Genetic gain in the productivity of processed coffee from the selection of clones of 'Conilon' coffee

Ramalho, A. R.; Rocha, Rodrigo Barros; Souza, Flávio F. de; Veneziano, Wilson; Teixeira, Alexsandro Lara

doi:10.5935/1806-6690.20160062

Cited by 23 publications

(14 citation statements)

References 6 publications

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“…Despite the lower overall productivity of this lastmentioned environment, which was limited by the lack of irrigation and higher soil acidity, the average productivity of this clone in this environment (41.1 bags ha -1 ) was still higher than the experimental average and the performance of the controls. Productivities observed in this study were comparable to those reported by RAMALHO et al (2016) when estimating the genetic progress within the selection of fifteen genotypes of the botanical variety Conilon. These authors reported productivities varying from 27.7 to 121.4 bags ha -1 in a preliminary clonal competition test, and from 16.6 to 133.1 bags ha -1 in a final competition test of clones.…”

Section: Genetic Parametersupporting

confidence: 85%

“…In the same state, FERRÃO et al (2008) also reported estimates higher than 0.8. RAMALHO et al (2016), SILVA et al (2018), and TEIXEIRA et al (2017 observed heritability values of 0.94, 0.84, and 0.79, respectively, in experiments conducted in the state of Rondônia.…”

Section: Resultsmentioning

confidence: 97%

“…The selection of C. canephora genotypes should consider the average SG% of several years, due to the high production oscillations of annual crops (MISTRO et al, 2004). Relevant gains by the selection of superior C. canephora genotypes in the state of Rondônia were pointed out by RAMALHO et al (2016) who verified that an average gain of 25 bags ha -1 could be obtained through plant selection. In addition, SILVA et al (2018), while applying a selection intensity of 10% on 130 genotypes of the botanical varieties Conilon, Robusta, and natural hybrids, observed a genetic progress of 49.88%, resulting in an average increase of 21.23 bags ha -1 over three years in the breeding population.…”

Section: Genetic Parametermentioning

confidence: 99%

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

et al. 2020

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The development of Coffea canephora cultivars is based on the characterization of genotype × environment interaction, which is interpreted to quantify the differential behavior of clones at different cultivation sites. The objective of this research was to study the genotype x environment interaction aiming to select clones of broad and specific adaptation to different environments of the Western Amazon. Twelve clones with hybrid characteristics of the botanical varieties Conilon and Robusta and four open pollinated clones, had their performance evaluated in comparison with four controls. The genotype × environment interaction was interpreted based on the environmental quality index, the non-parametric estimator of Lin and Binns, 1988 and on the dispersion of the centroid method. Effects of the genotypes, environment, and genotype × environment interaction were all significant (p<0.01). The environmental quality index (Ij) classified three environments as favorable for coffee production. In terms of the Lin and Binn’s estimator (Pi), hybrid genotypes 16, 10, 13, 09 and 14 presented lower Pi indices than others, and were classified as being more stable. Five clones of low adaptability, seven clones of specific adaptability to favorable or unfavorable environments and two clones of broad adaptability to all environments were identified interpreting the dispersion of the centroid method.

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Section: Genetic Parametersupporting

confidence: 85%

Section: Resultsmentioning

confidence: 97%

Section: Genetic Parametermentioning

confidence: 99%

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

et al. 2020

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“…Although, commercially the two botanical groups are known only as "Robusta coffee," separation of botanical varieties allows the systematic production of hybrid progenies, exploiting the hybrid vigor manifested in the intervarietal crossing, with the possibility of bringing together in the same genotype the best characteristics of the botanical varieties Conilon and Robusta. Natural hybrids that have the smallest size, resistance to drought of the Conilon, largest sieve, and resistance to pests and diseases of Robusta have stood out in field evaluations (RAMALHO et al, 2016;DALCOMO et al, 2015;DUBBERSTEIN et al, 2017). MONTAGNON et al (2008) observed that on average the hybrid individuals presented a 15% higher productivity in comparison with their parents.…”

Section: Resultsmentioning

confidence: 99%

Selection of Coffea canephora parents from the botanical varieties Conilon and Robusta for the production of intervarietal hybrids

et al. 2018

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The objective of this research was to quantify the genetic divergence of potential Coffea canephora parents, with the goal of developing progenies that associate the best traits of the Conilon and Robusta botanical varieties for hybrid vigor expression. Thus, 10 morphological and productive characteristics of 130 clones of Conilon and Robusta botanical varieties and their intervarietal hybrids were evaluated over 2 years. The experiment was conducted in a randomized block design with four replicates of four plants per plot. For selection of parents, the main component analysis was used to associate values with reference points obtained from the average of each botanical variety. The first two principal components allowed for the separation of the botanical varieties representing the variability contained in the original data with 76% for the first year and 69% for the second year. Although, the genotype × years interaction had significant effects, there were minor differences in the grouping from one year to the next, which is associated with the higher repeatability estimates observed in this study. It was observed that crosses with the 16-1-81I, 9-1-82L, and 13-1-61I parents of the botanical variety Robusta and the 167I, 890E, and 130I parents of the Conilon botanical variety presented greater potential for obtaining selection gains.

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“…In this view, vegetative propagation is the most common practice, ensuring uniform crop development, high yields, better coffee quality and better maturation patterns [7][8][9], although it reduces the species genetic diversity. Therefore, exploring the genetic diversity in coffee farms is of utmost importance to achieve crop sustainability [10,11]. Several studies have addressed this topic in order to identify elite genotypes of C. canephora [9,12,13].…”

Section: Introductionmentioning

confidence: 99%

Root Trait Variability in Coffea canephora Genotypes and Its Relation to Plant Height and Crop Yield

et al. 2020

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Coffee breeding based on root traits is important to identify productive genotypes under adverse environmental conditions. This study assessed the diversity of root traits in Coffea canephora and its correlation with plant height and crop yield. Undisturbed soil samples were collected down to 60 cm from 43 coffee genotypes, in which one of them was propagated by seed and all others by stem cutting. The roots were washed, scanned, and processed to quantify root length density, root volume, root superficial area, and root diameter. Additionally, plant height and crop yield were also assessed. Root length density ranged from 40 to 1411 mm cm−3, root volume from 6 to 443 mm3 cm−3, root superficial area from 61 to 1880 mm2 cm−3, and root diameter from 0.6 to 1.1 mm. Roots were concentrated in the topsoil (0–20 cm) for most genotypes. In deeper depths (30–60 cm), root length density, root volume, and root superficial area were higher in genotypes 14, 25, 31, and 32. Positive correlations were found between root traits and both plant height and crop yield. The results of this work may contribute to the overall cultivation of C. canephora, specially for crop breeding in adverse environmental conditions.

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Genetic gain in the productivity of processed coffee from the selection of clones of 'Conilon' coffee

Cited by 23 publications

References 6 publications

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

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

Selection of Coffea canephora parents from the botanical varieties Conilon and Robusta for the production of intervarietal hybrids

Root Trait Variability in Coffea canephora Genotypes and Its Relation to Plant Height and Crop Yield

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