thesaurus Nal: |
infection; legumes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02234nam a2200253 a 4500
001 1622124
005 2014-05-05
008 1988 bl uuuu m 00u1 u #d
100 1 $aFARIA, S. M. de
245 $aOccurrence, infection pathways and structure of root nodules from woody species of the leguminosae.
260 $aDundee: University of Dundee, Maio$c1988
300 $a189p.
490 $aTese de Doutorado.
500 $aTese de Doutorado. Orientada por: Janet I. Sprent
520 $aThis thesis consists of six chapters: I. A review of nodulation in the family Leguminosae. This updates the classic work of Allen & Allen (1981) and includes new nodulation records (296 species). The doubtful nodulation status of some species is discussed, and the taxonomic implications are considered. The distribution of nodulation within the Leguminosas was found to be consistent in some tribes, groups and genera: this together with nodule morphology and structure are of considerabletaxonomic value. II. A study of nodule structure, from woody legumes, with special emphasis on caesalpinioid species. This revealed many symbiotic features different from those assumed to be general in legumes,although very similar to those reported in Parasponia, (the only genusof non-legume known to fix nitrogen in symbiosis with rhizobia). In all caesalpinioid, some papillionioid, but no mimosoid species, the bacteria are kept inside infection threads during the whole nitrogen fixing period. III. Root infection and nodule development in a species which does not consistently produce root hairs, Mimosa scabrella. A broad survey of root hair production and location in legumes roots was conducted as a basic study, choosing Mimosa scabrella for this study. Bacterial penetration into roots was found to occur via intercellular movement, prior to the intracellular infection; bacteria inside the cells were enclosed by structure which resemble infection threads; nodule initiation and development apparently does not differ greatly from that..
650 $ainfection
650 $alegumes
650 $aInfecção
650 $aLeguminosa
650 $aNódulo
650 $aPlanta
650 $aRaiz
653 $aPlants
653 $aRoot nodulation
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
08/11/2022 |
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Data da última atualização: |
08/11/2022 |
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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: |
COSTA, T. C. e C. da; GUIMARAES, A. L. M. |
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Afiliação: |
THOMAZ CORREA E CASTRO DA COSTA, CNPMS; ANDRÉ LUIZ MIRANDA GUIMARÃES, Senac. |
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Título: |
Estimation of the Weibull distribution form parameter as a function of the scale parameter by the percentile method. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Floresta, v. 52, n. 4, p. 531-540, out./dez. 2022. |
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DOI: |
http://doi.org/10.5380/rf.v52i4.84893 |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT - Among the probability density functions that estimate and project diametric distributions, the Weibull function is one of the most studied, and the percentile method is an alternative approach for estimating its parameters, with different deduction methods for calculating the location, scale, and shape parameters; in addition, of these parameters, some require iteration between formulas. In this study, the percentile method was used, and a function was established between the shape parameter, the asymptotic percentiles, and the scale parameter. This function was tested with continuous forest inventory (CFI) data of a Khaya grandifoliola stand and Eucalyptus spp. in integrated forest-livestock-forest (IFLF) systems, and the function was also validated based on distributions designed by the application of a recovery methodology for determining forest growth and production (FG&P) parameters. The results showed an exact correlation when compared with the parameters calculated by the percentile method. This function using the percentile method, due to its practicality, may be an alternative for obtaining the shape parameter in FG&P methodologies. RESUMO - Estimativa do parâmetro forma da distribuição Weibull em função do parâmetro escala pelo método dos percentis. Dentre as funções densidade de probabilidade para estimar e projetar distribuições diamétricas, a função Weibull é uma das mais experimentadas, sendo o método dos percentis uma alternativa para estimar seus parâmetros, com diferentes deduções para cálculo dos parâmetros de locação, escala e forma, algumas exigindo iteração entre as fórmulas. Neste trabalho, utilizou-se o método dos percentis e estabeleceu-se uma função entre o parâmetro de forma, os percentis assintóticos e o parâmetro de escala. Esta função foi testada com dados de Inventário Florestal Contínuo (IFC) em um povoamento de Khaya grandifoliola, e em renques de Eucalyptus spp. em sistema ILPF e, também foi validada em distribuições projetadas pela aplicação de uma metodologia de recuperação dos parâmetros para projeção de crescimento e produção de florestas (C&PF). Os resultados mostraram uma correlação exata, quando comparada com os parâmetros calculados pelo método dos percentis. This function using the percentile method, due to its practicality, may be an alternative to obtain the shape parameter in C&PF methodologies. MenosABSTRACT - Among the probability density functions that estimate and project diametric distributions, the Weibull function is one of the most studied, and the percentile method is an alternative approach for estimating its parameters, with different deduction methods for calculating the location, scale, and shape parameters; in addition, of these parameters, some require iteration between formulas. In this study, the percentile method was used, and a function was established between the shape parameter, the asymptotic percentiles, and the scale parameter. This function was tested with continuous forest inventory (CFI) data of a Khaya grandifoliola stand and Eucalyptus spp. in integrated forest-livestock-forest (IFLF) systems, and the function was also validated based on distributions designed by the application of a recovery methodology for determining forest growth and production (FG&P) parameters. The results showed an exact correlation when compared with the parameters calculated by the percentile method. This function using the percentile method, due to its practicality, may be an alternative for obtaining the shape parameter in FG&P methodologies. RESUMO - Estimativa do parâmetro forma da distribuição Weibull em função do parâmetro escala pelo método dos percentis. Dentre as funções densidade de probabilidade para estimar e projetar distribuições diamétricas, a função Weibull é uma das mais experimentadas, sendo o método dos percentis uma alternativa para estimar seus p... Mostrar Tudo |
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Palavras-Chave: |
F(x); Fdp; Manejo florestal; Prognose. |
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Thesagro: |
Floresta. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1148114/1/Estimation-of-the-Weibull-distribution-form-parameter-as-a-function-of-the-scale-parameter-by-the-percentile-method.pdf
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Marc: |
LEADER 03083naa a2200205 a 4500
001 2148114
005 2022-11-08
008 2022 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.5380/rf.v52i4.84893$2DOI
100 1 $aCOSTA, T. C. e C. da
245 $aEstimation of the Weibull distribution form parameter as a function of the scale parameter by the percentile method.$h[electronic resource]
260 $c2022
520 $aABSTRACT - Among the probability density functions that estimate and project diametric distributions, the Weibull function is one of the most studied, and the percentile method is an alternative approach for estimating its parameters, with different deduction methods for calculating the location, scale, and shape parameters; in addition, of these parameters, some require iteration between formulas. In this study, the percentile method was used, and a function was established between the shape parameter, the asymptotic percentiles, and the scale parameter. This function was tested with continuous forest inventory (CFI) data of a Khaya grandifoliola stand and Eucalyptus spp. in integrated forest-livestock-forest (IFLF) systems, and the function was also validated based on distributions designed by the application of a recovery methodology for determining forest growth and production (FG&P) parameters. The results showed an exact correlation when compared with the parameters calculated by the percentile method. This function using the percentile method, due to its practicality, may be an alternative for obtaining the shape parameter in FG&P methodologies. RESUMO - Estimativa do parâmetro forma da distribuição Weibull em função do parâmetro escala pelo método dos percentis. Dentre as funções densidade de probabilidade para estimar e projetar distribuições diamétricas, a função Weibull é uma das mais experimentadas, sendo o método dos percentis uma alternativa para estimar seus parâmetros, com diferentes deduções para cálculo dos parâmetros de locação, escala e forma, algumas exigindo iteração entre as fórmulas. Neste trabalho, utilizou-se o método dos percentis e estabeleceu-se uma função entre o parâmetro de forma, os percentis assintóticos e o parâmetro de escala. Esta função foi testada com dados de Inventário Florestal Contínuo (IFC) em um povoamento de Khaya grandifoliola, e em renques de Eucalyptus spp. em sistema ILPF e, também foi validada em distribuições projetadas pela aplicação de uma metodologia de recuperação dos parâmetros para projeção de crescimento e produção de florestas (C&PF). Os resultados mostraram uma correlação exata, quando comparada com os parâmetros calculados pelo método dos percentis. This function using the percentile method, due to its practicality, may be an alternative to obtain the shape parameter in C&PF methodologies.
650 $aFloresta
653 $aF(x)
653 $aFdp
653 $aManejo florestal
653 $aPrognose
700 1 $aGUIMARAES, A. L. M.
773 $tFloresta$gv. 52, n. 4, p. 531-540, out./dez. 2022.
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Embrapa Milho e Sorgo (CNPMS) |
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