Divergência genética em café conilon

Fonseca, Aymbiré Francisco Almeida da; Sediyama, Tocio; Cruz, Cosme Damião; Sakaiyama, Ney Sussumu; Ferrão, Maria Amélia Gava; Ferrão, R. G.; Bragança, Scheilla Marina

doi:10.1590/s0100-204x2006000400008

Cited by 35 publications

(43 citation statements)

References 6 publications

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“…Other genetic studies involving C. canephora also highlighted the existence of differences between genotypes regard different characteristics, such as crop yield, number of orthotropic and plagiotropic branches emitted per plant, canopy size, plant height, fruit size, beverage quality, maturation cycle, percentage of fruits with empty locules, length of reproductive branches, and stem diameter (FONSECA, 1999;FERREIRA, 2003;FONSECA et al, 2006;FERRÃO et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…Coffea canephora presents high crossfertilisation and self-incompatibility; therefore, populations of this species of coffee tend to express significant variability with regard to many agronomic traits, such as plant architecture, duration of ripening cycle, uniformity of maturation, size and weight of grains, susceptibility to coffee pests, and productive potential (FONSECA, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Diversity among genotypes of conilon coffee selected in Espírito Santo state

Rodrigues¹,

Tomaz²,

Ferrão³

et al. 2015

Biosci. J.

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ABSTRACT:The use of multivariate techniques for factor analysis is an efficient alternative for coffee breeding programs. This study aimed to evaluate the genetic diversity of 60 genotypes of conilon coffee based on agronomic performance in the northern state of Espírito Santo and to estimate the relative contribution of different agronomic characteristics towards the diversity of the species. The data were collected in an experiment conducted on the Experimental Farm of Bananal do Norte (Instituto Capixaba de Pesquisa, Assistência Técnica e Extenção Rural -INCAPER) in the southern state of Espírito Santo, and 12 agronomic characteristics were evaluated over four sequential harvests (4 years). Significant differences between the genotypes were observed for all of the characteristics, indicating the possibility of exploiting the high genetic variability to classify the genotypes into different groups based on their similarities. Of the agronomic characteristics, the duration of the ripening cycle was the variable that contributed the most to the variability among the 60 genotypes, with a relative contribution of 70.02%.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diversity among genotypes of conilon coffee selected in Espírito Santo state

Rodrigues¹,

Tomaz²,

Ferrão³

et al. 2015

Biosci. J.

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“…The choice of the most appropriate method should be performed according to the desired precision, the ease of analysis and the way the data were obtained (Fonseca et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Research Article Genetic diversity among 16 genotypes of Coffea arabica in the Brazilian cerrado.

Machado¹,

Pimentel²,

Golynsk³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. For the selection of coffee plants that have favorable characteristics, it is necessary to evaluate variables related to production. Knowledge of the genetic divergence of arabica coffee is of extreme importance, as this knowledge can be associated with plant breeding programs in order to combine genetic divergence with good productive performance. The objective of this study was to evaluate the genetic divergence among 16 genotypes of Coffea arabica with the purpose of identifying the most dissimilar genotypes for the establishment of breeding programs and adaptation to the Brazilian cerrado. The genetic divergence was evaluated using multivariate procedures, the analysis of the average grouping unweighted pair group method with arithmetic mean (UPGMA) and main components in 2013 and 2014. Eight characters were evaluated in an experiment conducted in Morrinhos, Goiás. The presence of genetic divergence among the 16 C. arabica genotypes under cerrado conditions was recorded. The formation of UPGMA groups for the evaluated characteristics was pertinent due to the number of genotypes. The first three major components accounted for 81.77% of the total variance. The genotype H-419-3-4-4-13(C-241) of low size was the most divergent, followed by Catucaí 2 SL and Catiguá MG2, according to the main components.

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“…The number of groups demonstrates the broad variability among the genotypes tested. Fonseca et al (2006), working with 32 genotypes of Conilon coffee, and Ivoglo et al (2008), with 21 offspring that were genetically half Conilon coffee, observed the formation of three and four groups, respectively. Dias et al (2005) evaluated 25 progenies of Arabica coffee, observed the formation of five distinct groups.…”

Section: Genetic Divergencementioning

confidence: 99%

Development of clonal seedlings of promising Conilon coffee (Coffea canephora) genotypes

Covre¹,

Canal²,

Partelli³

et al. 2016

Aust J Crop Sci

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Conilon coffee is a highly heterozygous diploid plant that is also allogamous, producing seeds through cross-fertilisation. Due to their allogamy, plants of seminiferous origin are highly heterogeneous, exhibiting high morphological and genetic diversity. However, propagation through cutting guarantees the maximum homogeneity of fields, particularly in grain maturation, among other desirable characteristics. Currently, the majority of commercial Conilon coffee is planted using seedlings propagated by cuttings. Studying the juvenile behaviour of different clonal genotypes of the Conilon coffee plant represents an important tool to assist with the establishment of this crop. The objective of this study was to assess the growth, development and genetic diversit y in several promising genotypes of the Conilon coffee plant based on the morphological characteristics of seedlings propagated by cutting. We used seedlings Conilon coffee of 33 genotypes selected by coffee growers, and with great productive potential, and genotype 02 of the Emcapa 8111 variety. Based on morphological characteristics linked to the growth and development of the aboveground and root systems of the genotypes, their phenotypic correlations were estimated, along with the genetic diversity among genotypes, using Tocher's optimisation method and the unweighted peer group method with arithmetic mean. Genotypes A1, P2, Z39, Ouro Negro, Tardio C, Cheique, and Z29 exhibited a higher Dickson quality index (between 0.40 and 0.56). Genetic variability exists among the seedlings of the 34 genotypes of Conilon coffee studied. The most dissimilar genotypes were CHR, 18, and Z39, which remained in isolated groups in all experiments.Keywords: Coffea canephora; Genetic diversity; Variability; Vegetative propagation; Phenotypic correlation. Abbreviations: ADM_aboveground dry matter; ANA_National Water Agency; CONAB_National Food Supply Agency; DAPC_days after planting by cutting DQI_Dickson quality index; EMS_etiolation of the main stem; ICO_International Coffee Organization; LA_leaf area; LDM_leaf dry matter; LLR_length of largest root; MAPA_Brazilian Ministry of Agriculture; NIPS_number of internodes on the primary stem; NISS_number of internodes on the secondary stem; NOS_number of orthotropic shoots; NPR_number of primary roots; NPTB_number of plagiotropic branches; PSBD_primary stem base diameter; PSH_primary stem height; RDM_root dry matter; RV_root volume; SDM_stem dry matter; SLM_specific leaf mass; SSBD_secondary stem base diameter; SSH_secondary stem height; TDM_total dry matter; and UPGMA_hierarchical unweighted pair group method with arithmetic mean.

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Divergência genética em café conilon

Cited by 35 publications

References 6 publications

Diversity among genotypes of conilon coffee selected in Espírito Santo state

Diversity among genotypes of conilon coffee selected in Espírito Santo state

Research Article Genetic diversity among 16 genotypes of Coffea arabica in the Brazilian cerrado.

Development of clonal seedlings of promising Conilon coffee (Coffea canephora) genotypes

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