Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1022600
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dc.contributor.authorOLIVEIRA, E. J. dept_BR
dc.contributor.authorAIDAR, S. de T.pt_BR
dc.contributor.authorMORGANTE, C. V.pt_BR
dc.contributor.authorCHAVES, A. R. de M.pt_BR
dc.contributor.authorCRUZ, J. L.pt_BR
dc.contributor.authorCOELHO FILHO, M. A.pt_BR
dc.date.accessioned2015-08-24T11:11:11Zpt_BR
dc.date.available2015-08-24T11:11:11Zpt_BR
dc.date.created2015-08-24pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationPesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 3, p. 233-241, mar. 2015.pt_BR
dc.identifier.issn0100-204Xpt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1022600pt_BR
dc.descriptionThe 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEstresse hídricopt_BR
dc.subjectMelhoramento de plantapt_BR
dc.titleGenetic parameters for drought-tolerance in cassava.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-01-28T11:11:11Zpt_BR
dc.subject.thesagroMandiocapt_BR
dc.subject.thesagroMelhoramento vegetalpt_BR
dc.subject.thesagroManihot Esculentapt_BR
dc.subject.nalthesaurusBreedingpt_BR
dc.subject.nalthesaurusCassavapt_BR
dc.subject.nalthesaurusWater stresspt_BR
riaa.ainfo.id1022600pt_BR
riaa.ainfo.lastupdate2016-01-28pt_BR
dc.identifier.doi10.1590/S0100-204X2015000300007pt_BR
dc.contributor.institutionEDER 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.pt_BR
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