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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
29/11/2022 |
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Data da última atualização: |
05/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, C. S. dos; SOUSA, M. B. E; BRITO, A. C.; OLIVEIRA, L. A. de; CARVALHO, C. W. P. de; OLIVEIRA, E. J. de. |
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Afiliação: |
CRISTIANO SILVA DOS SANTOS, UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA; MASSAINE BANDEIRA E SOUSA, UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA; ANA CARLA BRITO; LUCIANA ALVES DE OLIVEIRA, CNPMF; CARLOS WANDERLEI PILER DE CARVALHO, CTAA; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Genetic parameters and path analysis for root yield of cassava under drought and early harvest |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Crop Breed. Appl. Biotechnol,v. 21, n.3, 2021. |
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ISSN: |
1518-7853 |
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DOI: |
https://doi.org/10.1590/1984-70332021v21n3a46 |
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Idioma: |
Inglês |
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Conteúdo: |
The objectives of this study were to estimate genetic parameters and identify traits that contribute to early yield in Manihot esculenta Crantz. Ten traits were evaluated in two experiments, one with 138 genotypes and the other with 133, using a completely randomized block design with four replications. All genotype effects were significant. The accuracy was high for the traits, except leaf retention (0.57), and reliability ranged from 0.33 to 0.75. Root weight (RW) and number of roots (NR) showed the highest selection effectiveness (CV r ), although the estimate was less than 1. Moreover, RW and NR obtained high genetic correlation (0.70). Path analysis showed that only number of roots had a significant direct effect on root weight (0.49), and no indirect effect was found. Therefore, accessions exhibited sufficient genetic variability, and indirect selection based on early evaluation of number of roots can be applied in cassava breeding for fresh root yield, increasing gain over time. |
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Thesagro: |
Germoplasma; Mandioca; Manihot Esculenta; Viscosidade. |
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Thesaurus Nal: |
Germplasm; Viscosity. |
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Categoria do assunto: |
-- |
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Marc: |
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001 2148951
005 2022-12-05
008 2021 bl uuuu u00u1 u #d
022 $a1518-7853
024 7 $ahttps://doi.org/10.1590/1984-70332021v21n3a46$2DOI
100 1 $aSANTOS, C. S. dos
245 $aGenetic parameters and path analysis for root yield of cassava under drought and early harvest$h[electronic resource]
260 $c2021
520 $aThe objectives of this study were to estimate genetic parameters and identify traits that contribute to early yield in Manihot esculenta Crantz. Ten traits were evaluated in two experiments, one with 138 genotypes and the other with 133, using a completely randomized block design with four replications. All genotype effects were significant. The accuracy was high for the traits, except leaf retention (0.57), and reliability ranged from 0.33 to 0.75. Root weight (RW) and number of roots (NR) showed the highest selection effectiveness (CV r ), although the estimate was less than 1. Moreover, RW and NR obtained high genetic correlation (0.70). Path analysis showed that only number of roots had a significant direct effect on root weight (0.49), and no indirect effect was found. Therefore, accessions exhibited sufficient genetic variability, and indirect selection based on early evaluation of number of roots can be applied in cassava breeding for fresh root yield, increasing gain over time.
650 $aGermplasm
650 $aViscosity
650 $aGermoplasma
650 $aMandioca
650 $aManihot Esculenta
650 $aViscosidade
700 1 $aSOUSA, M. B. E
700 1 $aBRITO, A. C.
700 1 $aOLIVEIRA, L. A. de
700 1 $aCARVALHO, C. W. P. de
700 1 $aOLIVEIRA, E. J. de
773 $tCrop Breed. Appl. Biotechnol,v. 21$gn.3, 2021.
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| 5. |  | CERQUEIRA, L. R. de S.; ABREU, E. F. M.; ANDRADE, E. C. de. Desenvolvimento de métodos diagnósticos para os vírus causadores da murcha do abacaxizeiro (PMWAV -1, 2 e 3). In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 8., 2014, Cruz das Almas, Ba. Pesquisa: despertando mentes para a inovação e transformando o futuro :[anais]. Cruz das Almas, Ba, Embrapa Mandioca e Fruticultura, 2014.| Tipo: Resumo em Anais de Congresso |
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