Resistência genotípica e monitoramento da favorabilidade para ocorrência da ferrugem alaranjada da cana-de-açúcar

Araújo, Kelly Lana; Canteri, Marcelo Giovanetti; Gílio, Thiago Alexandre Santana; Neubauer, Rafael Altrão; Sanches, Paulo Bonfim; Sumida, Ciro Hideki; Giglioti, Éder Antônio

doi:10.1590/s0100-54052013000400007

Cited by 17 publications

(23 citation statements)

References 9 publications

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“…RB72454 and SP89-1115 were the most susceptible ones, confirming the observations of Barbasso et al (2010) and Araújo et al (2013). SP79-2233 was also susceptible, which is corroborated by Ovalle et al (2008), Chavarría et al (2009 and Garcés et al (2014), although its AUDPC and MS% were lower than that of RB72454 and SP89-1115 in our study.…”

Section: Natural Infection In the Fieldsupporting

confidence: 89%

“…Two others, RB835054 and RB935744, exhibited symptoms in some assessments with MS% always below 1 %. Similar results were obtained by Araújo et al (2013) in the municipality of Valparaiso, São Paulo state, and Klosowski et al (2015) in Paranavaí, Paraná state, Brazil.…”

Section: Natural Infection In the Fieldsupporting

confidence: 83%

“…Disease severity was determined on the +3 leaf (Araújo et al 2013) by estimating the percentage of leaf area affected by symptoms. Assessments were carried out biweekly by four experienced evaluators, beginning 3-4 months after planting (or harvesting, in the case of the ratoon) and continuing until symptom expression peaked in susceptible varieties.…”

Section: Natural Infection In the Fieldmentioning

confidence: 99%

“…Few data on orange rust resistance are available for the main varieties cultivated in Brazil (Araújo et al 2013;Klosowski et al 2015). Therefore, this study was conducted with the following objectives: 1) determine the orange rust resistance of important sugarcane varieties cultivated in Brazil under field conditions, and 2) evaluate and compare two different artificial inoculation methods for determining resistant reaction.…”

Section: Introductionmentioning

confidence: 99%

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Reaction of sugarcane varieties to orange rust (Puccinia kuehnii) and methods for rapid identification of resistant genotypes

Chapola

Hoffmann

Júnior

2016

Trop. plant pathol.

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Sugarcane orange rust was recently introduced into Brazil and its control is based on the use of resistant varieties. This study aimed to determine the reaction of Brazilian sugarcane varieties to the disease in the field and to compare artificial inoculation methods. Rust severity was assessed in 17 varieties at a 15-day interval. The maximum disease severity (MS%) and the area under the disease progress curve (AUDPC) were determined for each genotype. The artificial inoculation methods tested were: spraying of a spore suspension on 60-day-old plants in the greenhouse, or placing the spore suspension into the leaf whorl of 5-month-old fieldgrown plants. Nine out of the 17 varieties studied were resistant to the disease, including the most widely grown in new plantings, RB867515 and RB966928. Varieties RB72454, SP89-1115 and SP79-2233 were susceptible, while RB925211 and SP81-3250 were moderately susceptible. Varieties RB855156, RB92579 and SP83-2847 showed an intermediate reaction. Both inoculation methods correlated well with field results. Spray inoculation discriminates better the responses of the varieties and enables the evaluation of more disease variables. Leaf whorl inoculation allows the use of field-grown plants and generates results in a shorter time.

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Section: Natural Infection In the Fieldsupporting

confidence: 89%

Section: Natural Infection In the Fieldsupporting

confidence: 83%

Section: Natural Infection In the Fieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reaction of sugarcane varieties to orange rust (Puccinia kuehnii) and methods for rapid identification of resistant genotypes

Chapola

Hoffmann

Júnior

2016

Trop. plant pathol.

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“…The areas have been cultivated with sugarcane (Saccharum officinarum) since 1988, after conventional tillage, which consisted of subsoiling down to 0.50 m, two heavy disking, and of opening furrows 0.25 m deep. The fertilization was performed with 500 kg of NPK fertilizer (5% N, 25% P 2 O 5 , and 25% K 2 O), as recommended by Araújo et al (2013), with 350 kg applied in the planting line at 0.30-m depth, using a cultivator, and 150 kg broadcasted. The planted varieties were SP 801 842 and RB 835 089, with manual harvest after the burning of straw.…”

Section: Methodsmentioning

confidence: 99%

Tensile strength, friability, aggregation, and soil organic matter physical fractions of an Oxisol cultivated with sugarcane

Kunde

Lima

Silva

et al. 2018

Pesq. agropec. bras.

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-The objective of this work was to evaluate the tensile strength, friability, aggregation, and the physical fractions of soil organic matter of a Rhodic Hapludox cultivated with sugarcane (Saccharum officinarum). The treatments consisted of one, three, and five years of cultivation of sugarcane, in the state of Rio Grande do Sul, Brazil. As a reference, a native forest adjacent to the cultivation area, with soil and relief characteristics similar to those of the cultivation areas, was used. Deformed samples were collected at 0.00-0.05, 0.05-0.10, and 0.10-0.20-m soil depths, for the determination of the soil physical attributes and for the physical fractionation of particle-size and density of the organic matter. The physical attribute evaluations were able to detect changes in the structural quality of the Oxisol, which resulted from the sugarcane cultivation. In comparison with the native forest, the stability and tensile strength of the aggregates decreased with the time of sugarcane cultivation. Tensile strength increased with soil depth, proportionally to the reduction of total soil organic carbon content. Soil preparation and straw burning reduce the input of fresh organic matter into the soil and accelerate the decomposition of the labile organic matter compartment, with negative consequences to soil physical properties over time.Index terms: Saccharum officinarum, organic carbon, organic matter fractionation, soil physical quality. Resistência tênsil, friabilidade, agregação e frações físicas da matéria orgânica de um Latossolo Vermelho cultivado com cana-de-açúcarResumo -O objetivo deste trabalho foi avaliar a resistência tênsil, a friabilidade, a agregação e as frações físicas da matéria orgânica de um Latossolo Vermelho cultivado com cana-de-açúcar (Saccharum officinarum). Os tratamentos consistiram de um, três e cinco anos de cultivo de cana-de-açúcar, no Estado do Rio Grande do Sul. Como referência, utilizou-se uma mata nativa, adjacente à área de cultivo, com características de solo e relevo similares às das áreas de cultivo. Foram coletadas amostras deformadas à profundidade de 0,00-0,05, 0,05-0,10 e 0,10-0,20 m, para determinação dos atributos físicos do solo e para o fracionamento físico densimétrico e granulométrico da matéria orgânica. As avaliações dos atributos físicos foram capazes de detectar alterações da qualidade estrutural do Latossolo resultantes do cultivo de cana-de-açúcar. Em comparação à mata nativa, a estabilidade e a resistência tênsil dos agregados diminuíram com o tempo de cultivo da cana-de-açúcar. A resistência tênsil aumentou com a profundidade no solo, proporcionalmente à redução dos teores de carbono orgânico total. O preparo do solo e a queima da palhada reduzem o aporte de matéria orgânica fresca ao solo e aceleram a decomposição do compartimento lábil da matéria orgânica, com consequências negativas às propriedades físicas do solo ao longo do tempo.Termos para indexação: Saccharum officinarum, carbono orgânico, fracionamento da matéria orgânica, qualidade físi...

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A process-based model to simulate sugarcane orange rust severity from weather data in Southern Brazil

et al. 2021

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Resistência genotípica e monitoramento da favorabilidade para ocorrência da ferrugem alaranjada da cana-de-açúcar

Cited by 17 publications

References 9 publications

Reaction of sugarcane varieties to orange rust (Puccinia kuehnii) and methods for rapid identification of resistant genotypes

Reaction of sugarcane varieties to orange rust (Puccinia kuehnii) and methods for rapid identification of resistant genotypes

Tensile strength, friability, aggregation, and soil organic matter physical fractions of an Oxisol cultivated with sugarcane

A process-based model to simulate sugarcane orange rust severity from weather data in Southern Brazil

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