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Pesquisa Agropecuária Brasileira

On-line version ISSN 1678-3921

Abstract

CECON, Paulo Roberto et al. Repeated measure analysis in the clonal evaluation in 'Conilon' coffee. Pesq. agropec. bras. [online]. 2008, vol.43, n.9, pp. 1171-1176. ISSN 1678-3921.  http://dx.doi.org/10.1590/S0100-204X2008000900011.

The objective of this work was to evaluate the production of fifty clonal varieties coffee 'Conilon' (Coffea canephora), through the repeated measure methodology in order to identify and cluster them to obtain more productive genetic materials and to model, simultaneously, the correlation between subsequent years. The influence of productive cycles was efficiently regarded in the analysis by modeling the correlations between successive records of the genetic materials of five years (1997 to 2001), through this statistical methodology. The repeated measure analysis showed annual oscillations over the cycles of C. canephora, related to the largest productions in the third and forth years. Moreover, the cluster analysis grouped the 50 clones into 10 groups, according to standard production oscillations identified through the adopted regression model.

Keywords : Coffea canephora; productive cycles; plant breeding.

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