Genotype × Environment Interaction in the Coffee Outturn Index of Amazonian Robusta Cultivars

Abstract

The coffee outturn index, understood as the relation between the cherry coffee fruit harvested from the field and its respective processed grains, is an important component of the Coffea canephora bean yield. The aim of this study was to quantify the coffee outturn index of the Amazon Robusta cultivars grown in irrigated and dryland Western Amazon environments. According to the maturation cycle of each clone, washed samples of cherry coffee were collected considering a completely randomized factorial design for characterization of the effects of genotypes, environments, and the genotype × environment (G×E) interaction. The contrasting environments of Porto Velho, RO, and Ouro Preto do Oeste, RO, Brazil, represent most of the coffee growing sites located in Am and Aw climate types, cultivated in Red and Yellow Oxisols, typical of the Western Amazon. The weight reductions through drying exhibited a G×E interaction of the complex type, which is characterized by a change in the ordering of genotypes from one environment to another, whereas the weight reductions through hulling exhibited a G×E interaction predominantly of the simple type. The reduction in weight due to drying was more affected by the environment than reduction in weight after pulping. The clones BRS1216, BRS 3220, and BRS3137 had the highest outturn index estimates and the clones BRS2314, BRS3213, and BRS2336 had the lowest outturn index estimates. The clones BRS2299, BRS3210, BRS3193, and BRS2357 had performance near the mean value of this group of genotypes. Considered together, the genotypes had a mean outturn of 24.41%, with an amplitude from 22.5% to 27.2%.

Robustas Amazônicos: Qualidade Do Café De Rondônia

“…A peneira média se refere ao percentual de grãos chatos retidos em um conjunto de peneiras de diferentes tamanhos. (18) ; Teixeira et al, 2020 (19) .…”

“…No entanto, sabe-se que a interação genótipo x ambiente altera as características agronômicas das plantas (18) e consequentemente suas características químicas, sendo necessários mais estudos para compreender esta importante questão para os cafeeiros cultivados na Amazônia Ocidental. Rev Cient da Fac Educ e Meio Ambiente: Revista Científica da Faculdade de Educação e Meio Ambiente -FAEMA, Ariquemes, v. 14, n. 2, p. 466-481, 2023.…”

Propriedades de engenharia de grãos dos genótipos de Coffea canephora mais cultivados na Amazônia Ocidental

“…Isso se deve ao processo de transformação nas lavouras a partir do ano de 2010, onde as lavouras semíferas foram substituídas por lavouras formadas por mudas propagadas vegetativamente por meio de estaquia, conhecido como clonagem (ESPINDULA et al, 2022).…”

“…Os clones plantados no estado apresentam significativa variabilidade genética, com formas e tamanhos dos frutos variadas, onde tais características são evidenciadas em campo pelos próprios produtores. Dentre os principais clones plantados no estado, tem-se o P50 que apresenta frutos pequenos, o GJ3, GJ5, AS2, P42, 88 com frutos de tamanhos médios e o GJ8, GJ25, GB7, SK41, SK80 com frutos grandes (RONDÔNIA, 2020;ESPINDULA et al, 2022).…”