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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Semiárido; Embrapa Unidades Centrais. |
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Data corrente: |
22/05/2015 |
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Data da última atualização: |
28/01/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; AIDAR, S. de T.; MORGANTE, C. V.; CHAVES, A. R. de M.; CRUZ, J. L.; COELHO FILHO, M. A. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; SAULO DE TARSO AIDAR, CPATSA; CAROLINA VIANNA MORGANTE, CPATSA; AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; JAILSON LOPES CRUZ, CNPMF; MAURICIO ANTONIO COELHO FILHO, CNPMF. |
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Título: |
Genetic parameters for drought-tolerance in cassava. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 3, p. 233-241, mar. 2015. |
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ISSN: |
0100-204X |
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DOI: |
10.1590/S0100-204X2015000300007 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to evaluate the effect of drought on genetic parameters and breeding values of cassava. The experiments were carried out in a completely randomized block design with three replicates, under field conditions with (WD) or without (FI) water deficit. Yield of storage roots (RoY), shoot (ShY), and starch (StY), as well as the number of roots (NR), and root dry matter content (DMC) were evaluated in 47 cassava accessions. Significant differences were observed among accessions; according to heritability, these differences had mostly a genetic nature. Heritability estimates for genotypic effects ( ) ranged from 0.25±0.12 (NR) to 0.60±0.18 (DMC), and from 0.51±0.17 (NR) to 0.80±0.21 (RoY and StY) for WD and FI, respectively, as a consequence of greater environmental influence on WD. Selective accuracy was lower in WD, and ranged from 0.71 (NR) to 0.89 (RoY, DMC, and StY). However, genetic gains were quite high and ranged from 24.43% (DMC) to 113.41% (StY), in WD, and from 8.5% (DMC) to 75.70% (StY) in FI. These genetic parameters may be useful for defining which selection strategies, breeding methods, and experimental designs are more suitable to obtain cassava genetic gains for tolerance to drought. |
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Palavras-Chave: |
Estresse hídrico; Melhoramento de planta. |
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Thesagro: |
Germoplasma; Mandioca; Manihot Esculenta; Melhoramento vegetal. |
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Thesaurus Nal: |
Breeding; Cassava; Water stress. |
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Categoria do assunto: |
--
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/128537/1/Agnaldo-2015.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/124503/1/Genetic-parameters-for-drought-rolerance.pdf
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Marc: |
LEADER 02130naa a2200313 a 4500
001 2022600
005 2016-01-28
008 2015 bl uuuu u00u1 u #d
022 $a0100-204X
024 7 $a10.1590/S0100-204X2015000300007$2DOI
100 1 $aOLIVEIRA, E. J. de
245 $aGenetic parameters for drought-tolerance in cassava.
260 $c2015
520 $aThe objective of this work was to evaluate the effect of drought on genetic parameters and breeding values of cassava. The experiments were carried out in a completely randomized block design with three replicates, under field conditions with (WD) or without (FI) water deficit. Yield of storage roots (RoY), shoot (ShY), and starch (StY), as well as the number of roots (NR), and root dry matter content (DMC) were evaluated in 47 cassava accessions. Significant differences were observed among accessions; according to heritability, these differences had mostly a genetic nature. Heritability estimates for genotypic effects ( ) ranged from 0.25±0.12 (NR) to 0.60±0.18 (DMC), and from 0.51±0.17 (NR) to 0.80±0.21 (RoY and StY) for WD and FI, respectively, as a consequence of greater environmental influence on WD. Selective accuracy was lower in WD, and ranged from 0.71 (NR) to 0.89 (RoY, DMC, and StY). However, genetic gains were quite high and ranged from 24.43% (DMC) to 113.41% (StY), in WD, and from 8.5% (DMC) to 75.70% (StY) in FI. These genetic parameters may be useful for defining which selection strategies, breeding methods, and experimental designs are more suitable to obtain cassava genetic gains for tolerance to drought.
650 $aBreeding
650 $aCassava
650 $aWater stress
650 $aGermoplasma
650 $aMandioca
650 $aManihot Esculenta
650 $aMelhoramento vegetal
653 $aEstresse hídrico
653 $aMelhoramento de planta
700 1 $aAIDAR, S. de T.
700 1 $aMORGANTE, C. V.
700 1 $aCHAVES, A. R. de M.
700 1 $aCRUZ, J. L.
700 1 $aCOELHO FILHO, M. A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 50, n. 3, p. 233-241, mar. 2015.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
25/02/2010 |
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Data da última atualização: |
13/06/2017 |
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Tipo da produção científica: |
Autoria/Organização/Edição de Livros |
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Autoria: |
JORGE, L. A. de C.; SILVA, D. J. da C. B. |
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Afiliação: |
LUCIO ANDRE DE CASTRO JORGE, CNPDIA. |
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Título: |
Anatro Livre: manual de utilização. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
São Carlos, SP: Embrapa Instrumentação Agropecuária, 2009. |
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Páginas: |
19 p. |
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ISBN: |
978-85-86463-22-8 |
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Idioma: |
Português |
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Palavras-Chave: |
Anatro Livre; Manual; Software Análise de tronco de árvores. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPDIA-2010/12638/1/LI05-2009.pdf
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Marc: |
LEADER 00491nam a2200169 a 4500
001 1658948
005 2017-06-13
008 2009 bl uuuu 00u1 u #d
020 $a978-85-86463-22-8
100 1 $aJORGE, L. A. de C.
245 $aAnatro Livre$bmanual de utilização.
260 $aSão Carlos, SP: Embrapa Instrumentação Agropecuária$c2009
300 $a19 p.
653 $aAnatro Livre
653 $aManual
653 $aSoftware Análise de tronco de árvores
700 1 $aSILVA, D. J. da C. B.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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