Yield, maturation cycle, and estimates of genetic parameters of Robusta coffee genotypes under irrigation in the Cerrado
| Autor: | Ricardo Menezes Sayd, José Ricardo Peixoto, Renato Fernando Amabile, Mateus Rollemberg Santin, Mateus Costa Coelho |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Variância fenotípica
Irrigation education.field_of_study phenotypic variance biology Crop yield Population Repeatability Coffea canephora biology.organism_classification Coffea canephora Pierre ex Froehner Crop Horticulture Repetibilidade Yield (wine) General Earth and Planetary Sciences Café - cultivo crop breeding Café repeatability education Agronomy and Crop Science Selection (genetic algorithm) Biotechnology General Environmental Science |
| Zdroj: | Crop Breeding and Applied Biotechnology v.19 n.4 2019 Crop Breeding and Applied Biotechnology Sociedade Brasileira de Melhoramento de Plantas instacron:CBAB Crop Breeding and Applied Biotechnology, Volume: 19, Issue: 4, Pages: 387-394, Published: 05 DEC 2019 Repositório Institucional da UnB Universidade de Brasília (UnB) instacron:UNB |
| Popis: | Eighty-five Coffea canephora genotypes were evaluated for three crop seasons under irrigation in the Cerrado of the Distrito Federal, Brazil, to characterize the population regarding phenotype, yield and maturation cycle. The experiment was conducted through the Basic Model of Repeatability without Design methodology. Regarding the cycles, genotypes were divided into four groups with the following periods, in days, from resumption of irrigation to the cherry stage: very early (243-255), early (256-267), medium (268-280), and semi-late (281-293). For yield, the repeatability obtained was approximately 33%, a medium value that represents the proportion of the permanent phenotypic variance in relation to the total phenotypic variance. The average repeatability obtained surpassed 59%, and accuracy, with three crop seasons, reached 77%. The selection gains obtained may be higher than 38%. There are promising genotypes for cultivation in the region under study. The mean repeatability and the accuracy obtained favor selection based on phenotypes. |
| Databáze: | OpenAIRE |
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