Adaptabilidade e estabilidade da produção de café beneficiado em <italic>Coffea canephora</italic>

Abstract

&lt;p&gt;O objetivo deste trabalho foi comparar a capacidade discriminatória de métodos para seleção e recomendação de clones de cafeeiros da espécie&lt;bold&gt; Coffea canephora&lt;/bold&gt;, considerando a interação genótipos x anos na distribuição da produtividade de café beneficiado, nos períodos de 2000 a 2004 e de 2007 a 2011. O efeito significativo da interação genótipos x anos indicou que existem clones que apresentaram desempenho não consistente ao longo do tempo. Os métodos de &lt;xref ref-type="bibr" rid="B10"&gt;LIN &amp; BINNS (1988&lt;/xref&gt;) e &lt;xref ref-type="bibr" rid="B1"&gt;ANNICCHIARICO (1992&lt;/xref&gt;) apresentaram resultados similares, de modo que um deles pode ser utilizado em substituição ao outro. O método de EBERHART &amp; RUSSEL (1966) identificou parte dos clones de adaptação específica, enquanto que os métodos, MHPRVG e centroide permitiram caracterizar os clones de maior adaptabilidade e estabilidade, apresentando resultados complementares. A seleção de plantas baseada na distribuição da produtividade de café beneficiado ao longo do tempo permitiu selecionar clones de desempenho superior sem acentuar a bienalidade.&lt;/p&gt;

Adaptability and stability of Coffea canephora Pierre ex Froehner genotypes in the Western Amazon

“…Heritability estimates (h 2 ) higher than 0.80 indicated predominance of the genotypic component in the expression of this trait (FERRÃO et al, 2008) (Table 4). These estimates depend on the genetic materials, experimental conditions and environmental effects (BIKILA et al, 2017, ROCHA et al, 2015. Estimates of heritability varying between 0.83 and 0.93 were observed by RODRIGUES et al (2012) in their evaluation of processed coffee production in C. canephora genotypes with early, intermediate, and late maturation in Espírito Santo.…”

“…During the selection of plants, the identification of genotypes with broad and specific adaptability allows the effects of the genotype × environment interaction to be explored (RAHN et al, 2018;ROCHA et al, 2015). Methods based on multivariate statistics allowed interpreting the adaptability and stability of several genotypes simultaneously, classifying them according to their performance (HAMAWAKI et al, 2015;ANDERSON, 2003).…”

Adaptability and stability in commercial maize hybrids in the southeast of the State of Minas Gerais, Brazil

“…In addition to these two methods, the method of mixed models has been used in recommending cultivars of various crops: carrots (SILVA et al, 2011), coffee (ROCHA et al, 2015) and beans (TORRES et al, 2015), as it displays some advantages over traditional methods (RESENDE, 2007). The method considers the errors correlated within locations, provides genetic values already discounting instability, and allows selection by three attributes at one time (productivity, stability and adaptability).…”

Adaptability and stability of organic-grown arabica coffee production using the modified centroid method

“…Among several methodologies for this purpose, the centroid method (Rocha et al 2005) has been widely used in several crops, including soybean (Barros et al 2010, Pelúzio et al 2010, Barros et al 2012, tomato (Pereira et al 2012), sweet potato (Amorin et al 2011), and coffee (Rocha et al 2015). The centroid method is based on the principal components methodology, and takes into account the genotype x environment interaction.…”