Estudo anatômico de cafeeiros enxertados

Dias, Fábio Pereira; Castro, Daniel Melo de; Mendes, Antônio Nazareno Guimarães; Vallone, Haroldo Silva; Carvalho, Alex Mendonça de; Carvalho, Gladyston Rodrigues

doi:10.1590/s1413-70542009000300011

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…1i). This may affect the normal plant development, since the delayed recovery of vascular tissues may affect other factors such as the translocation of water and nutrients from the rootstock to the graft and from the canopy to the rootstock (DIAS et al, 2009).…”

Section: Resultsmentioning

confidence: 99%

HISTOLOGICAL ANALYSIS AND PERFORMANCE OF SOUR PASSION FRUIT POPULATIONS UNDER DIFFERENT ROOTSTOCKS RESISTANT TO Fusarium spp

et al. 2018

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The present study aimed to describe histological traits of the graft welding process and evaluate the effect of rootstocks on the physical and chemical traits and the productivity of sour passion fruit populations. The experiment was arranged in a randomized block design, in a 4x2 + 4 factorial scheme (cultivars / canopy x rootstocks), three replicates and nine plants per plot. Commercial cultivars and populations and Passiflora alata and P. nitida rootstocks, in addition to ungrafted plants were used as canopy. Cleft grafting was the grafting type adopted. Traits analyzed such as productivity and physical and chemical quality of fruits were submitted to analysis of variance and compared by the Tukey test. The canopy morphology was evaluated according to descriptors of the Ministry of Agriculture, Livestock and Supply. Grafting was carried out for each graft/rootstock combination for histological analysis. Sections were obtained by freehand cuts, stained and mounted on semi-permanent slides, examined under optical microscope and photomicrographed. Rootstocks affected the early cultivation and reduced productivity and number of fruits of passion fruit populations. Grafting did not affect the quality of fruits or the canopy morphology. Considering the complete culture cycle, P. alata species is able to be used as rootstock. The anatomical study demonstrates the occurrence of better compatibility in the connection of P. edulis tissues on P. alata, compared to grafting on P. nitida.Análise histológica e desempenho de populações de maracujazeiro-azedo sob diferentes porta-enxertos resistentes ao fusarium spp Resumo -O objetivo do presente trabalho foi descrever as características histológicas do processo de soldadura da enxertia e avaliar a influencia dos porta enxertos sobre as características físicas e químicas do fruto e na produtividade de populações de maracujazeiro azedo. O delineamento utilizado foi o de blocos ao acaso, num esquema fatorial 4x2+4 (cultivares/copas x porta enxertos), com três repetições e nove plantas por parcela. Foram utilizadas como copa cultivares comerciais e populações e os porta enxertos Passiflora alata e P. nitida, além do pé-franco. O tipo de enxertia foi o convencional por garfagem no topo em fenda cheia. As características analisadas como produtividade e qualidade físico química dos frutos foram submetidas à análise de variância e comparadas pelo teste de Tukey. E a morfologia da copa foi avaliada de acordo com descritores do MAPA. Foi realizada a técnica de enxertia de cada combinação enxerto/porta enxerto para a analise histológica, onde as secções foram obtidas à cortes a mão livre, coradas e montadas em lâminas semipermanente e analisadas sob microscópio óptico e fotomicrografadas. Os portas enxertos influenciaram no período inicial de cultivo reduzindo a produtividade e o número de frutos das populações de maracujazeiro, e a enxertia não influenciou na qualidade dos frutos e na morfologia da copa. Considerando o ciclo completo da cultura, a espécie P. alata possui condições de ...

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Section: Resultsmentioning

confidence: 99%

HISTOLOGICAL ANALYSIS AND PERFORMANCE OF SOUR PASSION FRUIT POPULATIONS UNDER DIFFERENT ROOTSTOCKS RESISTANT TO Fusarium spp

et al. 2018

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Coffea arabica rootstock resistant to Meloidogyne paranaensis nematodes

et al. 2022

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Meloidogyne paranaensis is a species of root‐knot nematode that affects coffee (Coffea arabica L.) tree growth by causing severe damages to the plant root. This study evaluated the agronomic performance of Coffea arabica progenies in an M. paranaensis‐infested field and assessed the compatibility of resistant C. arabica genotype 28‐I‐4 (GEN28) as rootstock for susceptible cultivars. Experiment 1: under field conditions, six progenies were analyzed; the controls were ‘IPR100’ as resistant and ‘Catuaí Vermelho IAC 144’ (CtV144) as susceptible. Experiment 2: under greenhouse conditions, combinations of grafts and rootstocks between susceptible CtV144 and GEN28 were evaluated regarding their resistance to M. paranaensis alongside their noninoculated counterparts. For this, M. paranaensis reproduction factor (RF), total population of the nematode per gram of root system, growth parameters, gas exchange, and water potential (ψpd) were evaluated. In Experiment 1, resistant C. arabica progenies were more vigorous, productive, and showed a population of M. paranaensis threefold‐times lower than that observed in roots of susceptible CtV144. Among the resistant progenies selected in the field experiment, GEN28 was chosen for physiological compatibility study with the traditional cultivar CtV144. In Experiment 2, the CtV144 grafted onto GEN28 led to resistance to M. paranaensis, as well as a higher leaf area and ψpd as compared with nongrafted CtV144. Therefore, the GEN28 holds suitable characteristics to be used as a new Coffea arabica rootstock applied to production of resistant seedlings to Meloidogyne paranaensis nematodes. This technology represents an alternative to keep up coffee activity in infested areas.

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Desenvolvimento vegetativo de plantas de café arábica enxertadas sobre café robusta e submetidas à reposição hídrica

Miranda

Guimarães

Magalhães

et al. 2011

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o crescimento de plantas de café arábica (Coffea arabica) enxertadas sobre café robusta (C. canephora), submetidas a diferentes níveis de reposição de água. O experimento foi realizado em Lavras, MG, em delineamento experimental de blocos ao acaso, em arranjo fatorial 2x2x5, com quatro repetições. Foram feitas avaliações em: duas cultivares de C. arabica -Catuaí IAC-99 e Topázio MG-1190 -, dois tipos de plantas -pé-franco e enxertadas sobre C. canephora 'Apoatã IAC-2258' -e cinco níveis de reposição de água -testemunha sem irrigação e quatro coeficientes de cultura, nos valores 0,2, 0,3, 0,4 e 0,5, do plantio até 24 meses, e 0,4, 0,6, 0,8 e 1,0, de 24 a 29 meses -. Utilizou-se turno de rega fixo, com irrigações às terças e às sextas-feiras. Foram avaliados: altura de plantas, diâmetro de copa e diâmetro de caule. Cafeeiros enxertados têm menor crescimento em comparação aos de pé-franco, no período de implantação da lavoura. A substituição do sistema radicular de C. arabica por C. canephora não altera a resposta das plantas à irrigação.Termos para indexação: Coffea arabica, Coffea canephora, deficiência hídrica, economia de água, enxertia, irrigação. Vegetative development of arabica coffee plants grafted onto robusta coffee, subjected to water replacementAbstract -The objective of this work was to evaluate the vegetative growth of Arabica coffee (Coffea arabica) plants grafted onto robusta coffee (C. canephora), subjected to different levels of water replacement. The experiment was carried out in Lavras, MG, Brazil, in a complete randomized block design, with a 2x2x5 factorial arrangement and four replicates. Evaluations were done for: two cultivars of C. arabica -Catuaí IAC-99 and Topázio MG-1190 -, two types of plants -ungrafted and grafted onto C. canephora 'Apoatã IAC-2258' -, and five levels of water replacement -the control without irrigation, and four crop coefficients with values of 0.2, 0.3, 0.4, and 0.5 from planting to 24 months, and of 0.4, 0.6, 0.8, and 1.0 from 24 to 29 months -. A fixed watering shift was used, with irrigations on Tuesdays and on Fridays. Plant height, and crown and stem diameters were evaluated. Grafted trees have lower growth compared to the ungrafted ones, during the establishment of the crop. The replacement of the root system of C. arabica by C. canephora does not alter the response of plants to irrigation.Index terms: Coffea arabica, Coffea canephora, water deficit, water economy, grafting, irrigation. IntroduçãoA enxertia é uma técnica bastante difundida na cultura do cafeeiro, como forma de viabilizar seu cultivo em áreas que apresentam limitações bióticas ou abióticas ao bom desenvolvimento do sistema radicular.A maioria das pesquisas tem priorizado o uso de Coffea canephora Pierre ex A. Froehner como porta-enxerto, pela maior tolerância a nematoides, em comparação a cultivares de C. arabica L. (Dias et al., 2009). A enxertia visa o aproveitamento do sistema radicular mais desenvolvido de C. canephora para obtenção de alta pr...

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Estudo anatômico de cafeeiros enxertados

Cited by 5 publications

References 4 publications

HISTOLOGICAL ANALYSIS AND PERFORMANCE OF SOUR PASSION FRUIT POPULATIONS UNDER DIFFERENT ROOTSTOCKS RESISTANT TO Fusarium spp

HISTOLOGICAL ANALYSIS AND PERFORMANCE OF SOUR PASSION FRUIT POPULATIONS UNDER DIFFERENT ROOTSTOCKS RESISTANT TO Fusarium spp

Coffea arabica rootstock resistant to Meloidogyne paranaensis nematodes

Desenvolvimento vegetativo de plantas de café arábica enxertadas sobre café robusta e submetidas à reposição hídrica

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