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Problemas fitossanitários podem representar uma ameaça em diferentes cultivos. E, para isso, o primeiro passo é identificar e conhecer as principais doenças e seus impactos nos povoamentos florestais, como no cultivo da teca (Tectona grandis L.f). Atualmente, a ferrugem causada por Olivea neotectonae (T.S. Ramakrishnan & K. Ramakrishnan) é uma das principais doenças fúngicas que acometem a espécie. Objetivou-se com este trabalho realizar a caracterização do fungo O. neotectonae isolado de folhas de teca no estado do Tocantins, Brasil. Os urediniósporos de O. neotectonae foram coletados em folhas de teca infectados naturalmente, na cidade de Gurupi-TO. Foram testados três diferentes métodos, para verificar o que melhor proporcionasse obtenção de DNA com quantidade suficiente e qualidade adequada para a correta identificação do patógeno. O método que resultou em melhor quantidade e qualidade de DNA de isolados foi o descrito por Alessio e colaboradores. O DNA extraído foi submetido a amplificação da região ITS e sequenciados. A sequência de nucleotídeos de O. neotectonae compartilhou uma similaridade de cerca de 70% com sequências da região ITS de outros fungos depositados no GenBank, visto que até o momento não se encontra sequencias disponíveis da espécie O. neotectonae.
Evelynne Urzêdo Leão; Pedro Raymundo Argüelles Osorio; Dalmarcia De Souza Carlos Mourão; Gentil Cavalheiro Adorian; Gil Rodrigues Dos Santos. Extração de DNA e identificação molecular de Olivea neotectonae (T.S. Ramakrishnan & K. Ramakrishnan) isoladas de folhas de teca (Tecto-na grandis L.f). Journal of Biotechnology and Biodiversity 2021, 9, 222 -228.
AMA StyleEvelynne Urzêdo Leão, Pedro Raymundo Argüelles Osorio, Dalmarcia De Souza Carlos Mourão, Gentil Cavalheiro Adorian, Gil Rodrigues Dos Santos. Extração de DNA e identificação molecular de Olivea neotectonae (T.S. Ramakrishnan & K. Ramakrishnan) isoladas de folhas de teca (Tecto-na grandis L.f). Journal of Biotechnology and Biodiversity. 2021; 9 (2):222-228.
Chicago/Turabian StyleEvelynne Urzêdo Leão; Pedro Raymundo Argüelles Osorio; Dalmarcia De Souza Carlos Mourão; Gentil Cavalheiro Adorian; Gil Rodrigues Dos Santos. 2021. "Extração de DNA e identificação molecular de Olivea neotectonae (T.S. Ramakrishnan & K. Ramakrishnan) isoladas de folhas de teca (Tecto-na grandis L.f)." Journal of Biotechnology and Biodiversity 9, no. 2: 222-228.
The use of botanical fungicides has been presented as a promising tool to replace the use of synthetic compounds, as the former seems to offer reduced risks to the environment and human health. Here, we characterized the major constituents and evaluated the potential of essential oils of Noni, Morinda citrifolia L. plants for controlling stem-rot disease caused by the fungus Sclerotium rolfsii Catt in Neotropical rice, Oryza sativa L., fields. Using in silico molecular predictions and toxicological approaches, we further assessed the essential oil selectivity against beneficial organisms such as the fungi Trichoderma asperellum Samuels, Lieckfeldt & Nirenbeand the ladybeetles Eriopis connexa Germar and Coleomegilla maculata DeGeer. Our results revealed that octanoic acid (64.0 %), butanoic acid (10.2 %), and hexanoic acid (8.6 %) were the major oil components. When applied at 30 mg/mL, the essential oil inhibited mycelial growth, whereas at 10 mg/mL, it inhibited the germination of all S. rolfsii sclerotia. The essential oil application at 25 mg/mL reduced disease severity in both curative (56.4 %) and preventive (71.2 %) methods. Essential oil applications (30 mg/mL) did not affect the beneficial fungus T. asperellum nor did it kill any ladybeetle. Our molecular docking analyses reinforced the essential oil selectivity actions predicting higher potential interactions between its major components and the tyrosine-tRNA ligase of S. rolfsii compared to those of T. asperellum. Collectively, our findings demonstrated that Noni essential oil could control S. rolfsii infestations without causing any detrimental effects on relevant beneficial organisms, highlighting its potential as an alternative fungicide.
Pedro R.A. Osorio; Felipe R. Dias; Dalmarcia S.C. Mourão; Sabrina H.C. Araujo; Pedro F.S. Toledo; Ana Carolina F. Silva; Willie A.S. Viera; Marcos P.S. Câmara; Wellington S. Moura; Raimundo W.A. Aguiar; Eugênio E. Oliveira; Gil R. Santos. Essential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles. Industrial Crops and Products 2021, 170, 113728 .
AMA StylePedro R.A. Osorio, Felipe R. Dias, Dalmarcia S.C. Mourão, Sabrina H.C. Araujo, Pedro F.S. Toledo, Ana Carolina F. Silva, Willie A.S. Viera, Marcos P.S. Câmara, Wellington S. Moura, Raimundo W.A. Aguiar, Eugênio E. Oliveira, Gil R. Santos. Essential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles. Industrial Crops and Products. 2021; 170 ():113728.
Chicago/Turabian StylePedro R.A. Osorio; Felipe R. Dias; Dalmarcia S.C. Mourão; Sabrina H.C. Araujo; Pedro F.S. Toledo; Ana Carolina F. Silva; Willie A.S. Viera; Marcos P.S. Câmara; Wellington S. Moura; Raimundo W.A. Aguiar; Eugênio E. Oliveira; Gil R. Santos. 2021. "Essential oil of Noni, Morinda citrifolia L., fruits controls the rice stem-rot disease without detrimentally affect beneficial fungi and ladybeetles." Industrial Crops and Products 170, no. : 113728.
Recent agricultural expansion into regions of the Brazilian savannah or Cerrado has improved agricultural knowledge and management practices. Under this biome’s favorable conditions, the incidence of diseases such as gummy stem blight (GSB) could be a limiting factor for some crops (i.e., Cucumis melo L.), due to high losses in productivity and fruit quality. We conducted field experiments to assess the temporal progression of the incidence and severity of GSB disease in melon plants under five pesticide treatments and three growing seasons (dry, rainy, and transition periods). Furthermore, the susceptibility of six cultivars of melon to GSB was evaluated with and without pesticide application. In the dry season, although the incidence of the disease was high and dependent on the applied pesticides, its severity was low, allowing the crop cycle to be completed and marketable fruits to be harvested. However, in the rainy and transition periods, the high incidence and severity of the disease recorded in all plants, independent of the pesticides used, resulted in a premature end to the growth of the melon crops. Moreover, the commonly cultivated cultivar (Eldorado 300) showed a higher incidence and severity of the disease than the other potential cultivars. The results suggest that melon crops should be grown exclusively under the Brazilian Cerrado conditions during the dry season, dominated by favorable climatic conditions for the melon and unfavorable conditions to the pathogen. Other cultivars need to be investigated for their suitability to this region.
Gil Rodrigues dos Santos; P. H. Tschoeke; R. A. Sarmento; E. E. Oliveira; N. Rodrigues-Silva; M. S. Dalcin; K. Haddi; R. S. Silva. Impact of growing seasons and pesticides used on the occurrence and severity of the gummy stem blight in melon cultivation in Brazil. European Journal of Plant Pathology 2021, 1 -14.
AMA StyleGil Rodrigues dos Santos, P. H. Tschoeke, R. A. Sarmento, E. E. Oliveira, N. Rodrigues-Silva, M. S. Dalcin, K. Haddi, R. S. Silva. Impact of growing seasons and pesticides used on the occurrence and severity of the gummy stem blight in melon cultivation in Brazil. European Journal of Plant Pathology. 2021; ():1-14.
Chicago/Turabian StyleGil Rodrigues dos Santos; P. H. Tschoeke; R. A. Sarmento; E. E. Oliveira; N. Rodrigues-Silva; M. S. Dalcin; K. Haddi; R. S. Silva. 2021. "Impact of growing seasons and pesticides used on the occurrence and severity of the gummy stem blight in melon cultivation in Brazil." European Journal of Plant Pathology , no. : 1-14.
The objective of this work was to associate the use of biofilms to Lippia sidoides (Lippia) and Morinda citrifolia (Noni) essential oils and their respective major constituents in post-harvest quality components. The evaluations in this study were chromatographic analysis the essential oils, fruit mass reduction effect, total soluble solids, peel color and fruit firmness. Regarding the adjustment and viability of the essential oil concentrations to be used in the treatments, a phytotoxicity test was performed. The main constituent found in Noni essential oil was octanoic acid, while for Lippia essential oil was thymol. The concentration of 3% of Noni and Lippia essential oils was the maximum to reach an acceptable level of phytotoxicity on papaya fruit peel. The paraffin + L. sidoides and paraffin + M. citrifolia treatments achieved the lowest reduction in pulp mass. In relation to total soluble solids, treatments did not show a significant difference. The best result for firmness was found in sunflower oil + noni coating. Sunflower oil + noni and sunflower oil + octanoic acid were the treatments that maintained normal yellow color in fruits for longer time.
Pedro Raymundo Argüelles Osorio; Priscila Fonseca Costa; Mateus Sunti Dalcin; Dalmarcia De Souza Carlos Mourão; Raimundo Wagner De Souza Aguiar; Gabriella Rayssa Antunes Da Silva Oliveira; David Ingsson Oliveira Andrade de Farias; Felipe Rocha Dias; Gil Rodrigues dos Santos. Medicinal plant essential oils associated with biofilm to protect papaya fruits. Food Science and Technology 2021, 41, 386 -392.
AMA StylePedro Raymundo Argüelles Osorio, Priscila Fonseca Costa, Mateus Sunti Dalcin, Dalmarcia De Souza Carlos Mourão, Raimundo Wagner De Souza Aguiar, Gabriella Rayssa Antunes Da Silva Oliveira, David Ingsson Oliveira Andrade de Farias, Felipe Rocha Dias, Gil Rodrigues dos Santos. Medicinal plant essential oils associated with biofilm to protect papaya fruits. Food Science and Technology. 2021; 41 (suppl 1):386-392.
Chicago/Turabian StylePedro Raymundo Argüelles Osorio; Priscila Fonseca Costa; Mateus Sunti Dalcin; Dalmarcia De Souza Carlos Mourão; Raimundo Wagner De Souza Aguiar; Gabriella Rayssa Antunes Da Silva Oliveira; David Ingsson Oliveira Andrade de Farias; Felipe Rocha Dias; Gil Rodrigues dos Santos. 2021. "Medicinal plant essential oils associated with biofilm to protect papaya fruits." Food Science and Technology 41, no. suppl 1: 386-392.
Cassava (Manihot esculenta Crantz) has significant socioeconomic relevance in Brazil and other developing countries, as one of the main sources of carbohydrates for human and animal consumption (De Oliviera et al., 2011). Among the cassava crop diseases, anthracnose is one of the main limiting factors for production and may be caused by species like Colletotrichum plurivorum, C. karstii, C. fructicola, and C. siamense (Bragança et al., 2016; Liu et al., 2019; Oliveira et al., 2016; Sangpueak; Phansak; Buensanteai, 2018). Severity in the field is variable, depending on the resistance of the variety used and is also highly influenced by the climate, being the most severe disease under high humidity and high temperature. Under these conditions, it can cause losses of up to 100%. In 2019, cassava leaves presenting dark brown necrotic injuries of different sizes and irregular borders—typical anthracnose symptoms— were collected from commercial plantations in the states of Pará and Tocantins, Brazil. Symptomatic tissue fragments were superficially disinfected, placed in plates with potato dextrose agar (PDA), and incubated under 25 ± 2 °C for seven days. In the 56 isolates used in the morphological identification, the colonies were white and gray at the top and dark gray in the bottom with sector formation. The conidia were hyaline, cylindrical, and aseptic, 10.04 to 17.83 μm long × 3.29 to 5.75 μm wide. These phenotypical characteristics were similar to those of C. gloeosporioides lato sensu species (Weir et al., 2012). Genomic DNA was extracted from two representative isolates (UFT/Coll69, collected in the municipality of Casa de Tábua-PA; UFT/Coll82, collected in Pau Darco-PA) and the APN2 / MAT-IGS, DNA lyase (Apn2), and glyceraldehyde-3-phosphate dehydrogenase-IGS (GAP2-IG) intergenic spacers were amplified and sequenced. The nucleotide sequences were deposited in the GenBank (accession numbers: MT409462, MT396231, MT759633, MT396239, MT396232, MT800846). The BLASTn (Basic Local Alignment Search Tool) showed a 99 to 100% similarity with Colletotrichum chrysophillum. The maximum likelihood phylogenetic analysis grouped the isolates in the C. chrysophillum clade, with a high bootstrap value (98%). Based on morphocultural characteristics and the phylogenetic analysis, the isolates associated with M. esculenta anthracnose were identified as C. chrysophillum, with a frequency of 6.67% among Colletotrichum colonies isolated from cassava leaves. The inoculation of three isolates was carried out in three plants, three leaves for each plant, by spraying spore solution with a concentration of 1×106 conidia / ml, without wounding the leaves and placed in a humid chamber at 25 ° C for ten days. Control plants were inoculated with sterile distilled water. From the 2nd day after inoculation, small irregular necrotic lesions appeared that increased in size over time, while control plants remained asymptomatic. Both were pathogenic and the symptoms caused after inoculation were similar to each other and to those observed in the field. In Brazil, anthracnose by C. chrysophillum was reported in cashew (Veloso et al., 2018) and banana trees (Vieira et al., 2017). To our knowledge, this is the first report of cassava anthracnose disease by C. chrysophillum.
Stella De Castro Santos Machado; Josiene Silva Veloso; Marcos Paz Saraiva Camara; Fabrício Souza Campos; Renato Almeida Sarmento; Marcos Vinícius Giongo; Gil R. dos Santos. First Report of Colletotrichum chrysophillum Causing Cassava Anthracnose in Brazil. Plant Disease 2021, 105, 1196 -1196.
AMA StyleStella De Castro Santos Machado, Josiene Silva Veloso, Marcos Paz Saraiva Camara, Fabrício Souza Campos, Renato Almeida Sarmento, Marcos Vinícius Giongo, Gil R. dos Santos. First Report of Colletotrichum chrysophillum Causing Cassava Anthracnose in Brazil. Plant Disease. 2021; 105 (4):1196-1196.
Chicago/Turabian StyleStella De Castro Santos Machado; Josiene Silva Veloso; Marcos Paz Saraiva Camara; Fabrício Souza Campos; Renato Almeida Sarmento; Marcos Vinícius Giongo; Gil R. dos Santos. 2021. "First Report of Colletotrichum chrysophillum Causing Cassava Anthracnose in Brazil." Plant Disease 105, no. 4: 1196-1196.
Brazil is the largest producer, consumer, and exporter of forage seeds in the world. However, the high incidence of pathogens threatens the seed production system, resulting in decreases in production and quality. Currently, the emphasis has been placed on the use of alternative products as a way of maintaining productivity and environmental sustainability. Thus, the objective of this study was to evaluate the mycoflora associated with the commercial seeds of Brachiaria brizantha and Panicum maximum treated with chemical and alternative fungicide. To test with chemical and alternative treatments, seeds were subjected to fluazinam + thiophanate‐methyl, fludioxonil + metalaxyl‐M, noni essential oil, rosemary pepper essential oil, sulfuric acid. There was also an untreated control. The most efficient products in the control of incident fungi were, in decreasing order, fluazinam + thiophanate‐methyl, fludioxonil + metalaxyl‐M, noni essential oil, rosemary pepper essential oil, and sulfuric acid. Fungicides mainly controlled the genera Alternaria, Aspergillus, Bipolaris, Chaetomium, Cladosporium, Colletotrichum, Curvularia, Fusarium, Penicillium, Phoma and Rhizopus. Essential oils showed positive effects in controlling Bipolaris, Curvularia, and Fusarium. Sulfuric acid reduced the incidence of Bipolaris, Colletotrichum, Curvularia, Fusarium, Phoma, and Rhizopus. Seed treatment is one of the promising strategies for obtaining seeds of a healthy quality. As a result, the fungicides and botanical components listed above were promising in reducing fungi associated with forage seeds and can be used for seed treatments and in the development of new products with a natural base through essential oils.
Patrícia R. R. dos Santos; Marcos Vinicius G. Alves; Gil R. dos Santos. Botanical and chemical fungicides in the treatment of commercial seeds of Brachiaria brizantha and Panicum maximum. Journal of Basic Microbiology 2021, 61, 459 -471.
AMA StylePatrícia R. R. dos Santos, Marcos Vinicius G. Alves, Gil R. dos Santos. Botanical and chemical fungicides in the treatment of commercial seeds of Brachiaria brizantha and Panicum maximum. Journal of Basic Microbiology. 2021; 61 (5):459-471.
Chicago/Turabian StylePatrícia R. R. dos Santos; Marcos Vinicius G. Alves; Gil R. dos Santos. 2021. "Botanical and chemical fungicides in the treatment of commercial seeds of Brachiaria brizantha and Panicum maximum." Journal of Basic Microbiology 61, no. 5: 459-471.
Tropical and subtropical fruit production plays an important role in the country’s economic scenario and has been affected by root-knot nematode. The jaboticaba tree is a plant widely cultivated in Brazil, and among the problems of the crop is the root-knot nematode of the genus Meloidogyne. This study aimed to evaluate the hostability of jaboticaba tree cv. ‘Sabará’, in different inoculum concentrations of Meloidogyne incognita and Meloidogyne javanica. The inoculum used in the experiment was obtained from the roots of tomato cv. ‘Santa Cruz’. Jaboticaba trees were subjected to inoculation with concentrations of 0, 2000, 4000, and 8000 eggs + juvenile plant-1, for both species of nematodes. The plants of jaboticaba cv. ‘Sabará’ showed resistance concerning the development of M. incognita and M. javanica root-knot nematode with Reproduction Factor (RF) <1.
Mônica Lau Silva Marques; Jéssica Maria Israel de Jesus; Marcos Fernandes Oliveira; Renato Andrade Texeira; Patrícia Resplandes Rocha dos Santos; Gil Rodrigues dos Santos; Mara Rúbia da Rocha. Reaction of jaboticaba trees cv. ‘Sabará’ to the species of gall forming nematodes. Summa Phytopathologica 2020, 46, 342 -344.
AMA StyleMônica Lau Silva Marques, Jéssica Maria Israel de Jesus, Marcos Fernandes Oliveira, Renato Andrade Texeira, Patrícia Resplandes Rocha dos Santos, Gil Rodrigues dos Santos, Mara Rúbia da Rocha. Reaction of jaboticaba trees cv. ‘Sabará’ to the species of gall forming nematodes. Summa Phytopathologica. 2020; 46 (4):342-344.
Chicago/Turabian StyleMônica Lau Silva Marques; Jéssica Maria Israel de Jesus; Marcos Fernandes Oliveira; Renato Andrade Texeira; Patrícia Resplandes Rocha dos Santos; Gil Rodrigues dos Santos; Mara Rúbia da Rocha. 2020. "Reaction of jaboticaba trees cv. ‘Sabará’ to the species of gall forming nematodes." Summa Phytopathologica 46, no. 4: 342-344.
Probiotic yeasts are sources of food additives producing propionic acid (PA). Here, using metabolic data from p3 under a controlled aeration system was developed a mathematical model to estimate α and β values by Luedeking-Piret equation. Maximum specific formation rate of PA, volumetric productivity of PA and maximum yield coefficient of product were demonstrated in microaerobic system. The formation rates of product (rp) were kinetically associated with the biomass formation rates (rx) and the concentrations of dry weight cell (DWC). The α value was of 0.450639 (mmol·l−1 PA·g−1 DWC) and 0.64479 (mmol·l−1 PA·g−1 DWC), and β value of 0.000243 (mmol·l−1 PA·h−1) and 0.00138 (mmol·l−1 PA·h−1), in aerobic and microaerobic systems, respectively. Therefore, here, was possible to simulate the DWC and PA production and to describe that the PA production followed a semi-growth-associated model.
Alex Sander R. Cangussu; Pedro A. Cruz; Raimundo W. Souza Aguiar; Gil R. Santos; Fabricio S. Campos; Eliane M. Sobrinho; Igor V. Brandi; Kelvinson F. Viana; Paulo A. Nogueira; Frederico J.V. Passos; Celia A. Moraes; Gilzeane S.S. Prazeres; Wendel B. da Silveira; Flávia Maria Lopes Passos. Prediction of fermentative parameters from mathematical modeling using thermotolerant probiotic yeast. Bioresource Technology Reports 2020, 11, 100522 .
AMA StyleAlex Sander R. Cangussu, Pedro A. Cruz, Raimundo W. Souza Aguiar, Gil R. Santos, Fabricio S. Campos, Eliane M. Sobrinho, Igor V. Brandi, Kelvinson F. Viana, Paulo A. Nogueira, Frederico J.V. Passos, Celia A. Moraes, Gilzeane S.S. Prazeres, Wendel B. da Silveira, Flávia Maria Lopes Passos. Prediction of fermentative parameters from mathematical modeling using thermotolerant probiotic yeast. Bioresource Technology Reports. 2020; 11 ():100522.
Chicago/Turabian StyleAlex Sander R. Cangussu; Pedro A. Cruz; Raimundo W. Souza Aguiar; Gil R. Santos; Fabricio S. Campos; Eliane M. Sobrinho; Igor V. Brandi; Kelvinson F. Viana; Paulo A. Nogueira; Frederico J.V. Passos; Celia A. Moraes; Gilzeane S.S. Prazeres; Wendel B. da Silveira; Flávia Maria Lopes Passos. 2020. "Prediction of fermentative parameters from mathematical modeling using thermotolerant probiotic yeast." Bioresource Technology Reports 11, no. : 100522.
A cultura do milho e feijão é destaque no Brasil e Tocantins. Entretanto, doenças tem influenciado na perda de produtividade dessas cultivares. Logo, o presente estudo objetivou, fazer um levantamento das plantas medicinais do cerrado tocantinense e avaliar o potencial fungitóxico de óleos essenciais destas plantas, com vistas ao controle alternativo de fitopatógenos em milho e feijão caupi. Foram registradas e selecionadas 20 espécies de plantas utilizadas na medicina popular no Município de Peixe, TO. O fungo isolado do milho foi o B. maydis e do feijão caupi o fungo R. solani, ambos cultivados em meio BDA (Batata, Dextrose, Ágar), a 25 ± 2ºC em fotoperíodo de 12 horas, sob luz fluorescente. As espécies promissoras na produção de óleo foram, Buriti (M. flexuosa), Copaíba (C. langsdorfii Desf), Eucalipto (E. globulus), Sucupira branca (P. emargitatus), e Pequi (C. brasilense). Os bioensaios in vitro com os óleos essenciais foram montados em triplicatas nas concentrações (1.250, 2.500, 5.000, 10.000 e 50.000 µg mL-1) e as placas foram incubadas a 25°C e avaliadas por 10 dias. Água destilada esterilizada foi usada como testemunha absoluta. Para o patógeno do feijão, não houve inibição in vitro. O óleo de copaíba nas concentrações 5.000, 10.000 e 50.000 µL mL-1 mostraram-se eficientes no controle da doença em plantas de milho quando aplicado de forma preventiva, sendo menor que a testemunha relativa. Portanto, o óleo deve ser utilizado contra outros fitopatógenos, a fim de observar a sua eficiência no controle de outras doenças
Alessandra Macedo Barros; Talita Pereira De Souza Ferreira; Dalmarcia De Souza Carlos Mourão; Raimundo Wagner De Souza Aguiar; Gil Rodrigues Dos Santos. Levantamento e uso de plantas medicinais do cerrado tocantinense para o controle alternativo de fitopatógenos. Journal of Biotechnology and Biodiversity 2019, 7, 336 -346.
AMA StyleAlessandra Macedo Barros, Talita Pereira De Souza Ferreira, Dalmarcia De Souza Carlos Mourão, Raimundo Wagner De Souza Aguiar, Gil Rodrigues Dos Santos. Levantamento e uso de plantas medicinais do cerrado tocantinense para o controle alternativo de fitopatógenos. Journal of Biotechnology and Biodiversity. 2019; 7 (3):336-346.
Chicago/Turabian StyleAlessandra Macedo Barros; Talita Pereira De Souza Ferreira; Dalmarcia De Souza Carlos Mourão; Raimundo Wagner De Souza Aguiar; Gil Rodrigues Dos Santos. 2019. "Levantamento e uso de plantas medicinais do cerrado tocantinense para o controle alternativo de fitopatógenos." Journal of Biotechnology and Biodiversity 7, no. 3: 336-346.
As fitoalexinas podem ser induzidas por agentes bióticos e abióticos conhecidos como eliciadores. Neste trabalho, objetivou-se avaliar o potencial do óleo essencial de Cymbopogon citratus Stapf., do fungo Trichoderma sp. e de leveduras na indução de fitoalexinas em mesocótilos de sorgo (Sorghum bicolor (L.) Moench) e cotilédones de soja (Glycine max L.). As leveduras Sacharomyces cerevisiae, Sacharomyces boulardii e o fungo Trichoderma sp. foram testados nas concentrações 0,5; 5; 25; 50; 75 e 100%. O óleo de Cymbopogon citratus Stapf. nas concentrações de 625, 1250, 2500, 5000 e 7500 µg/mL. O produto comercial acorda® foi utilizado como testemunha positiva para os testes em soja e o Biozyme® para sorgo. Água destilada esterilizada foi testemunha negativa para os testes em ambas as culturas. As duas metodologias de indução de resistência em sorgo diferiram-se no seguinte: na primeira os mesocótilos foram excisados 0,5 cm acima do nó escutelar e colocados em tubos, contendo 1 mL da amostra a ser testada. Na segunda as plântulas receberam aspersão de 2 mL das amostras a serem testadas em diferentes concentrações. Todas as substâncias avaliadas promoveram o acúmulo de fitoalexinas em soja e sorgo. O tratamento com o óleo foi o mais eficiente, porém, no caso do sorgo, as altas concentrações de óleo provocaram inibição no crescimento da plântula. A segunda metodologia de indução de resistência em sorgo gerou melhores resultados que a primeira devido ao grande acúmulo de fitoalexinas e à possibilidade de observação da reação da plântula a cada tratamento.
Micaele Rodrigues De Souza; Laiza Priscila Dos Santos; Alessandra Macedo Barros; Gil Rodrigues Dos Santos; Gleys Kellen Aquino Moraes; Luana Fernandes Ferraz; Valeria Bastos De Araújo; Talita Pereira De Souza Ferreira. Indução de fitoalexinas por preparações de leveduras, Trichoderma e óleo essencial de Cymbopogon citratus Stapf. Journal of Biotechnology and Biodiversity 2019, 7, 325 -335.
AMA StyleMicaele Rodrigues De Souza, Laiza Priscila Dos Santos, Alessandra Macedo Barros, Gil Rodrigues Dos Santos, Gleys Kellen Aquino Moraes, Luana Fernandes Ferraz, Valeria Bastos De Araújo, Talita Pereira De Souza Ferreira. Indução de fitoalexinas por preparações de leveduras, Trichoderma e óleo essencial de Cymbopogon citratus Stapf. Journal of Biotechnology and Biodiversity. 2019; 7 (3):325-335.
Chicago/Turabian StyleMicaele Rodrigues De Souza; Laiza Priscila Dos Santos; Alessandra Macedo Barros; Gil Rodrigues Dos Santos; Gleys Kellen Aquino Moraes; Luana Fernandes Ferraz; Valeria Bastos De Araújo; Talita Pereira De Souza Ferreira. 2019. "Indução de fitoalexinas por preparações de leveduras, Trichoderma e óleo essencial de Cymbopogon citratus Stapf." Journal of Biotechnology and Biodiversity 7, no. 3: 325-335.
The use of plant essential oils has been adopted as less hazardous to the environment and human health than synthetic insecticides used for the control of insects that transmit diseases. Despite of exerting insecticidal activities against several insect disease vectors, the potential impacts on non-target organisms exerted by essential oils extracted from Lippia sidoides (Cham.) have not received adequate attention. Here, we evaluated the susceptibility and potential changes in consumption rates of honey bees, Apis mellifera (L.), when exposed to essential oils extracted from L. sidoides. Was exposed forager bees to honey syrup (50% v/v) containing L. sidoides essential oil for 5 h. After this exposure period, the bees received regular honey syrup for another 19 h period. Six essential oil concentrations was used, namely 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5 µL of essential oil/mL of syrup, and evaluated the syrup consumption and bees mortality in both periods (at the 5th and 24th h). The results reveal that independent of the essential oil concentration, the forager bees fed significantly less on L. sidoides essential oil-containing honey syrup. However, feeding on L. sidoides essential oil-containing honey syrup did not cause significant mortality when compared with bees that were not exposed to the essential oils. Thus, the results demonstrate that L. sidoides essential oils exhibited adequate selectivity against honey bees.
Izabella M. C. Pinheiro; João Henrique S. Luz; Luis Flávio N. Souza; Ana Cláudia Oliveira; Eugênio E. Oliveira; Raimundo Wagner Aguiar; Gil Santos; Talita P. Ferreira; Marcela Cristina Silveira-Tschoeke; Paulo Henrique Tschoeke. Effects of Lippia sidoides Cham. (Verbenaceae) essential oils on the honey bees, Apis mellifera (Apidae: Hymenoptera), foraging. Revista de Ciencias Agrícolas 2019, 36, 31 -41.
AMA StyleIzabella M. C. Pinheiro, João Henrique S. Luz, Luis Flávio N. Souza, Ana Cláudia Oliveira, Eugênio E. Oliveira, Raimundo Wagner Aguiar, Gil Santos, Talita P. Ferreira, Marcela Cristina Silveira-Tschoeke, Paulo Henrique Tschoeke. Effects of Lippia sidoides Cham. (Verbenaceae) essential oils on the honey bees, Apis mellifera (Apidae: Hymenoptera), foraging. Revista de Ciencias Agrícolas. 2019; 36 (E):31-41.
Chicago/Turabian StyleIzabella M. C. Pinheiro; João Henrique S. Luz; Luis Flávio N. Souza; Ana Cláudia Oliveira; Eugênio E. Oliveira; Raimundo Wagner Aguiar; Gil Santos; Talita P. Ferreira; Marcela Cristina Silveira-Tschoeke; Paulo Henrique Tschoeke. 2019. "Effects of Lippia sidoides Cham. (Verbenaceae) essential oils on the honey bees, Apis mellifera (Apidae: Hymenoptera), foraging." Revista de Ciencias Agrícolas 36, no. E: 31-41.
A umidade do material combustível é um fator importante para o conhecimento do comportamento do fogo. Por isso esse trabalho a finalidade de estimar a umidade do material combustível através da modelagem de variáveis meteorológicas em uma área de Cerrado localizada na cidade de Gurupi, sul do estado do Tocantins. Os dados meteorológicos em campo foram obtidos através de uma miniestação, que fornecia umidade relativa do ar, temperatura e velocidade do vento, permanecendo ligada durante todo o período de experimento, que ocorreu durante 7 meses, com um total de 10 coletas, em dias esporádicos. O material combustível foi coletado de 5 em 5 minutos, em um recipiente plástico, e pesado em uma balança com precisão de 0,01g e após isso armazenado em sacos de papel com identificação. As amostras foram secadas em estufas durante 72 horas a uma temperatura de 75ºC, e novamente pesadas para obter o peso do material seco.
Micael Moreira Santos; Thatyana Santiago Martins; Damiana Beatriz Silva; Jader Nunes Cachoeira; Gil Rodriques Santos; Marcos Giongo. Modelagem para estimativa de carga e umidade do material combustível em área de Cerrado. Journal of Biotechnology and Biodiversity 2019, 7, 249 -256.
AMA StyleMicael Moreira Santos, Thatyana Santiago Martins, Damiana Beatriz Silva, Jader Nunes Cachoeira, Gil Rodriques Santos, Marcos Giongo. Modelagem para estimativa de carga e umidade do material combustível em área de Cerrado. Journal of Biotechnology and Biodiversity. 2019; 7 (1):249-256.
Chicago/Turabian StyleMicael Moreira Santos; Thatyana Santiago Martins; Damiana Beatriz Silva; Jader Nunes Cachoeira; Gil Rodriques Santos; Marcos Giongo. 2019. "Modelagem para estimativa de carga e umidade do material combustível em área de Cerrado." Journal of Biotechnology and Biodiversity 7, no. 1: 249-256.
The savanna cashew (Anacardium humile A. St. Hil.) nut is a native shrub species distributed in the savanna biome of Central Western Brazil. This species is similar to the cashew (Anacardium occidentale L.) nut, and its edible pseudo-fruits have been used for various purposes. However, A. humile is at risk of extinction. One reason for this is the phytosanitary issues. Therefore, phytosanitary studies of the serious plant diseases caused by fungal pathogens are necessary. The aim of this study was to survey the savanna cashew nut (Anacardium humile) in Central Western Brazil from August 2013 to October 2014. Serious damage caused by anthracnose to the plant’s leaves and fruits was consistently detected. The pathogen fungal species was Colletotrichum gloeosporioides. It was identified by morphological characteristics and molecular analyses. Additional experiments showed evidence that C. gloeosporioides can be transmitted by cashew seeds. We observed anthracnose symptoms on the surfaces of the floral peduncle, leaves, and peduncle of the A. humile cashew nuts. The genomic DNA sequences of the selected strains for molecular characterization have had 99% identity with the analogous sequences of C. gloeosporioides. Naturally occurring C. gloeosporioides infection of the leaves of A. humile was low (20.3%) compared with that of the nuts (79.7%). Our results can be used to design strategies to prevent the introduction and establishment of C. gloeosporioides in new areas. They can also be helpful in monitoring programs in areas with a current occurrence of C. gloeosporioides. Finally, these results can be used in future research plans of C. gloeosporioides infection management.
Gil Rodrigues dos Santos; Jaíza Francisca Ribeiro Chagas; Nilson Rodrigues-Silva; Renato Almeida Sarmento; Evelynne Urzêdo Leão; Ricardo Siqueira da Silva; Marcelo Coutinho Picanço. Detection of Colletotrichum gloeosporioides in native cashew species in Brazil. Brazilian Journal of Microbiology 2019, 50, 899 -903.
AMA StyleGil Rodrigues dos Santos, Jaíza Francisca Ribeiro Chagas, Nilson Rodrigues-Silva, Renato Almeida Sarmento, Evelynne Urzêdo Leão, Ricardo Siqueira da Silva, Marcelo Coutinho Picanço. Detection of Colletotrichum gloeosporioides in native cashew species in Brazil. Brazilian Journal of Microbiology. 2019; 50 (4):899-903.
Chicago/Turabian StyleGil Rodrigues dos Santos; Jaíza Francisca Ribeiro Chagas; Nilson Rodrigues-Silva; Renato Almeida Sarmento; Evelynne Urzêdo Leão; Ricardo Siqueira da Silva; Marcelo Coutinho Picanço. 2019. "Detection of Colletotrichum gloeosporioides in native cashew species in Brazil." Brazilian Journal of Microbiology 50, no. 4: 899-903.
Existem poucos estudos relacionados ao impacto de queimadas sobre os fungos habitantes do solo presente no cerrado. Objetivou-se com este trabalho identifcar a micoflora presente em amostras de solos, antes e após o processo de queimada em duas profundidades, observando a interferência deste processo na população de fungos habitantes do solo. As amostras foram coletadas em uma área, no município de Jaú do Tocantins, Estado do Tocantins. Foram instalados bioensaios em delineamento experimental inteiramente casualizado, com quatro repetições e cinco tratamentos, representados por diferentes concentrações de solução do solo. A identifcação dos fungos foi feita, em nível de gênero, de acordo com suas estruturas morfológicas formadas em meio de cultura, através de observações em microscópio ótico. Na área antes da queimada, observou-se a presença de maior diversidade de gêneros e quantidade de colônias fúngicas. O contrário foi constatado na área posteriormente submetida à queimada, que apresentou menor número de colônias fúngicas. Dos gêneros identifcados, destacaram-se Aspergillus, Penicillium, Cladosporium, Fusarium, Mucor, Pythium e Trichoderma, que apresentaram maior número de colônias em quantidades representativas. Observou-se ainda uma redução em torno de 45% na população de fungos antagonistas. Foi possível constatar que o uso do fogo na vegetação influenciou negativamente as populações microbianas presentes nas camadas mais sup
Rosângela Ribeiro De Sousa; Evelynne Urzêdo Leão; Ronice Alves Veloso; Marcos Giongo; Gil Rodrigues Dos Santos. Impacto da queima de vegetação do Cerrado sobre fungos habitantes do solo. Ciência Florestal 2019, 29, 965 .
AMA StyleRosângela Ribeiro De Sousa, Evelynne Urzêdo Leão, Ronice Alves Veloso, Marcos Giongo, Gil Rodrigues Dos Santos. Impacto da queima de vegetação do Cerrado sobre fungos habitantes do solo. Ciência Florestal. 2019; 29 (2):965.
Chicago/Turabian StyleRosângela Ribeiro De Sousa; Evelynne Urzêdo Leão; Ronice Alves Veloso; Marcos Giongo; Gil Rodrigues Dos Santos. 2019. "Impacto da queima de vegetação do Cerrado sobre fungos habitantes do solo." Ciência Florestal 29, no. 2: 965.
Fumonisins are mycotoxins (MTs) produced mainly by the fungus Fusarium verticillioides, the main pathogens of maize which cause ear rot. The aim of this work was to evaluate some factors that may lead to high fumonisin production by F. verticillioides in maize grains, correlating the pathogen inoculation method with different genotypes grown in four Brazilian states. Experiments were conducted in 2015–2016 in maize crops from experimental maize fields located in four distinct states of Brazil. Results showed that contamination by fumonisin mycotoxins occurred even on symptomatic or asymptomatic grains. In all municipalities, the samples showed levels of fumonisin B1 that were higher than would be tolerable for the human consumption of corn products (the current tolerance limit for fumonisin is 1.5 μg g−1). High severity of grains infected with F. verticillioides does not always show high concentrations of fumonisins. Environments with higher temperatures may influence the production of high concentrations of fumonisin in maize hybrids. Spray inoculation methods and inoculation at the center of spikes did not influence fumonisin concentrations. Results showed that the hybrids P3630H, P32R48 and P3250 presented higher disease severity, as well as higher mycotoxin levels in the studied locations with higher temperatures.
Oelton Rosa Junior; Mateus Dalcin; Vitor Nascimento; Fernando Haesbaert; Talita Ferreira; Rodrigo Fidelis; Renato Sarmento; Raimundo Aguiar; Eugenio Oliveira; Gil Santos. Fumonisin Production by Fusarium verticillioides in Maize Genotypes Cultivated in Different Environments. Toxins 2019, 11, 215 .
AMA StyleOelton Rosa Junior, Mateus Dalcin, Vitor Nascimento, Fernando Haesbaert, Talita Ferreira, Rodrigo Fidelis, Renato Sarmento, Raimundo Aguiar, Eugenio Oliveira, Gil Santos. Fumonisin Production by Fusarium verticillioides in Maize Genotypes Cultivated in Different Environments. Toxins. 2019; 11 (4):215.
Chicago/Turabian StyleOelton Rosa Junior; Mateus Dalcin; Vitor Nascimento; Fernando Haesbaert; Talita Ferreira; Rodrigo Fidelis; Renato Sarmento; Raimundo Aguiar; Eugenio Oliveira; Gil Santos. 2019. "Fumonisin Production by Fusarium verticillioides in Maize Genotypes Cultivated in Different Environments." Toxins 11, no. 4: 215.
Rust, caused by the biotrophic fungus Olivea neotectonae, stands out as an important disease in teak plantations in Brazil. Considering the current importance of this rust and the need to obtain additional basic information about its causal agent to better disease management, the present study aimed to analyze the morphology of O. neotectonae using light microscopy and demonstrate the infection process in teak leaves using scanning electron microscopy techniques (SEM). The morphological characteristics observed using light microscopy were similar to those described in the literature for this species. SEM revealed that the infection structures of the pathogen penetrated the teak leaf through the stomata complex. This study provides the first microscopic evidence of the infection process of Olivea neotectonae in leaves of teak plants.
Pedro Raymundo Argüelles Osorio; Evelynne Urzêdo Leão; Talita Pereira De Souza Ferreira; Marcos Vinicius Giongo Alves; Renato De Almeida Sarmento; Gil Rodrigues Dos Santos. Morphology and infection process of Olivea neotectonae in teak leaves. Arquivos do Instituto Biológico 2019, 86, 1 .
AMA StylePedro Raymundo Argüelles Osorio, Evelynne Urzêdo Leão, Talita Pereira De Souza Ferreira, Marcos Vinicius Giongo Alves, Renato De Almeida Sarmento, Gil Rodrigues Dos Santos. Morphology and infection process of Olivea neotectonae in teak leaves. Arquivos do Instituto Biológico. 2019; 86 ():1.
Chicago/Turabian StylePedro Raymundo Argüelles Osorio; Evelynne Urzêdo Leão; Talita Pereira De Souza Ferreira; Marcos Vinicius Giongo Alves; Renato De Almeida Sarmento; Gil Rodrigues Dos Santos. 2019. "Morphology and infection process of Olivea neotectonae in teak leaves." Arquivos do Instituto Biológico 86, no. : 1.
Weeds compete with agricultural crops for water, light, nutrients and space, besides having an extensive seed bank. However, another aspect to be considered relates to few studies pointing out weeds as hosts of phytopathogenic fungi. Many fungi, the main cause of diseases in plants, are known to use seeds as an efficient means of survival and dispersal. The objective of this work was to evaluate the health of weed seeds and the pathogenicity of fungi associated to plants of agricultural importance. The seeds were collected manually in Cerrado areas located in the municipality of Gurupi, Tocatins, Brazil. The blotter test method was used to evaluate seed health. The incidence of fungi was evaluated through an individual analysis of seeds using a stereoscopic and an optical microscope. The pathogenicity of fungi from weed seeds was evaluated by inoculation in plants of agronomic interest and, when pathogenic, we inoculated them in the host plant of the fungus. Weed seeds have been identified in fungi of the genus Alternaria, Aspergillus, Bipolaris, Cladosporium, Curvularia, Fusarium, Nigrospora, Papularia, Rhizopus and Pythium. The seeds of Acanthospermum australe, Bidens pilosa, Cenchrus echinatus, Digitaria horizontalis, Echinochloa crus-pavonis, Eleusine indica, Ipomoea sp., Pennisetum setosum, Sida rhombifolia, Spermacoce latifolia, Tridax procumbens and Vernonia polyanthes carry and disseminate fungi that, once inoculated, cause infection in plants of agricultural importance, such as Oryza sativa, Phaseolus vulgaris, Vigna unguiculata, Zea mays and Glycine max.
Emerson Flores De Oliveira; Patricia Resplandes Rocha Dos Santos; Gil Rodrigues Dos Santos. Seeds of weeds as an alternative host of phytopathogens. Arquivos do Instituto Biológico 2018, 85, 1 .
AMA StyleEmerson Flores De Oliveira, Patricia Resplandes Rocha Dos Santos, Gil Rodrigues Dos Santos. Seeds of weeds as an alternative host of phytopathogens. Arquivos do Instituto Biológico. 2018; 85 ():1.
Chicago/Turabian StyleEmerson Flores De Oliveira; Patricia Resplandes Rocha Dos Santos; Gil Rodrigues Dos Santos. 2018. "Seeds of weeds as an alternative host of phytopathogens." Arquivos do Instituto Biológico 85, no. : 1.
A produção de mudas de teca é realizada principalmente por sementes, que é um importante veículo de transmissão de diversos patógenos. Objetivou-se com este trabalho identificar e quantificar os fungos associados às sementes de teca, a patogenicidade desses microrganismos às mudas e a transmissibilidade semente-plântula. Para o teste de sanidade foram utilizadas sementes coletadas em Tocantins e outras adquiridas nos estados do Goiás (GO) e São Paulo (SP). Os tratamentos utilizados foram sementes desinfestadas e não desinfestadas, e sementes com e sem mesocarpo. O ensaio foi conduzido utilizando o método do papel de filtro (Blotter test). Para o teste de patogenicidade em mudas, foram utilizados os isolados de Fusarium sp., Botryodiplodia sp., Alternaria sp. e Plenodomus sp. Para a avaliação da transmissão de fungos via semente-plântula foram utilizadas sementes de cada local. Foram identificados os seguintes gêneros de fungos nas sementes: Fusarium, Trichoderma, Botryodiplodia, Aspergillus, Penicillium, Rhizopus, Cladosporium, Alternaria e Plenodomus. Foi observada maior ocorrência de fungos nas sementes provenientes dos estados de GO e SP. Fusarium foi o gênero fúngico com maior incidência nas sementes dos três estados. Apenas os gêneros Fusarium e Botryodiplodia foram patogênicos às mudas de teca. Houve baixa transmissibilidade semente-plântula, sendo que apenas o gênero fitopatogênico Fusarium foi transmitido.
Nathana Izabela Silva Sales; Evelynne Urzêdo Leão; Marcos Giongo; Gil Rodrigues Dos Santos. PATOGENICIDADE E TRANSMISSÃO DE FUNGOS ASSOCIADOS ÀS SEMENTES DE Tectona grandis L.f. Ciência Florestal 2018, 28, 970 -978.
AMA StyleNathana Izabela Silva Sales, Evelynne Urzêdo Leão, Marcos Giongo, Gil Rodrigues Dos Santos. PATOGENICIDADE E TRANSMISSÃO DE FUNGOS ASSOCIADOS ÀS SEMENTES DE Tectona grandis L.f. Ciência Florestal. 2018; 28 (3):970-978.
Chicago/Turabian StyleNathana Izabela Silva Sales; Evelynne Urzêdo Leão; Marcos Giongo; Gil Rodrigues Dos Santos. 2018. "PATOGENICIDADE E TRANSMISSÃO DE FUNGOS ASSOCIADOS ÀS SEMENTES DE Tectona grandis L.f." Ciência Florestal 28, no. 3: 970-978.
The fungal genus Curvularia is associated with a number of diseases in plants, commonly producing foliar spots in forage grasses. The objective of this study was to characterize the morphological and molecular diversity of the isolates of Curvularia sp. associated with Andropogon seeds, and to assess both their capacity to transmit disease and the pathogenicity of this fungus to crop. Ten isolates of Curvularia sp. were sourced from Andropogon seeds from agricultural producing regions in the Brazilian states Tocantins and Pará. Morphological characterization was achieved by observing fungus colonies and conidia and molecular characterization by DNA extraction and amplification with sequence-specific primers. The disease transmission was evaluated from seed sowing, in which after 40 days typical symptoms of Curvularia sp. were observed. Pathogenicity was evaluated by inoculating conidial suspension into the leaves of healthy plants, and after ten days, inspecting for pathogenic symptoms. Based on morphological and molecular features, the pathogen associated with Andropogon seeds was identified as Curvularia lunata, which, as such, is transmitted through the Andropogon plants via its seeds and is pathogenic to this species of forage grass.
Patrícia Resplandes Rocha Dos Santos; Evelynne Urzedo Leao; Raimundo Wagner De Souza Aguiar; Maruzanete Pereira De Melo; Gil Rodrigues Dos Santos. Morphological and molecular characterization of Curvularia lunata pathogenic to andropogon grass. Bragantia 2018, 77, 326 -332.
AMA StylePatrícia Resplandes Rocha Dos Santos, Evelynne Urzedo Leao, Raimundo Wagner De Souza Aguiar, Maruzanete Pereira De Melo, Gil Rodrigues Dos Santos. Morphological and molecular characterization of Curvularia lunata pathogenic to andropogon grass. Bragantia. 2018; 77 (2):326-332.
Chicago/Turabian StylePatrícia Resplandes Rocha Dos Santos; Evelynne Urzedo Leao; Raimundo Wagner De Souza Aguiar; Maruzanete Pereira De Melo; Gil Rodrigues Dos Santos. 2018. "Morphological and molecular characterization of Curvularia lunata pathogenic to andropogon grass." Bragantia 77, no. 2: 326-332.
Este trabalho objetivou identificar genótipos semelhantes quanto à características agronômicas e fenológicas para a formação de uma mistura varietal. O experimento foi realizado no campus de Gurupi, Universidade Federal do Tocantins. O delineamento utilizado foi o inteiramente casualizado (DIC) com três repetições. Os tratamentos consistiram de 37 genótipos de arroz irrigado. As características avaliadas foram germinação, floração, altura da planta, peso das panículas, comprimento das panículas, peso de 100 grãos, forma do grão, classe do grão, presença da arista e cor das glumelas. Os resultados foram submetidos à análise de variância e as médias avaliadas pelo teste de agrupamento de Scott-Knott, ao nível de 5 % de probabilidade e análise multivariada. Evidenciou-se diferença significativa para a maioria das características estudadas, indicando variabilidade entre os genótipos. O genótipo Irri 344 chegou a floração aos 74 dias após o plantio, seguido dos cultivares Javaé e Irga 417 com 79 dias. O genótipo Eloni e o Mutante Multiespigueta da Embrapa foram os que apresentaram o ciclo mais tardio. Os genótipos com maior altura foram: Tetep com 131,3 cm e o Basmati com 128,3 cm. Para a classe do grão a maioria dos genótipos foi classificada como longo fino. Na análise multivariada houve a formação de 7 grupos. A floração foi à característica que mais influenciou na determinação dos grupos, exceto para o grupo 1 composto pelos genótipos Tetep e Basmati, que se distanciaram também em relação à altura. Os genótipos CNAI 5287, CNAI 9930 e Irri 344 não foram incluídos em nenhuma dos grupos, sendo a característica classe de grãos que determinou a maior dissimilaridade em relação aos demais grupos. Palavras-chave: Oryza sativa, descritores morfológicos, brusone, mistura de cultivares.
Jaiza Francisca Ribeiro Chagas; Gil Rodrigues Dos Santos; Matheus Vinicius Abadia Ventura. Caracterização Agronômica E Fenológica De Genótipos De Arroz Irrigado Para Determinação De Mistura Varietal. Cientí[email protected] - Multidisciplinary Journal 2018, 5, 1 .
AMA StyleJaiza Francisca Ribeiro Chagas, Gil Rodrigues Dos Santos, Matheus Vinicius Abadia Ventura. Caracterização Agronômica E Fenológica De Genótipos De Arroz Irrigado Para Determinação De Mistura Varietal. Cientí[email protected] - Multidisciplinary Journal. 2018; 5 (2):1.
Chicago/Turabian StyleJaiza Francisca Ribeiro Chagas; Gil Rodrigues Dos Santos; Matheus Vinicius Abadia Ventura. 2018. "Caracterização Agronômica E Fenológica De Genótipos De Arroz Irrigado Para Determinação De Mistura Varietal." Cientí[email protected] - Multidisciplinary Journal 5, no. 2: 1.