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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
13/02/1997 |
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Data da última atualização: |
17/01/2023 |
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Autoria: |
SALES, M. F. de; SAMPAIO, E. V. de S. B. |
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Título: |
Aspectos morfológicos e fisiológicos do crescimento de oito gramíneas de Pernambuco. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
In: REUNIÃO NORDESTINA DE BOTÂNICA, 8., 1984, Recife, PE. Resumos... Recife: UFRPE- Departamento de Biologia, 1984. p. 51. |
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Idioma: |
Português |
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Conteúdo: |
Foi feita uma avaliação da capacidade forrageira de seis gramíneas nativas ou naturalizadas nas zonas da mata (Paspalum maritimum Trin.- capim gengibre e P. conjugatum Bergius- capim papua) e semi-arida (Rhynchelytrum repens (Willd) Hubb. - capim rosado, Pappophorum pappiferum (Lam.) O.K. - capim papoforo, chloris orghonoton Doell - capim de raiz e Aristida adscensionis L. - capim panasco) do Estado de Pernambuco, comparando-se ao crescimento dos capins da Zona da Mata e semi-árida com os capins cultivados Brachiaria decumbens Stapf. (capim braquiaria) e Cenchrus ciliaris L. (capim buffel) respectivamente. Para esta avaliação, tomou-se por base 32 parametros analisados sobre o crescimento foliar do colmo principal e perfilhos; posição gemas que desenvolveram-se em perfilhos; morfologia, desenvolvimento e número de perfilhos formados; produção de matéria seca e rebrota. O experimento foi conduzido em casa de vegetação num periodo de 200 dias e o crescimento acompanhado em 15 plantas fazendo-se observações semanais desde o estádio de plantula ate florescimento e em outras 15 plantas, a produção foi obtida, efetuando-se 3 cortes consecutivos a intervalos de 40 dias. Com base nos parâmetros analisados, sugeriu-se que os capins rosado, de raiz e papoforo para a região semi-árida e gengibre e papua para a zona da mata poderiam ser aproveitados como forrageiras. |
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Palavras-Chave: |
Brasil; Morfologia; Pernambuco; Recursos naturais. |
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Thesagro: |
Botânica; Crescimento; Fisiologia; Gramínea. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02094naa a2200229 a 4500
001 1128940
005 2023-01-17
008 1984 bl uuuu u00u1 u #d
100 1 $aSALES, M. F. de
245 $aAspectos morfológicos e fisiológicos do crescimento de oito gramíneas de Pernambuco.
260 $c1984
520 $aFoi feita uma avaliação da capacidade forrageira de seis gramíneas nativas ou naturalizadas nas zonas da mata (Paspalum maritimum Trin.- capim gengibre e P. conjugatum Bergius- capim papua) e semi-arida (Rhynchelytrum repens (Willd) Hubb. - capim rosado, Pappophorum pappiferum (Lam.) O.K. - capim papoforo, chloris orghonoton Doell - capim de raiz e Aristida adscensionis L. - capim panasco) do Estado de Pernambuco, comparando-se ao crescimento dos capins da Zona da Mata e semi-árida com os capins cultivados Brachiaria decumbens Stapf. (capim braquiaria) e Cenchrus ciliaris L. (capim buffel) respectivamente. Para esta avaliação, tomou-se por base 32 parametros analisados sobre o crescimento foliar do colmo principal e perfilhos; posição gemas que desenvolveram-se em perfilhos; morfologia, desenvolvimento e número de perfilhos formados; produção de matéria seca e rebrota. O experimento foi conduzido em casa de vegetação num periodo de 200 dias e o crescimento acompanhado em 15 plantas fazendo-se observações semanais desde o estádio de plantula ate florescimento e em outras 15 plantas, a produção foi obtida, efetuando-se 3 cortes consecutivos a intervalos de 40 dias. Com base nos parâmetros analisados, sugeriu-se que os capins rosado, de raiz e papoforo para a região semi-árida e gengibre e papua para a zona da mata poderiam ser aproveitados como forrageiras.
650 $aBotânica
650 $aCrescimento
650 $aFisiologia
650 $aGramínea
653 $aBrasil
653 $aMorfologia
653 $aPernambuco
653 $aRecursos naturais
700 1 $aSAMPAIO, E. V. de S. B.
773 $tIn: REUNIÃO NORDESTINA DE BOTÂNICA, 8., 1984, Recife, PE. Resumos... Recife: UFRPE- Departamento de Biologia, 1984. p. 51.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
22/12/2022 |
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Data da última atualização: |
26/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
HOHENFELD, C. S.; PASSOS, A. R.; CARVALHO, H. W. L. de; OLIVEIRA, S. A. S. de; OLIVEIRA, E. J. de. |
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Afiliação: |
CAMILA SANTIAGO HOHENFELD; ADRIANA RODRIGUES PASSOS; HELIO WILSON LEMOS DE CARVALHO, CPATC; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Genome-wide association study and selection for field resistance to cassava root rot disease and productive traits. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
PLos One, v. 17, n. 6, e0270020, June, 2022. |
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DOI: |
| https://doi.org/10.1371/journal.pone.0270020 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava root rot disease is caused by a complex of soil-borne pathogens and has high economic impacts because it directly affects the tuberous roots, which are the main commercial product. This study aimed to evaluate cassava genotypes for resistance to root rot disease in a field with a previous history of high disease incidence. It also aimed to identify possible genomic regions associated with field resistance based on genome-wide association studies. A total of 148 genotypes from Embrapa Mandioca and Fruticultura were evaluated over two years, including improved materials and curated germplasms. Analysis of phenotypic data was conducted, as well as a genomic association analysis, based on the general linear model, mixed linear model, and fixed and random model circulating probability unification. The observed high disease index (ω) was directly correlated with genotype survival, affecting plant height, shoot yield, and fresh root yield. The genotypes were grouped into five clusters, which were classified according to level of root rot resistance (i.e., extremely susceptible, susceptible, moderately susceptible, moderately resistant, and resistant). The 10 genotypes with the best performance in the field were selected as potential progenitors for the development of segregating progenies. Estimates of genomic kinship between these genotypes ranged from -0.183 to 0.671. The genotypes BGM-1171 and BGM-1190 showed the lowest degree of kinship with the other selected sources of resistance. The genotypes BGM-0209, BGM-0398, and BGM-0659 showed negative kinship values with most elite varieties, while BGM-0659 presented negative kinship with all landraces. A genome-wide association analysis detected five significant single nucleotide polymorphisms related to defense mechanisms against biotic and abiotic stresses, with putative association with fresh root yield in soil infested with root rot pathogens. These findings can be utilized to develop molecular selection for root rot resistance in cassava. MenosCassava root rot disease is caused by a complex of soil-borne pathogens and has high economic impacts because it directly affects the tuberous roots, which are the main commercial product. This study aimed to evaluate cassava genotypes for resistance to root rot disease in a field with a previous history of high disease incidence. It also aimed to identify possible genomic regions associated with field resistance based on genome-wide association studies. A total of 148 genotypes from Embrapa Mandioca and Fruticultura were evaluated over two years, including improved materials and curated germplasms. Analysis of phenotypic data was conducted, as well as a genomic association analysis, based on the general linear model, mixed linear model, and fixed and random model circulating probability unification. The observed high disease index (ω) was directly correlated with genotype survival, affecting plant height, shoot yield, and fresh root yield. The genotypes were grouped into five clusters, which were classified according to level of root rot resistance (i.e., extremely susceptible, susceptible, moderately susceptible, moderately resistant, and resistant). The 10 genotypes with the best performance in the field were selected as potential progenitors for the development of segregating progenies. Estimates of genomic kinship between these genotypes ranged from -0.183 to 0.671. The genotypes BGM-1171 and BGM-1190 showed the lowest degree of kinship with the other selected sour... Mostrar Tudo |
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Thesagro: |
Doença de Planta; Mandioca; Patógeno; Podridão Radicular; Raiz. |
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Thesaurus NAL: |
Cassava; Pathogens; Plant pathogens; Root diseases. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150273/1/Genome-wide-association-study-and-selection....pdf
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Marc: |
LEADER 02904naa a2200289 a 4500
001 2150273
005 2022-12-26
008 2022 bl uuuu u00u1 u #d
024 7 $a| https://doi.org/10.1371/journal.pone.0270020$2DOI
100 1 $aHOHENFELD, C. S.
245 $aGenome-wide association study and selection for field resistance to cassava root rot disease and productive traits.$h[electronic resource]
260 $c2022
520 $aCassava root rot disease is caused by a complex of soil-borne pathogens and has high economic impacts because it directly affects the tuberous roots, which are the main commercial product. This study aimed to evaluate cassava genotypes for resistance to root rot disease in a field with a previous history of high disease incidence. It also aimed to identify possible genomic regions associated with field resistance based on genome-wide association studies. A total of 148 genotypes from Embrapa Mandioca and Fruticultura were evaluated over two years, including improved materials and curated germplasms. Analysis of phenotypic data was conducted, as well as a genomic association analysis, based on the general linear model, mixed linear model, and fixed and random model circulating probability unification. The observed high disease index (ω) was directly correlated with genotype survival, affecting plant height, shoot yield, and fresh root yield. The genotypes were grouped into five clusters, which were classified according to level of root rot resistance (i.e., extremely susceptible, susceptible, moderately susceptible, moderately resistant, and resistant). The 10 genotypes with the best performance in the field were selected as potential progenitors for the development of segregating progenies. Estimates of genomic kinship between these genotypes ranged from -0.183 to 0.671. The genotypes BGM-1171 and BGM-1190 showed the lowest degree of kinship with the other selected sources of resistance. The genotypes BGM-0209, BGM-0398, and BGM-0659 showed negative kinship values with most elite varieties, while BGM-0659 presented negative kinship with all landraces. A genome-wide association analysis detected five significant single nucleotide polymorphisms related to defense mechanisms against biotic and abiotic stresses, with putative association with fresh root yield in soil infested with root rot pathogens. These findings can be utilized to develop molecular selection for root rot resistance in cassava.
650 $aCassava
650 $aPathogens
650 $aPlant pathogens
650 $aRoot diseases
650 $aDoença de Planta
650 $aMandioca
650 $aPatógeno
650 $aPodridão Radicular
650 $aRaiz
700 1 $aPASSOS, A. R.
700 1 $aCARVALHO, H. W. L. de
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aOLIVEIRA, E. J. de
773 $tPLos One$gv. 17, n. 6, e0270020, June, 2022.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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