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      Avaliação dos danos causados a Coffea arabica por uma população de Pratylenchus coffeae não patogênica a cafeeiro Translated title: Evaluation of damage caused on Coffea arabica by a population of Pratylenchus coffeae considered non-pathogenic on coffee

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          Abstract

          Dois experimentos em casa de vegetação foram realizados com o objetivo de se avaliar os danos causados ao cafeeiro (Coffea arabica) pela população M2 de Pratylenchus coffeae, supostamente não patogênica a cafeeiros. Pelo experimento 1, com cafeeiro 'Catuaí Vermelho' em estágio de dois pares de folhas e utilizando as densidades iniciais de 0, 333, 1.000, 3.000 e 9.000 nematoides por planta, foi demonstrado que a população M2 causa danos a cafeeiros jovens, apesar de não ser capaz de se reproduzir em suas raízes. No experimento 2, mantendo a cultivar e as densidades populacionais do nematoide, mas com plantas em estágio de seis pares de folhas, evidenciou-se que M2 não é capaz de causar danos. Portanto, comprovou-se que M2 é uma população de P. coffeae não patogênica a cafeeiro arábico, por não se reproduzir em tal hospedeiro, mas que, em plantas jovens, provavelmente causa danos durante a primeira geração.

          Translated abstract

          Two greenhouse experiments were carried out in order to evaluate the damage caused on Arabica coffee (Coffea arabica) by an M2 population of Pratylenchus coffeae, apparently non-pathogenic to coffee. Experiment 1, with 'Catuaí Vermelho' coffee at stage of two leaf pairs and with the initial nematode densities (Pi) of 0; 333; 1,000; 3.000; and 9,000 per plant, demonstrated that M2 can damage young coffee plants, although it is unable to reproduce on coffee roots. Experiment 2, with the same coffee cultivar and nematode densities, but with plants at stage of six leaf pairs, showed that the M2 population was unable to cause damage. Therefore, it was established that M2 is a population of P. coffeae without reproduction on Arabica coffee, which causes damage only in the first generation on young coffee below stages of six leaf pairs.

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          A rapid centrifugal-floration technibique for separating nematodes from soil.

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            Nomenclature and concepts of pathogenicity and virulence.

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              Laboratory methods for work with plant and soil nematodes

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                tpp
                Tropical Plant Pathology
                Trop. plant pathol.
                Sociedade Brasileira de Fitopatologia (Brasília )
                1983-2052
                December 2009
                : 34
                : 6
                : 412-415
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                Article
                S1982-56762009000600008
                10.1590/S1982-56762009000600008
                f59b1027-b46f-4ee6-9e46-95ff3c7123c1

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1982-5676&lng=en
                Categories
                PLANT SCIENCES

                Plant science & Botany
                Aglaonema,densities,diversity,reproductive fitness,root penetration,virulence,densidades,diversidade,habilidade reprodutiva,penetração nas raízes,virulência

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