SciELO - Scientific Electronic Library Online

vol.47 número2Videira 'Syrah' sobre diferentes porta-enxertos em ciclo de inverno no sul de Minas GeraisFluxo gênico recíproco entre cultivares de soja convencional e geneticamente modificada índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados


Pesquisa Agropecuária Brasileira

versão impressa ISSN 0100-204X


BUENO, Luíce Gomes et al. Adaptability and stability of accessions of a rice core collection. Pesq. agropec. bras. [online]. 2012, vol.47, n.2, pp.216-226. ISSN 0100-204X.

The objective of this work was to determine the productive potential and the genotype by environment interaction of 550 accessions of the Embrapa's Rice Core Collection. The performance, and yield adaptability and stability of each genotype was evaluated using the additive main effects and multiplicative interactions (AMMI) approach, in nine field experiments, carried out in six Brazilian states, under dry and irrigated conditions, during three years. The linear mixed model analysis was performed, and the estimates of the variance components were obtained by the residual maximum likelihood (REML), using the best linear unbiased prediction (BLUP) procedure for the prediction of the genotypic values of random effects (EBLUP) associated with each accession. The group of accessions with better performance was the one of lines and cultivars from Brazil (LCB), as expected. However, traditional varieties (VT) were identified among the best yielding genotypes, which shows the potential of this germplasm group to contribute as a new source of genetic variability to breeding programs. Superior accessions were identified for their stability, adaptability and grain yield, among which CA880078, CA840182 and CNA00091 stand out.

Palavras-chave : Oryza sativa; AMMI; agronomic characterization; mixed linear model; genetic resources; traditional varieties.

        · resumo em Português     · texto em Português     · Português ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons