Comportamento de genótipos RB de cana-de-açúcar ao parasitismo dos nematoides das galhas

Silva, Matheus Silva e; Bandeira, Moara Alexandrino; Maranhão, Sandra Roberta Vaz Lira; Carvalho, Rezanio Martins; Pedrosa, Elvira M. R.

doi:10.5039/agraria.v11i2a5368

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…The damage caused by nematodes varies according to the population level, soil type, and crop variety (SILVA et al, 2016;BELLÉ et al, 2017;NORONHA et al, 2017;MARANHÃO et al, 2018). When at a high population density, nematodes cause severe damage to the root system, which becomes underdeveloped and inefficient, leading to decreased productivities (SILVA et al, 2017;PORTO et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Morphological and Morphometric Characterization of Pratylenchus Species in Sugarcane Cropping Areas of Pernambuco State

et al. 2020

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The root-lesion nematodes Pratylenchus spp. have a wide geographic distribution and a large number of host plants. These migratory endoparasites are found associated with sugarcane around the world causing diseases that induce permanent losses in productivity. Although this genus has ordinarily been reported in low-producing sugarcane areas in northeastern Brazil, studies of the species occurrence are few and restricted to a very low number of sites and samples. This study aimed to morphologically and morphometrically characterize Pratylenchus species from different sugarcane regions of Pernambuco state, where composite samples of soil and roots were collected on 30 farms from three sugarcane mills. The external morphological characters of the nematode body from different populations had a diagnostic value compatible with those obtained in the literature, showing the dominance of P. zeae (87%) in the region. Atypical populations of the genus Pratylenchus were also found.

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Section: Introductionmentioning

confidence: 99%

Morphological and Morphometric Characterization of Pratylenchus Species in Sugarcane Cropping Areas of Pernambuco State

et al. 2020

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“…The sandy soils, with high temperatures and low levels of organic matter increases the effect of water deficit on plant stress and therefore intensify the damage of the plant-parasitic nematodes (Omarjee et al 2008;Kimenju et al 2009). The use of a sugarcane genotypes susceptible to nematodes (Chaves et al 2007;Silva et al 2012;Silva et al 2016) also contributes to the dominance of Meloidogyne and Pratylenchus, although the ectoparasites Helicotylenchus and Criconemella are found in the fields, but in low levels (Cardoso et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…Meloidogyne incognita (Kofoid & White) Chitwood, M. javanica (Treub) Chitwood and Pratylenchus zeae, Graham are the most adundant, causing significant damage to the crop (Chaves et al 2002;Rodrigues et al 2011;Mbega and Nzogela 2012;Silva et al 2016). Nematodes from the genera Criconemella De Grisse and Loof, Helicotylenchus Steiner, Paratrichodorus Siddiqi, and Trichodorus Cobb, comprise a Section Editor: Sarah J. Pethybridge second nematode group in northeastern sugarcane fields, but not recognized as important pathogens (Chaves et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Nematode abundance and diversity in sugarcane fields in Brazil

Maranhão

Pedrosa

Guimarães

et al. 2018

Trop. plant pathol.

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Edaphic climatic conditions directly affect the population dynamics of nematode assemblages and management strategies. The objective of this study was to characterize spatiotemporal changes in nematode abundance and diversity in sugarcane fields of northeastern Brazil under different edaphic climatic conditions. Soil samples from seven geoenvironmental sites under continuous cultivation were taken at planting and 4, 9, and 14 months after planting. Nematode abundance and diversity varied with the soil's physical and chemical characteristics. Sites in the rainfed and irrigated coastal tables as well the floodplain had higher number of nematodes in contrast to the flat-land and hillside. The abundance of plant-parasitic nematodes increased concurrently with crop development, but the number of taxa decreased. Meloidogyne and Pratylenchus were the dominant plant-parasitic genera across locations, but bacterivores were dominant in southern sites at field replanting. Heat map delineated two distinct groups of nematode distribution within the geoenvironmental zones, rather than the sampling times. Pratylenchus density was high in both groups, but in contrast with Meloidogyne and Criconemella, the abundance of Pratylenchus and Helicotylenchus was higher in sites with lower soil bulk density and higher porosity, clay, organic matter, and water contents as those in the southern sites, reflecting edaphic climatic conditions.

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“…As galhas nas raízes das plantas se configuram como uma das doenças de planta de manejo mais dificultado, especialmente em sistemas agroecológicos de produção, uma vez que, nematoides são veiculados pelo solo e, nesse ambiente, o controle de fitopatógenos é mais difícil (20). Assim, inúmeras alternativas aplicadas ao manejo sustentável desses fitoparasitas, têm sido desenvolvidas e, dentre elas, a adição de matéria orgânica oriunda de resíduos vegetais triturados e que apresentam capacidade nematicida (10,24,26).…”

Section: Materiais Vegetais Aplicados Ao Manejo Agroecológico De Melounclassified

Materiais vegetais aplicados ao manejo agroecológico de Meloidogyne incognita em tomateiro

Melo

Serra

2019

Summa phytopathol.

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RESUMO O objetivo deste trabalho foi avaliar o efeito de folhas frescas trituradas de leucena, mandioca e mamona, aplicados como adubação de cobertura, no controle de M. incognita em tomateiro e, no desenvolvimento destas plantas em condição de casa-de-vegetação. Os materiais foram aplicados na superfície do solo 30 dias após a germinação das sementes e, após 10 dias, o substrato de cultivo das plantas foi infestado. Plantas cultivadas em solo não infestado serviram para a avaliação do efeito dos materiais sobre o desenvolvimento dos tomateiros. Em ambos os ensaios, foram aplicadas 0, 10, 20, 30 e 40 g de folhas frescas trituradas de leucena, mamona e mandioca por Kg de solo, em tratamentos independentes. A avaliação ocorreu 45 dias após a aplicação dos materiais vegetais. Nos tratamentos onde o solo foi infestado os materiais vegetais incrementaram a massa fresca da raiz e da parte aérea dos tomateiros e inibiram a reprodução do patógeno. Houve diminuição do número de ovos, redução do fator de reprodução, índice de galhas e índice de massas de ovos de M. incognita nas plantas dos tratamentos que apresentaram material vegetal, independente da concentração utilizada. Os materiais incrementaram o desenvolvimento das plantas, sendo esse incremento mais pronunciado, quando estas foram cultivadas na presença da leucena, em todas as concentrações do vegetal utilizadas. Tais resultados apontam para o potencial desses materiais vegetais, no controle sustentável do nematoide das galhas em tomateiro.

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Comportamento de genótipos RB de cana-de-açúcar ao parasitismo dos nematoides das galhas

Cited by 7 publications

References 14 publications

Morphological and Morphometric Characterization of Pratylenchus Species in Sugarcane Cropping Areas of Pernambuco State

Morphological and Morphometric Characterization of Pratylenchus Species in Sugarcane Cropping Areas of Pernambuco State

Nematode abundance and diversity in sugarcane fields in Brazil

Materiais vegetais aplicados ao manejo agroecológico de Meloidogyne incognita em tomateiro

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