Incidência e severidade do vírus do endurecimento dos frutos em maracujazeiros enxertados em pé-franco

Abstract

RESUMO -O objetivo deste trabalho foi avaliar a incidência e a severidade do vírus do endurecimento dos frutos em maracujazeiro-amarelo enxertado e pé-franco. O experimento foi conduzido no município de Adamantina-SP, no período de abril de 2006 a junho de 2007, adotando-se o delineamento em blocos ao acaso, com quatro tratamentos e oito repetições. Foram avaliados três porta-enxertos: Passiflora edulis, P. alata e P. gibertii, e plantas de pé-franco. Utilizou-se como copa o maracujazeiro-amarelo (Passiflora edulis Sims). Avaliaram-se a porcentagem de plantas com sintomas de virose e a severidade dos sintomas. As primeiras plantas com sintomas de virose ocorreram aos 90 dias do plantio das mudas no campo, atingindo, aos 180 dias, 100% de plantas com virose em P. alata e P. gibertii, e 97,5% em P. edulis e pé-franco. Termos para indexação: maracujá-amarelo, Passifloraceae, virose. OCURRENCE AND SEVERITY OF MOSAIC VÍRUS ON PASSION FRUITABSTRACT -The aim of this work was to evaluate the percentage of plants with symptoms of Cowpea aphid-borne mosaic vírus (CABMV) and the severity of the symptoms, in yellow passionfruit (Passiflora edulis Sims) grafted and not grafted. The experiment was carried out in Adamantina, SP, Brazil, from April 2006 to June 2007, adopting the experimental design in randomized blocks with four treatments and eight replicates. The studied factors were three rootstocks: Passiflora edulis, P. alata and P. gibertii, and plants not grafted. It was used the yellow passion fruit (Passiflora edulis Sims) as graft. The variables evaluated were: percentage of plants with symptoms of CABMV and the severity of the symptoms. The first plants with symptoms of CABMV occurred 90 days after planting in the field, reaching 180 days after planting 100% of plants with CABMV in P. alata and P. gibertii and 97,5% in P. edulis and in not grafted plants.

Research Article Backcrossing in passion fruit: generation advance and selection of genotypes resistant to <i>Cowpea</i> <i>aphid-borne</i> <i>mosaic</i> <i>virus</i>

“…This could be due to various factors, such as the presence of vectors, but also as a function of the virus strain. Different from the results we found Cavichioli et al (2011) reported appearance of first symptoms after 90 days of evaluations and that at 180 days 97.5% of the P. edulis genotypes were symptomatic.…”

Economic Analysis of the Production of Yellow Passion Fruit in an Area With Virose Incidence and Fertilized With NPK

“…Miyake et al (2016) obtained a medium productivity of 43 ton ha -1 in area without the presence of virus infection. Cavichioli et al (2011) observed in the city of Adamantina-SP the percentage of plants with symptoms of viral infection and the severity of symptoms in three rootstocks: Passiflora edulis, P. alata, P. gibertii and ungrafted plants. It was used as crown the yellow passion fruit (Passiflora edulis).…”

“…The following viruses stand out (Passion fruit woodiness virus and Cowpea aphid borne mosaic virus), fungi (Fusarium solani and Fusarium oxysporum), bacteria (Xanthomonas axonopodis), nematodes (Meloidogyne spp.) and phytoplasms (Cavichioli et al, 2011;Cerqueira et al, 2014;Garcêz et al, 2015;Santos et al, 2017).…”

Adoção e difusão de cultivares de maracujá-azedo desenvolvidos pelo IAC no Brasil.

“…Essa doença tem sido destacada como uma das causas da grande redução da área cultivada com maracujazeiro em São Paulo, que já foi considerada o principal estado produtor no Brasil. Ela inviabiliza a produção, transformando a cultura como itinerante, anual e de caráter nômade (CAPANEMA; FREDO; MELETTI, 2016;CAVICHIOLI et al, 2011;DAMATTO;FUZITANI;NOMURA, 2014;MELETTI, 2011;NARITA et al, 2012;PERUCH;COLARICCIO;SCHROEDER, 2011).…”