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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
30/10/2019 |
Data da última atualização: |
22/01/2020 |
Tipo da produção científica: |
Documentos |
Autoria: |
FIGUEIREDO, J. E. F.; VASCONCELOS, M. J. V. de; SILVA, A. F. da. |
Afiliação: |
JOSE EDSON FONTES FIGUEIREDO, CNPMS; MARIA JOSE VILACA DE VASCONCELOS, CNPMS; ALEXANDRE FERREIRA DA SILVA, CNPMS. |
Título: |
Variabilidade genética e fenotípica da Euphorbia heterophylla e sua provável origem. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 2019. |
Páginas: |
18 p. |
Série: |
(Embrapa Milho e Sorgo. Documentos, 237). |
Idioma: |
Português |
Conteúdo: |
Euphorbia heterophylla é um planta invasora de taxonomia controversa. Isso se deve principalmente à grande variabilidade observada nos níveis, inter e intrapopulacional, e intraindividual. Constata-se que os conceitos genéticos tradicionais são insuficientes para explicar toda a variação fenotípica observada nessa espécie, principalmente no nível individual. Nas duas últimas décadas, avanços notáveis foram obtidos sobre a natureza molecular dos diferentes mecanismos envolvidos no controle da expressão gênica, e culminaram com a descoberta de diferentes atores que participam da regulação epigenética da expressão gênica. Esse conjunto de informações tem possibilitado aos cientistas explicar a natureza da variação fenotípica intraindividual em animais e plantas. O objetivo desse documento é apresentar os diferentes tipos de controle epigenético da expressão gênica, apontando a direção para novos estudos que visem a esclarecer a origem da variabilidade fenotípica observada nessa importante espécie de planta invasora. |
Palavras-Chave: |
Alteração epigenética; Planta daninha; Planta invasora. |
Thesagro: |
Erva Daninha; Variação Genética. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203943/1/doc-237.pdf
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Marc: |
LEADER 01745nam a2200217 a 4500 001 2113667 005 2020-01-22 008 2019 bl uuuu u0uu1 u #d 100 1 $aFIGUEIREDO, J. E. F. 245 $aVariabilidade genética e fenotípica da Euphorbia heterophylla e sua provável origem.$h[electronic resource] 260 $aSete Lagoas: Embrapa Milho e Sorgo$c2019 300 $a18 p. 490 $a(Embrapa Milho e Sorgo. Documentos, 237). 520 $aEuphorbia heterophylla é um planta invasora de taxonomia controversa. Isso se deve principalmente à grande variabilidade observada nos níveis, inter e intrapopulacional, e intraindividual. Constata-se que os conceitos genéticos tradicionais são insuficientes para explicar toda a variação fenotípica observada nessa espécie, principalmente no nível individual. Nas duas últimas décadas, avanços notáveis foram obtidos sobre a natureza molecular dos diferentes mecanismos envolvidos no controle da expressão gênica, e culminaram com a descoberta de diferentes atores que participam da regulação epigenética da expressão gênica. Esse conjunto de informações tem possibilitado aos cientistas explicar a natureza da variação fenotípica intraindividual em animais e plantas. O objetivo desse documento é apresentar os diferentes tipos de controle epigenético da expressão gênica, apontando a direção para novos estudos que visem a esclarecer a origem da variabilidade fenotípica observada nessa importante espécie de planta invasora. 650 $aErva Daninha 650 $aVariação Genética 653 $aAlteração epigenética 653 $aPlanta daninha 653 $aPlanta invasora 700 1 $aVASCONCELOS, M. J. V. de 700 1 $aSILVA, A. F. da
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Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
04/02/2022 |
Data da última atualização: |
07/02/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
BISWAS, A.; ANDRADE, M. H. M. L.; ACHARYA, J. P.; SOUZA, C. L. de; LOPEZ, Y.; ASSIS, G. M. L. de; SHIRBHATE, S.; SINGH, A.; MUNOZ, P.; RIOS, E. F. |
Afiliação: |
ANJU BISWAS, Department of Agronomy, University of Florida, Gainesville, FL, United States; MARIO HENRIQUE MURAD LEITE ANDRADE, Department of Agronomy, University of Florida, Gainesville, FL, United States; JANAM P. ACHARYA, Department of Agronomy, University of Florida, Gainesville, FL, United States; CLEBER LOPES DE SOUZA, Department of Agronomy, University of Florida, Gainesville, FL, United States; YOLANDA LOPEZ, Department of Agronomy, University of Florida, Gainesville, FL, United States; GISELLE MARIANO LESSA DE ASSIS, CPAF-AC; SHUBHAM SHIRBHATE, Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, United States; ADITYA SINGH, Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, United States; PATRICIO MUNOZ, Department of Horticultural Sciences, University of Florida, Gainesville, FL, United States; ESTEBAN F. RIOS, Department of Agronomy, University of Florida, Gainesville, FL, United States. |
Título: |
Phenomics-assisted selection for herbage accumulation in alfalfa (Medicago sativa L.). |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Frontiers in Plant Science, v. 12, 756768, Dec. 2021. |
DOI: |
https://doi.org/10.3389/fpls.2021.756768 |
Idioma: |
Inglês |
Conteúdo: |
The application of remote sensing in plant breeding is becoming a routine method for fast and non-destructive high-throughput phenotyping (HTP) using unmanned aerial vehicles (UAVs) equipped with sensors. Alfalfa (Medicago sativa L.) is a perennial forage legume grown in more than 30 million hectares worldwide. Breeding alfalfa for herbage accumulation (HA) requires frequent and multiple phenotyping efforts, which is laborious and costly. The objective of this study was to assess the efficiency of UAV-based imagery and spatial analysis in the selection of alfalfa for HA. The alfalfa breeding population was composed of 145 full-sib and 34 half-sib families, and the experimental design was a row-column with augmented representation of controls. The experiment was established in November 2017, and HA was harvested four times between August 2018 and January 2019. A UAV equipped with a multispectral camera was used for HTP before each harvest. Four vegetation indices (VIs) were calculated from the UAVbased images: NDVI, NDRE, GNDVI, and GRVI. All VIs showed a high correlation with HA, and VIs predicted HA with moderate accuracy. HA and NDVI were used for further analyses to calculate the genetic parameters using linear mixed models. The spatial analysis had a significant effect in both dimensions (rows and columns) for HA and NDVI, resulting in improvements in the estimation of genetic parameters. Univariate models for NDVI and HA, and bivariate models, were fit to predict family performance for scenarios with various levels of HA data (simulated in silico by assigning missing values to full dataset). The bivariate models provided higher correlation among predicted values, higher coincidence for selection, and higher genetic gain even for scenarios with only 30% of HA data. Hence, HTP is a reliable and efficient method to aid alfalfa phenotyping to improve HA. Additionally, the use of spatial analysis can also improve the accuracy of selection in breeding trials. MenosThe application of remote sensing in plant breeding is becoming a routine method for fast and non-destructive high-throughput phenotyping (HTP) using unmanned aerial vehicles (UAVs) equipped with sensors. Alfalfa (Medicago sativa L.) is a perennial forage legume grown in more than 30 million hectares worldwide. Breeding alfalfa for herbage accumulation (HA) requires frequent and multiple phenotyping efforts, which is laborious and costly. The objective of this study was to assess the efficiency of UAV-based imagery and spatial analysis in the selection of alfalfa for HA. The alfalfa breeding population was composed of 145 full-sib and 34 half-sib families, and the experimental design was a row-column with augmented representation of controls. The experiment was established in November 2017, and HA was harvested four times between August 2018 and January 2019. A UAV equipped with a multispectral camera was used for HTP before each harvest. Four vegetation indices (VIs) were calculated from the UAVbased images: NDVI, NDRE, GNDVI, and GRVI. All VIs showed a high correlation with HA, and VIs predicted HA with moderate accuracy. HA and NDVI were used for further analyses to calculate the genetic parameters using linear mixed models. The spatial analysis had a significant effect in both dimensions (rows and columns) for HA and NDVI, resulting in improvements in the estimation of genetic parameters. Univariate models for NDVI and HA, and bivariate models, were fit to predict family... Mostrar Tudo |
Palavras-Chave: |
Fitomejoramiento; Genetic gain; High-throughput phenotyping (HTP); Leguminosas forrajeras; Normalized difference vegetation index (NDVI); Teledetección; Variación espacial. |
Thesagro: |
Alfafa; Leguminosa Forrageira; Medicago Sativa; Melhoramento Genético Vegetal; Sensoriamento Remoto. |
Thesaurus NAL: |
Forage legumes; Phenotype; Plant breeding; Remote sensing; Spatial variation. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/230884/1/27295.pdf
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Marc: |
LEADER 03318naa a2200445 a 4500 001 2139673 005 2022-02-07 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3389/fpls.2021.756768$2DOI 100 1 $aBISWAS, A. 245 $aPhenomics-assisted selection for herbage accumulation in alfalfa (Medicago sativa L.).$h[electronic resource] 260 $c2021 520 $aThe application of remote sensing in plant breeding is becoming a routine method for fast and non-destructive high-throughput phenotyping (HTP) using unmanned aerial vehicles (UAVs) equipped with sensors. Alfalfa (Medicago sativa L.) is a perennial forage legume grown in more than 30 million hectares worldwide. Breeding alfalfa for herbage accumulation (HA) requires frequent and multiple phenotyping efforts, which is laborious and costly. The objective of this study was to assess the efficiency of UAV-based imagery and spatial analysis in the selection of alfalfa for HA. The alfalfa breeding population was composed of 145 full-sib and 34 half-sib families, and the experimental design was a row-column with augmented representation of controls. The experiment was established in November 2017, and HA was harvested four times between August 2018 and January 2019. A UAV equipped with a multispectral camera was used for HTP before each harvest. Four vegetation indices (VIs) were calculated from the UAVbased images: NDVI, NDRE, GNDVI, and GRVI. All VIs showed a high correlation with HA, and VIs predicted HA with moderate accuracy. HA and NDVI were used for further analyses to calculate the genetic parameters using linear mixed models. The spatial analysis had a significant effect in both dimensions (rows and columns) for HA and NDVI, resulting in improvements in the estimation of genetic parameters. Univariate models for NDVI and HA, and bivariate models, were fit to predict family performance for scenarios with various levels of HA data (simulated in silico by assigning missing values to full dataset). The bivariate models provided higher correlation among predicted values, higher coincidence for selection, and higher genetic gain even for scenarios with only 30% of HA data. Hence, HTP is a reliable and efficient method to aid alfalfa phenotyping to improve HA. Additionally, the use of spatial analysis can also improve the accuracy of selection in breeding trials. 650 $aForage legumes 650 $aPhenotype 650 $aPlant breeding 650 $aRemote sensing 650 $aSpatial variation 650 $aAlfafa 650 $aLeguminosa Forrageira 650 $aMedicago Sativa 650 $aMelhoramento Genético Vegetal 650 $aSensoriamento Remoto 653 $aFitomejoramiento 653 $aGenetic gain 653 $aHigh-throughput phenotyping (HTP) 653 $aLeguminosas forrajeras 653 $aNormalized difference vegetation index (NDVI) 653 $aTeledetección 653 $aVariación espacial 700 1 $aANDRADE, M. H. M. L. 700 1 $aACHARYA, J. P. 700 1 $aSOUZA, C. L. de 700 1 $aLOPEZ, Y. 700 1 $aASSIS, G. M. L. de 700 1 $aSHIRBHATE, S. 700 1 $aSINGH, A. 700 1 $aMUNOZ, P. 700 1 $aRIOS, E. F. 773 $tFrontiers in Plant Science$gv. 12, 756768, Dec. 2021.
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