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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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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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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
11/08/1998 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALBUQUERQUE, S. G. de. |
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Afiliação: |
SEVERINO GONZAGA DE ALBUQUERQUE, CPATSA. |
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Título: |
Abundância de plantas novas de sete-cascas [Tabebuia spongiosa (Rizz)], numa caatinga do sertão de Pernambuco: relato de caso. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: REUNIÃO NORDESTINA DE BOTÂNICA, 21., Caxias. Programas e Resumos. Caxias: UEMA: CESC, 1997. |
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Páginas: |
p. 86. |
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Idioma: |
Português |
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Conteúdo: |
O sete-cascas (SC) é uma árvore endêmica das Caatinga, com uma densidade em 50 plantas/há, e área de copa de 12m2. Neste local, no período 1979-84, submeteu-se a Caatinga a 4 taxas de uso (1 boi/6,7 ha; 1 boi/1 0,0 ha; 1 boi/13,3 ha; e exclusão (sem uso)), para se verificar o efeito do pastejo sobre ela. Exceto a exclusão, os outros tratamentos tiveram duas repetições, totalizando 7 áreas com 400 ha. Anualmente em maio, determinava-se a densidade das plantas novas (DPN) (altura <0,5 mm) das espécies lenhosas, em parcelas de 1 m'. Em 1982 e 1984, determinou-se a densidade das árvores (DA) nas 7 áreas, com o Método dos Pontos Quadrantes. No período 1979-82, a DPN de SC variou pouco (X=0,169/m-), subindo muito porém em 1983 (X=16,3/m2). Detectou-se uma regressão (R2=0,86; P<0,05) entre a DNP/83 e a DA de SC/82 (X=54,2/ha), nas 7 áreas, com a equação DPN=- 14,6+0,57DA. Em 1984, a DPN baixou para 1,49/m2, havendo ainda regressão (R2=0,63;P<0,05) com a DN82, não havendo porém com a DN84 (P>0,05). Não se sabe a causa desta abundância de PN em 1983, embora estivesse relacionada com o banco de sementes proporcionado pelas árvores. Não houve alteração na DPN das espécies lenhosas. |
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Palavras-Chave: |
Pernambuco; Sertao; Sete-cascas; Tabebuia espongiosa. |
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Thesagro: |
Botânica; Caatinga; Pastejo; Planta; Planta Lenhosa. |
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Thesaurus NAL: |
Botanical composition; Plant communities; Plant ecology. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/195195/1/Ablbuquerque.ReuniaoNordestinaBotanica.pdf
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Marc: |
LEADER 02031nam a2200265 a 4500
001 1131387
005 2024-02-05
008 1997 bl uuuu u00u1 u #d
100 1 $aALBUQUERQUE, S. G. de
245 $aAbundância de plantas novas de sete-cascas [Tabebuia spongiosa (Rizz)], numa caatinga do sertão de Pernambuco$brelato de caso.
260 $aIn: REUNIÃO NORDESTINA DE BOTÂNICA, 21., Caxias. Programas e Resumos. Caxias: UEMA: CESC$c1997
300 $ap. 86.
520 $aO sete-cascas (SC) é uma árvore endêmica das Caatinga, com uma densidade em 50 plantas/há, e área de copa de 12m2. Neste local, no período 1979-84, submeteu-se a Caatinga a 4 taxas de uso (1 boi/6,7 ha; 1 boi/1 0,0 ha; 1 boi/13,3 ha; e exclusão (sem uso)), para se verificar o efeito do pastejo sobre ela. Exceto a exclusão, os outros tratamentos tiveram duas repetições, totalizando 7 áreas com 400 ha. Anualmente em maio, determinava-se a densidade das plantas novas (DPN) (altura <0,5 mm) das espécies lenhosas, em parcelas de 1 m'. Em 1982 e 1984, determinou-se a densidade das árvores (DA) nas 7 áreas, com o Método dos Pontos Quadrantes. No período 1979-82, a DPN de SC variou pouco (X=0,169/m-), subindo muito porém em 1983 (X=16,3/m2). Detectou-se uma regressão (R2=0,86; P<0,05) entre a DNP/83 e a DA de SC/82 (X=54,2/ha), nas 7 áreas, com a equação DPN=- 14,6+0,57DA. Em 1984, a DPN baixou para 1,49/m2, havendo ainda regressão (R2=0,63;P<0,05) com a DN82, não havendo porém com a DN84 (P>0,05). Não se sabe a causa desta abundância de PN em 1983, embora estivesse relacionada com o banco de sementes proporcionado pelas árvores. Não houve alteração na DPN das espécies lenhosas.
650 $aBotanical composition
650 $aPlant communities
650 $aPlant ecology
650 $aBotânica
650 $aCaatinga
650 $aPastejo
650 $aPlanta
650 $aPlanta Lenhosa
653 $aPernambuco
653 $aSertao
653 $aSete-cascas
653 $aTabebuia espongiosa
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Embrapa Semiárido (CPATSA) |
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