CONTRIBUTION OFAGRONOMIC TRAITS TO THE YIELD OF Coffea canephora PIERRE EX A. FROEHNER HULLED COFFEE

Spinelli, Victor Mouzinho; Moraes, Marcos Santana; Alves, Darlan Sanches Barbosa; Rocha, Rodrigo Barros; Ramalho, A. R.; Teixeira, Alexsandro Lara

doi:10.25186/cs.v13i3.1452

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…Analyzing the factors obtained, it can be observed that although the superior performance of C. canephora coffee trees with hybrid characteristics between the botanical varieties Conilon and Robusta is known, few studies have sought to better understand the expression of the characteristics associated with the production of this coffee tree. When interpreting estimates of direct and indirect effects of secondary traits in relation to the main trait -bean yield - Spinelli et al (2018) observed that the number of plagiotropic branches and the number of rosettes per productive branch were the characteristics with the greatest direct effect on the processed coffee yield. Positive associations between the number and length of productive branches were also observed by Ferrão et al (2007), who considered estimates of simple and partial, unstructured correlations.…”

Section: Discussionmentioning

confidence: 99%

Factor analysis for plant and production variables in Coffea canephora in the Western Amazon

Silva

Barroso

Cruz

et al. 2022

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The evaluation of morphological characters related to the hulled coffee yield subsidizes the selection of Coffea canephora plants that combine a set of favorable traits. However, the greater the number of traits considered, the more difficult the selection process becomes. In this context, multivariate analyzes can be useful to overcome this problem. The aim of this study was to identify, in a set of agronomic traits of Coffea canephora, the determining factors of biological phenomena and use these factors to recognize patterns of diversity and similarity from biological complexes of interest to the breeder. To this, eleven morphological descriptors were evaluated of 130 clones of the botanical varieties Conilon and Robusta and intervarietal hybrids over two crop years in the experimental field of Embrapa, in the municipality of Ouro Preto do Oeste, state of Rondônia (RO). To group the traits, the multivariate technique of Factor Analysis was used. The effect of genotype x year interaction was significant for the eleven traits analyzed. Based on the scree plot, three factors were established. Factors were interpreted as architecture, vigor and grains with a satisfactory percentage of explained variability. The interpretation of the factors highlighted the importance of the Conilon variety to improve the architecture of the Robusta botanical variety. These results show that it is possible to use factor scores to identify varieties and traits that favor higher production of hulled coffee.

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Section: Discussionmentioning

confidence: 99%

Factor analysis for plant and production variables in Coffea canephora in the Western Amazon

Silva

Barroso

Cruz

et al. 2022

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“…Seventeen previously selected genotypes (Oliveira et al, 2018b;Spinelli et al, 2018) were evaluated by the following morphological and productive traits: plant height, number of productive plagiotropic branches, distance between rosettes of the plagiotropic branch, number of coffee beans per rosette, number of rosettes per plagiotropic branch, length of plagiotropic branch, length and width of leaves, number of days for fruit ripening and coffee bean size. The genotypic value of production was estimated based on production of hulled coffee using the BLUP (Best Linear Unbiased Prediction) method (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Resistance of new Coffea canephora clones to root-knot nematode (Meloidogyne incognita) in the western amazon

Rudnick

Junior

Fernandes

et al. 2020

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Root-knot disease is among the main diseases affecting coffee crop. The plant selection to the development new resistant cultivars is among one the most efficient methods of control. The present work aimed to quantify the resistance responses of Coffea canephora clones to root-knot nematode Meloidogyne incognita in the Western Amazon. For this, 17 previously selected clones were evaluated in three experimental trials, carried out in the municipalities of Ji-Paraná and Porto Velho, Rondônia. The resistance to root-knot nematodes M. incognita were evaluated by the numbers of gall in the roots (NG) and by the reproductive factor (RF). The resistance response was also interpreted according the genetic diversity of the clones based in their morphological traits. The clones BRS3210, C12, BRS2314, BRS3137 and BRS1216 are resistant to M. incognita with RF of 0.34, 0.62, 0.79, 0.86 and 0.98, respectively. BRS3213, C125, C15, BRS2336, BRS3220 and C09 clones were classified as susceptible, with RF of 1.93, 1.95, 2.00, 2.31, 2.32 and 2.35. The BRS3193, C160 and BRS2357 clones were classified as very susceptible, with RF values of 3.03, 4.41 and 5.82, respectively. The clustering based on the genetic diversity of morphological traits indicated that genotypes more similar to the Robusta botanic variety had lower RF. The hybrid plants showed intermediate degrees of resistance indicating the segregation for the character of the M. incognita resistance. The clones BRS3210, C12, BRS2299, BRS2314, BRS3137 and BRS1216 expressed resistance responses to M. incognita with potential for growing resistant genotypes in the Western Amazon.

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“…Understood as the genetic potential of the plant to transform energy from the sun to coffee beans, coffee plant yield (measured in bags of coffee grains per hectare) is an important characteristic in development of new cultivars (FERRÃO et al, 2008;RAMALHO et al, 2016, SPINELLI et al, 2018. The Coffea canephora species has two distinct botanical varieties (CHARRIER & BERTHAUD, 1988;DAVIS et al, 2006, MUSOLI et al, 2009 that are grown in the Western Amazon region:the Conilon botanical variety, characterized by plants of bush-type growth, drought tolerance, and greater susceptibility to diseases; and the Robusta botanical variety, characterized by upright growth, larger sized fruit and leaves, lower drought tolerance, and greater resistance to pests and diseases (ROCHA et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Coffea canephora breeding: estimated and achieved gains from selection in the Western Amazon, Brazil

et al. 2021

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Gain from selection is an important criterion in quantifying the efficiency of breeding programs. This study quantified the selection gain estimated under experimental conditions and realized gain achieved in the field, seeking to interpret the efficiency of the Coffea canephora selection. For that purpose, we considered experiments that began in 2004 with directed hybridizations to obtain new hybrid progenies. From a breeding population composed of 288 hybrid individuals, 12 genotypes were selected in experimental conditions from 2005 to 2012, with amplitude in the estimated gains from 127.70 to−19.19%. Those genotypes were evaluated from 2012 to 2018 in clonal tests in four environments of the Western Amazon. The environment that exhibited the greatest correlation between the predicted genetic values and the realized genetic gain observed in the field was the environment of Ouro Preto do Oeste, RO (0.67), the location in which the plants were selected, followed by the environments of Alta FlorestaD´Oeste, RO (0.44), Rio Branco, AC (0.43), and Porto Velho, RO (0.37).Experimental conditions showed that the effect due to dominance deviations was approximately three times greater than the additive effect. Nine clones exhibited higher genetic gains in the experimental conditions and at field, and two clones exhibited lower estimated gains and lower field performance.The clone G17-P7 exhibited high genetic gain under experimental conditions and low field performance. The selection in experimental conditions was positively correlated with plant performance in the field (r=0.55), which allows reduction of the original breeding population to a set of more promising clones to be grown in multiple environments, optimizing time and resources.

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CONTRIBUTION OFAGRONOMIC TRAITS TO THE YIELD OF Coffea canephora PIERRE EX A. FROEHNER HULLED COFFEE

Cited by 9 publications

References 17 publications

Factor analysis for plant and production variables in Coffea canephora in the Western Amazon

Factor analysis for plant and production variables in Coffea canephora in the Western Amazon

Resistance of new Coffea canephora clones to root-knot nematode (Meloidogyne incognita) in the western amazon

Coffea canephora breeding: estimated and achieved gains from selection in the Western Amazon, Brazil

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