Metodologias de avaliaçao do desempenho de progenies do cafeeiro (Coffea arabica L.)
Aiming at alternatives for evaluation of coffee plant progenies concerning to grain yield as well as examining the possibility to proceed with selection even when bases on a small number of harvests, data generated by the Brazilian Coffee Institute - Varginha, MG - from progeny competition experiments were analysed. The experimental design was a randomized complete block with three replications and 36 treatments - coffee progenies - which involved the following cultivars: Mundo Novo, Catuai Amarelo, Catuai Vermelho, Acaia, Bourbon Amarelo, Catimor, and Catindu. Analysed data referred to 10 sucessive harvests from 1979 to 1988. A two way analysis of variance was run for both annual and total yields. Also a split-plot in time analysis of variance was performed having as sub-plots ten simple harvests, five groups of two harvests, three groups of three harvests, two groups of both four and five harvests. Progenies x harvests interaction estimates were very high for harvest taken annually, however they were reduced when harvests were considered in groups of two. It was observed that four harvests were sufficient to gather fair amount of information in order to identify superior coffee materials
| Main Authors: | , , , |
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| Format: | biblioteca |
| Published: |
1991
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| Subjects: | COFFEA ARABICA, PROGENIE, RENDIMIENTO, BRASIL, |
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