Coffee Science
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3355
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Resultados da Pesquisa
Item Selection of Conilon coffee clones for the Zona da Mata region of Minas Gerais, Brazil(Universidade Federal de Lavras, 2022-06-09) Moura, Waldênia de Melo; Pedrosa, Adriene Woods; Oliveira, Rebeca Lourenço de; Cecon, Paulo Roberto; Ferrão, Romário Gava; Ferrão, Maria Amélia Gava; Verdin Filho, Abraão CarlosRecently, the cultivation of Coffea canephora species has expanded as a consequence of climate change effects and emerging markets that use this cof-fee as raw material. To meet such demands of production, it is necessary to also improve yield in cultivated areas. Hence, this study aimed to evaluate Conilon coffee clones to identify the most promising fitting material for the Zona da Mata region of Minas Gerais, as well as to analyze the effect of the genotype x biennium interaction and estimate correlation coefficients among evaluated characteristics. Vegetative vigor, yield, main pests and diseases were evaluated in 36 clones from Incaper, ES. The statistical analyses considered the averages of each biennium: Biennium 1 (B1) - 2005/2006; Biennium 2 (B2) - 2007/2008; Biennium 3 (B3) - 2009/2010, and also the average of three biennia (A3B). Univariate and joint statistical analysis were performed, as well as estimates of phenotypic, genotypic and environmental correlation coefficients among assessed characteristics. A wide variability among clones was observed for most of the evaluated characteristics for both each biennium and the average of three biennia. The severities of most diseases have reduced over the years of cultivation. The genotypic correlation coefficients have overcome phenotypic and environmental ones. In general, pests and diseases severities showed significant and negative correlations with vegetative vigor and yield. On the other hand, the last two characteristics were posi-tively correlated. It was also evidenced a certain diversity among clones for most of the evaluated traits. Clone x biennium interaction was significant only for yield and leaf rust severity. There are negative correlations among the characteristics associated with yield and pests and diseases occurrences, which make it possible the use of yield variable as a selection parameter. Clones 24, 23, 28, 26, 21, 29 and 06 MG/ES present a higher potential for cultivation in the Zona da Mata of Minas Gerais.Item Desempenho de cultivares de café em sistema de moura, cultivo orgânico na zona da mata mineira(Editora UFLA, 2013-07) Moura, Waldênia de Melo; Lima, Paulo César de; Fazuoli, Luiz Carlos; Condé, Aurinelza Batista Teixeira; Silva, Tales CamposObjetivou-se,neste trabalho,avaliar o desempenho de cultivares de café em sistema de cultivo orgânico, visando a indicação de cultivares promissoras para a Zona da Mata Mineira. Os experimentos foram instalados no ano de 2003 e conduzidos até 2009, em delineamento de blocos casualizados com trinta genótipos (cultivares e linhagens) e três repetições, nos municípios de Araponga, Espera Feliz e Tombos, representativos dessa região. Foi utilizada a metodologia de pesquisa participativa e as avaliações iniciaram no ano de 2006, que perduraram por quatro colheitas. As cultivares apresentaram variabilidade para a maioria das características avaliadas. Em geral, foi constatada baixa incidência de pragas e doenças, decorrente de fatores genéticos e provável influência das adubações orgânicas e do controle natural. O vigor vegetativo, a produtividade, a severidade de ferrugem e de cercosporiose apresentaram interação genótipos x locais significativos. Foram identificadas as cultivares de café promissoras para cada local em estudo, incluindo as resistentes, de moderada resistência e suscetíveis à ferrugem. As cultivares Sabiá 708, Catucaí Amarelo 24/137, IBC Palma 1, Paraíso MG H 419-1, Catucaí Vermelho 36/6, Catuaí Vermelho IAC 15, Oeiras MG 6851 e a linhagem H518 são as mais indicadas para o sistema de cultivo orgânico na Zona da Mata Mineira.