Prediction of genotypic values and estimation of genetic parameters in common bean

Brazilian Archives of Biology and Technology

Alisson Fernando Chiorato²  Sérgio Augusto Morais Carbonell²  Luiz Antônio Dos Santos Dias¹  Marcos Deon Vilela De Resende¹ 

[1] ,Instituto Agronômico Centro de Análises e Pesquisa Tecnológica do Agronegócio dos Grãos e Fibras Campinas SP ,Brazil

关键词: REML;    BLUP;    Phaseolus vulgaris;    Mixed Models;   

DOI  :  10.1590/S1516-89132008000300005

来源: SciELO

【 摘 要 】

Eighteen common bean (Phaseolus vulgaris L.) genotypes were evaluated in 25 environments of the state of São Paulo in 2001 and 2002. The estimation of genetic parameters by the Restricted Maximum Likelihood (REML) and the prediction of genotypic values via Best Linear Unbiased Prediction (BLUP) were obtained by software Selegen-REML/BLUP. The estimate of the broad-sense heritability was low for the grain yield (0.03), since it took individual plots into consideration and was free of the effects of interaction with years, cultivation periods and site. Nevertheless, the heritability at the level of line means across the various environments was high (0.75), allowing a high accuracy (0.87) in the selection of lines for planting in the environment mean. Among the 18 genotypes, the predicted genotypic values of nine were higher than the general mean. The genetic gain predicted with the selection of the best line, in this case line Gen 96A31 of the IAC, was 16.25%.

【 授权许可】

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