Botelho, C.E.; Andrade, V.T.; Abrahão, J.C.R.; Gonçalves, F.M.A. Missing Plants Effects and Stand Correction Methods in Coffea arabica Progeny Experiments. Agronomy2023, 13, 2374.
Botelho, C.E.; Andrade, V.T.; Abrahão, J.C.R.; Gonçalves, F.M.A. Missing Plants Effects and Stand Correction Methods in Coffea arabica Progeny Experiments. Agronomy 2023, 13, 2374.
Botelho, C.E.; Andrade, V.T.; Abrahão, J.C.R.; Gonçalves, F.M.A. Missing Plants Effects and Stand Correction Methods in Coffea arabica Progeny Experiments. Agronomy2023, 13, 2374.
Botelho, C.E.; Andrade, V.T.; Abrahão, J.C.R.; Gonçalves, F.M.A. Missing Plants Effects and Stand Correction Methods in Coffea arabica Progeny Experiments. Agronomy 2023, 13, 2374.
Abstract
Plant loss in experimental plots occurs occasionally in field experiments with coffee crops. In breeding programmes, such loss can be extremely harmful, especially when the statistical analysis methods used are not consistent with the data generated in the experiments. In this study, we analysed a set of productivity data to determine whether the compensatory effect occurs in coffee crops, analyse the need for correcting the number of failures in experiments, and identify the best stand correction method to use. Productivity data from six harvests of 11 experiments with Coffea arabica plants were used. The experiments were implemented in a randomised block design, with four replications and six plants per plot. The following stand correction methods were evaluated: rule of three, Zuber [1], Vencovsky and Cruz [2]covariance of the average or ideal stands, and Cruz [3] and compared to data without correction adjustments. The most adequate correction methods were chosen based on the existence of genetic variance, selective accuracy, and progeny ordering. The compensatory effect was evident from the analysed data, with stand correction shown to be beneficial in progeny competition experiments. The covariance methods using average or ideal stands presented the best results, followed by the method proposed by Cruz [3]. The rule of three and Zuber [1] methods showed unsatisfactory results and are not recommended for stand correction in progeny competition experiments with coffee crops
Keywords
Coffea arabica; stand correction; compensatory effect; unbalanced experiments
Subject
Environmental and Earth Sciences, Other
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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