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Levantamento de nematoides fitoparasitas em áreas de produção de plantas ornamentais e reação de crisântemos aos nematoides das galhas

Authors: Gonçalves, Lucivane Aparecida;

Levantamento de nematoides fitoparasitas em áreas de produção de plantas ornamentais e reação de crisântemos aos nematoides das galhas

Abstract

Problemas causados por fitonematoides em áreas de cultivo de plantas ornamentais têm se tornado bastante frequentes. Os nematoides causadores de galhas (Meloidogyne spp.), os das lesões radiculares (Pratylenchus spp.) e os da parte aérea (Aphelenchoides spp.) podem ser considerados os mais nocivos ao cultivo de plantas ornamentais. Com o objetivo de verificar quais os nematoides fitoparasitos presentes em áreas de produção de plantas ornamentais de corte, o presente trabalho foi desenvolvido. Para isso, amostragens foram coletadas em áreas de cultivo de ornamentais de corte na Empresa Steltenpool em Paranapanema – Holambra II – SP, em casas de vegetação de crisântemo, lisianthus e gérbera. As amostras foram processadas para a extração, quantificação e identificação dos nematoides presentes na raiz, no solo e parte aérea. Meloidogyne javanica foi o nematoide mais frequente, presente nas raízes, em 45% das amostras e em 46% do solo. Pratylenchus foi encontrado com maior frequencia nas raízes (37%) do que no solo (9%), enquanto Paratylenchus sp. foi mais frequente no solo (22%) do que nas raízes (13%). Nematoides de parte aérea não foram detectados nas áreas amostradas. Também foi estudada a reação de variedades de crisântemos à Meloidogyne incognita, M. javanica e M. enterolobii, em condições de casa de vegetação. Tais estudos foram conduzidos separadamente para M. incognita, M. javanica e M. enterolobii. O substrato de cada parcela foi infestado com 5.000 ovos da espécie de nematoide em estudo (Pi) e após 60 dias após a infestação o sistema radicular das plantas foi determinado o número de massa de ovos e em seguida processado para a extração dos nematoides presentes (Pf) e determinado o fator de reprodução (Pf/PI) de cada nematoide estudado. No estudo de reação as variedades de crisântemo Capello Vermelho (5,3) e Sunny Shena (2,0) foram...

Nematodes problems in ornamental plants production areas have became quite frequent; in root-knot nematodes (Meloidogyne spp.), the root lesion nematodes (Pratylenchus spp.) and shoot nematodes (Aphelenchoides spp.) are considered the most harmful to ornamental plants cultivation. This research aimed to verify the plant- parasitic nematodes in cutting ornamental plants production. Samples were collected in chrysanthemum, lisianthus and gerbera greenhouses of the Company Steltenpool in Paranapanema - Holambra II – SP. The nematodes were extracted, quantificated and identificated from samples of root, soil and shoot. Meloidogyne javanica was the most frequent nematode in roots (45%), and in soil (46%), Pratylenchus was found more frequently in roots (37%) than in soil (9%), while Paratylenchus was more common in soil (22%) than in roots (13%). Nematodes were not detected from shoot samples. Chrysanthemums varieties reaction to M. incognita, M. javanica and M. enterolobii had been studied separately in greenhouse conditions. Each plot was infested with 5,000 eggs of which studied nematode species (Pi). The egg mass and nematodes numbers (Pf) present in the root system was determined 60 days after the soil infestation. The reproduction rates were determined by Pf/Pi. „Chrysanthemum Capello Red‟ (5.3) and „Sunny Shena‟ (2.0) were susceptible to Meloidogyne incognita. All chrysanthemum varieties were resistant to M. javanica and M. enterolobii

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Pós-graduação em Agronomia (Proteção de Plantas) - FCA

Country
Brazil
Keywords

Crisântemo, Lisianthus, Pratylenchus sp, Gerbera, Chrysanthemum-Ornamental, Nematóides em plantas, Meloidogyne spp

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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