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| Shigueoka,Luciana Harumi; Dorigo,Orazília França; Arita,Lucas Yuuki; Fonseca,Inês Cristina de Batista; Silva,Santino Aleandro da; Sera,Gustavo Hiroshi; Machado,Andressa Cristina Zamboni. |
| ABSTRACT: Meloidogyne species are widely distributed in coffee growing areas in Brazil, where M. paranaensis is responsible to significant losses to the crop. One of the main management strategies is the use of resistant cultivars, such as Apoatã rootstock and cultivars IPR 100 and IPR 106. However, the parasitic relationship between coffee and M. paranaensis in cultivars carrying resistance genes has been poorly understood. The objective of this paper was to characterize the resistance response of Coffea arabica cv. IPR 106 to M. paranaensis. For this, penetration and histopathological studies were carried out using root tissues parasitized by the nematode. ‘IPR 106’ and ‘Mundo Novo’ (susceptible cultivar) seedlings were inoculated with 4,000 eggs of M.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Management; Root-knot nematodes; Giant cells. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500434 |
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| Machado,Andressa Cristina Zamboni; Zagatto,Maurício Rumenos Guidetti; Skora Neto,Francisco; Silva,Santino Aleandro da; Zanão Júnior,Luiz Antonio. |
| ABSTRACT The analysis of nematode communities allows inferring consequences of management practices on the soil food web. We studied the taxonomic structure of nematode communities in preserved areas of the Atlantic forest (native forest = NF) in Ponta Grossa, Paraná State, Brazil, and in three different agroecosystems in neighboring areas to assess the effect of agricultural land use on nematode assemblages. Agroecosystems were located in a red latosol cropped during 30 years under conventional tillage (CT), no-tillage (NT), and minimal tillage (MT). We collected ten composite soil samples in each area in the summer. Nematodes were extracted by Baermann funnel and fixed with formalin. Subsequently, individuals were classified into taxonomic groups and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance; Diversity; Taxonomic structure; Soil indicators. |
| Ano: 2022 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162022000100701 |
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| Mello,Alexandre Furtado Silveira; Machado,Andressa Cristina Zamboni; Bedendo,Ivan Paulo. |
| Control of anthracnose in green pepper involves the use of resistant varieties and/or fungicides. The selection of varieties and efficient products demands great amounts of conidia as inoculum. It is thus necessary to optimize the production of Colletotrichum gloeosporioides conidia in the laboratory, establishing the best conditions for fungus development. The present study aimed at determining the most favorable culture media, temperature, and light conditions for the production of fungus inoculum. The fungus was isolated from green pepper fruits (Capsicum annuum L.) and transferred to four culture media (PDA, oat, filtered pepper extract, and autoclaved pepper extract), under different temperatures (15, 20, 25, 30, and 35ºC) and light conditions (24h... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Anthracnose; Mycelium growth; Sporulation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500013 |
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| Noronha,Marissônia de Araujo; Muniz,Maria de Fátima Silva; Cruz,Marcelo de Menezes; Assunção,Mayara Castro; Castro,José Mauro da Cunha e; Oliveira,Ellen Rebecca Lopes de; Miranda,Camila Gonçalves dos Santos; Machado,Andressa Cristina Zamboni. |
| ABSTRACT: The objective of this study was to accomplish a survey on populations of Meloidogyne and Pratylenchus species in sugarcane farming areas in the state of Alagoas, Brazil. Twenty samples of soil and roots were processed to extract and quantify nematodes; however, the identification of Meloidogyne species was performed using only 12 samples. Pratylenchus spp. were reported at moderate population levels of 68-1556 specimens 50g-1 of roots and 2-298 specimens 100cm-3 of soil in twenty analyzed samples. For Meloidogyne spp., these values were of 12-487 specimens 50g-1 of roots and 0-140 specimens 100cm-3 of soil. Based on electrophoresis of esterase isozymes, M. incognita was reported to be the most frequent species, followed by M. javanica and M.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Field survey; Plant-parasitic nematodes; Saccharum spp. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200151 |
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