Early Determination of Yield Potential in Arabica Coffee by Applying Index Selection

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Date
1979
Authors
Van Der, H. A. M.
Walyaro, D. J.
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Abstract
Estimates of phenotypic and genotypic variances and covariances for a number of quantitative characters in arabica coffee, obtained from a variety trial in Kenya, were used to construct selection indices. The results indicated that the expected genetic advance in yield based on a selection index, containing the first two years yield and measurements of girth at base of stem and percentage bearing primaries, will be almost as large (relative efficiency 97%) as that obtained by straight selection based on I O-years yield totals. This would imply that a breeding cycle of 5 years will be sufficient for efficient selection for higher productivity in Arabica coffee.
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Euphytica, 28, pp. 465-472
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