| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
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| Autores: |
Farias Neto,João Tomé de
Moura,Elisa Ferreira
Resende,Marcos Deon Vilela de
Celestino Filho,Pedro
Augusto,Sebastião Geraldo
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| Data: |
2013-12-01
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| Ano: |
2013
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| Palavras-chave: |
Manihot esculenta
Genotype x environment interaction
HMRPGV
REML/Blup
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| Resumo: |
The objective of this work was to estimate genetic parameters and to evaluate simultaneous selection for root yield and for adaptability and stability of cassava genotypes. The effects of genotypes were assumed as fixed and random, and the mixed model methodology (REML/Blup) was used to estimate genetic parameters and the harmonic mean of the relative performance of genotypic values (HMRPGV), for simultaneous selection purposes. Ten genotypes were analyzed in a complete randomized block design, with four replicates. The experiment was carried out in the municipalities of Altamira, Santarém, and Santa Luzia do Pará in the state of Pará, Brazil, in the growing seasons of 2009/2010, 2010/2011, and 2011/2012. Roots were harvested 12 months after planting, in all tested locations. Root yield had low coefficients of genotypic variation (4.25%) and broad-sense heritability of individual plots (0.0424), which resulted in low genetic gain. Due to the low genotypic correlation (0.15), genotype classification as to root yield varied according to the environment. Genotypes CPATU 060, CPATU 229, and CPATU 404 stood out as to their yield, adaptability, and stability.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001200005
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2013001200005
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.48 n.12 2013
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| Direitos: |
info:eu-repo/semantics/openAccess
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