Comportamento de cultivares de cafeeiros C. Arabica L. enxertados sobre cultivar 'Apoatã IAC 2258' (Coffea canephora)

Paiva, Patrícia Duarte de Oliveira; Mendes, Antônio Nazareno Guimarães; Carvalho, G R; Rezende, Juliana Costa de; Ferreira, André Dominghetti; Carvalho, Alex Mendonça de

doi:10.1590/s0103-84782012000700003

Cited by 10 publications

(9 citation statements)

References 11 publications

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“…Robusta) (Table 4). Although these genotypes allowed multiplication of the nematode (RF>1), there was not significant damage in their roots compared to the Apoatã controls (resistant), which have a voluminous root system (PAIVA et al, 2012). However, tolerance to damage may be separate from resistance because it refers to the ability of a given host plant to compensate or recover from adverse effects of attack from a determined nematode and, nevertheless, produce well (VANSTONE et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

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Characterization of resistance response of Coffea canephora genotypes to Meloiddogyne incognita (Est I2) root-knot nematode

Santos

Rocha

Silveira

et al. 2018

C.Sci.

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ABSTRACT:Meloidogynose is prominent among the factors that limit yield in C. canephora in the western Amazon, Brazil. It is caused by species of "root-knot nematode"; the most important and aggressive of these species for coffee is M. incognita. The aim of this study was to assist the selection of resistant genotypes by characterizing the reaction of 32 C. canephora clones to M. incognita (Est I2). These genotypes are selected plants from the Germplasm Bank of Embrapa Rondônia of the botanical varieties Conilon, Robusta and intervarietal hybrids. The experiments were conducted under greenhouse conditions by inoculating six seedlings for each clone with 10 ml of suspension containing 5000 eggs of a pure inoculum of M. incognita. At 150 days after inoculation, evaluations were made of fresh weight of roots (FWR), total number of galls (NG), total number of eggs (NE), and the nematode reproduction factor (RF=final population/initial population). In contrast with the susceptible controls of arabica coffee (RF=1.2) and tomato plants (RF=31.3), six clones of the Conilon botanical variety, five clones of the Robusta botanical variety and eight intervarietal hybrids reacted as resistant to M. incognita, exhibiting RF<1 and a reduced number of galls (NG mean = <10). The clones identified as resistant in this study were integrated in the coffee breeding program in Rondônia for development of cultivars resistant to the root-knot nematode adapted to tropical conditions. Index terms: Coffee, meloidogynose, plant selection, plant breeding, Rondônia. Caracterização da resposta de resistência de genótipos de Coffea canephora ao Nematoide-das-Galhas Meloidogyne incognita (Est I2)RESUMO: Entre os fatores que limitam a produtividade do C. canephora na Amazônia Ocidental destaca-se a meloidogynose, causada por espécies do "Nematoide-das-Galhas", dentre as quais a mais importante e agressiva ao cafeeiro é M. incognita. O objetivo desse trabalho foi caracterizar a resistência à M. incognita (Est I2) de 32 genótipos das variedades botânicas Conilon, Robusta e híbridos intervarietais provenientes do Banco de Germoplasma da Embrapa Rondônia. Os experimentos foram realizados em casa de vegetação com a inoculação de seis mudas para cada clone com 10 ml de suspensão contendo 5000 ovos de inóculo puro de M. incognita. Cento e cinquenta dias após a inoculação foram avaliados o peso fresco (PF), o número de galhas (NG), o número de ovos (NO) e o fator de reprodução do nematoide (FR= população final/população inicial). Em comparação com as testemunhas suscetíveis de café arábica e do tomateiro (FR=1,2 e 31,3, respectivamente), os clones da variedade botânica Conilon (694, 160, 837, 46, 909, 890), da variedade botânica Robusta (1111, 8152, 8192, 10141, 8152) e os materiais híbridos (844, 1005, 169, 54, 453, 120, 193, 636) reagiram como resistentes à M. incognita, apresentando FR<1 e reduzido número de galhas (NG médio = <10). Os clones identificados como resistentes foram integrados ao programa de melhoramento genético do cafeeiro visando o ...

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Section: Resultsmentioning

confidence: 99%

“…In the Robusta botanic variety there is the cultivar 'Apoatã', which due to its resistance to Meloidogyne spp. have served as an alternative in management of areas infested by the root-knot nematode (PAIVA et al, 2012).…”

Section: Evaluation Of Resistance Of C Canephora Genotypes To M Incmentioning

confidence: 99%

Characterization of resistance response of Coffea canephora genotypes to Meloiddogyne incognita (Est I2) root-knot nematode

Santos

Rocha

Silveira

et al. 2018

C.Sci.

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“…Genotypes of Conilon coffee exhibit countless differences, including polyclonal varieties (Fonseca et al, 2004), a group of clones that are generally grouped by maturation cycle: early, medium, late and very late (Partelli et al, 2014b). A physiologically viable cutting method has been developed, guaranteeing the maximum homogeneity of fields, particularly in grain maturation, among other desirable characteristics (Weigel and Jurgens, 2002;Paiva et al, 2012;Partelli et al, 2014a). Currently, the majority of commercial Conilon coffee is planted using seedlings propagated by cuttings.…”

Section: Introductionmentioning

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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“…Therefore, commercial propagation of the species has been done by cuttings, which overcomes the variability caused by seed propagation. Cutting-propagation is physiologically viable and ensures maximum crop homogeneity, besides other desirable traits, especially grain maturation, fruit yield and size, and plant vigor (Weigel & Jurgens, 2002;Paiva et al, 2012). Moreover, this technique has allowed the establishment of coffee crops in areas with biotic or abiotic limitations (Miranda et al, 2011;Paiva et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Root system distribution and yield of 'Conilon' coffee propagated by seeds or cuttings

Partelli

Covre

Oliveira

et al. 2014

Pesq. agropec. bras.

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-The objective of this work was to evaluate the root system distribution and the yield of 'Conilon' coffee (Coffea canephora) propagated by seeds or cuttings. The experiment was carried out with 2x1 m spacing, in an Oxisol with sandy clay loam texture. A randomized complete block design was used, following a 2x9x6 factorial arrangement, with two propagation methods (seeds and cuttings), nine sampling spacings (0.15, 0.30, 0.45, 0.60, 0.75, and 0.90 m between rows, and 0.15, 0.30, and 0.45 between plants within rows), six soil depths (0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.50, and 0.50-0.60 m), and six replicates. Soil cores (27 cm 3 ) with roots were taken from 12 experimental units, 146 months after planting. The surface area of the root system and root diameter, length, and volume were assessed for 13 years and, then, correlated with grain yield. The highest fine root concentration occurred at the superficial soil layers. The variables used to characterize the root system did not differ between propagation methods. Moreover, no differences were observed for net photosynthetic CO 2 assimilation rate, stomatal conductance, internal CO 2 concentrations, and instantaneous water-use efficiency in the leaves. Cutting-propagated plants were more productive than seed-propagated ones.Index terms: Coffea canephora, root diameter, root length, root volume, vegetative propagation. Distribuição do sistema radicular e produtividade do café 'Conilon' propagado por sementes ou estaquiaResumo -O objetivo deste trabalho foi avaliar a produtividade e a distribuição do sistema radicular do café 'Conilon' (Coffea canephora) propagado por sementes ou estaquia. O experimento foi realizado no espaçamento 2x1 m, em Latossolo com textura franco-argilo-arenosa. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo fatorial 2x9x6, com dois métodos de propagação (semente e estaca), nove espaçamentos (0,15, 0,30, 0,45, 0,60, 0,75 e 0,90 m, nas entrelinhas, e 0,15, 0,30 e 0,45 entre plantas), seis profundidades (0,20, 0,30, 0,40, 0,,50 e 0,50-0,60 m) e seis repetições. Foram retirados monólitos (27 cm 3 ) de solo com raízes de 12 unidades experimentais, 146 meses após o plantio. A área superficial do sistema radicular bem como o diâmetro, o comprimento e o volume das raízes foram avaliados por 13 anos e correlacionados à produtividade de grãos. A maior concentração de raízes mais finas ocorreu nas camadas superficiais do solo. As variáveis utilizadas para caracterizar o sistema radicular não diferiram entre os métodos de propagação. Além disso, não se observaram diferenças quanto à taxa de assimilação fotossintética líquida de CO 2 , nem quanto à condutância estomática, às concentrações internas de CO 2 e à eficiência do uso da água nas folhas. Plantas propagadas por estaquia foram mais produtivas do que as propagadas por sementes.Termos para indexação: Coffea canephora, diâmetro de raízes, comprimento de raízes, volume de raízes, propagação vegetativa.

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Comportamento de cultivares de cafeeiros C. Arabica L. enxertados sobre cultivar 'Apoatã IAC 2258' (Coffea canephora)

Cited by 10 publications

References 11 publications

Characterization of resistance response of Coffea canephora genotypes to Meloiddogyne incognita (Est I2) root-knot nematode

Characterization of resistance response of Coffea canephora genotypes to Meloiddogyne incognita (Est I2) root-knot nematode

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

Root system distribution and yield of 'Conilon' coffee propagated by seeds or cuttings

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