Data/hora: 14/06/2024 03:57:54

Biblioteca(s): | Embrapa Amazônia Oriental; Embrapa Unidades Centrais.
Data corrente: | 03/10/2016
Data da última atualização: | 22/01/2021
Autoria: | SILVA, R. de S.; MOURA, E. F.; FARIAS NETO, J. T. de; SAMPAIO, J. E.
Afiliação: | RODRIGO DE SOUZA SILVA, UFRA; ELISA FERREIRA MOURA CUNHA, CPATU; JOAO TOME DE FARIAS NETO, CPATU; JOSE EDSON DE SAMPAIO, CPATU.
Título: | Genetic parameters and agronomic evaluation of cassava genotypes.
Ano de publicação: | 2016
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 7, p. 834-841, jul. 2016.
DOI: | 10.1590/S0100-204X2016000700006
Idioma: | Inglês
Conteúdo: | The objective of this work was to estimate genetic parameters and predict genetic values for the selection of cassava (Manihot esculenta) genotypes in the state of Pará, Brazil. The trial was performed with 56 genotypes in two growing seasons (2012/2013 and 2013/2014), in the municipality of Igarapé?Açu, in the state of Pará, using the augmented blocks design with two control treatments. The evaluated traits were: plant shoot weight (PSW), number of roots per plant (NRP), number of rotten roots per plant (NRRP), fresh root yield (FRY), harvest index (HI), and starch content in the roots (SCR). The restricted maximum likelihood (REML) and best linear unbiased prediction (BLUP) methods were used. There was genetic variability among genotypes for PSW, NRP, HI, and SCR. Broad-sense heritability estimates were low for PSW and SCR, but were moderate for NRP and HI. However, the heritabilities of the average of genotypes were higher for PSW and SCR. The genetic gains of the five best genotypes varied from 6.0 to 11.08% (PSW), 15.81 to 27.10% (NRP), 9.82 to 12.14% (HI), and 1.90 to 2.20% (SCR). There is genetic variability among cassava genotypes, and the possibility of genetic gains based on selection is moderate for this region in the state of Pará.
Palavras-Chave: | Genetic breeding; Variabilidade genética.
Thesagro: | Manihot Esculenta; Melhoramento genético vegetal.
Thesaurus Nal: | Genetic variation.

Categoria do assunto:

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G Melhoramento Genético

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/148123/1/Genetic-parameters.pdf
Registro original: | Embrapa Amazônia Oriental (CPATU)

Exemplares:

AI-SEDE - (60012-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CPATU - (52694-1) - UPC - AP - PP - 630.5 - P472 -  - DIS