Reação de clones de videira a Xanthomonas campestris pv. viticola, baseada nos componentes epidemiológicos do cancro bacteriano

Peixoto, Ana Rosa; Michereff, Sami Jorge; Mariano, Rosa de Lima Ramos; Viana, Ivanise de Oliveira

doi:10.1590/s0103-84782006000100001

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…For inoculation, the methodology proposed by Nascimento et al (2006) (Nascimento et al, 2005), which showed severity levels of the diseased leaf area varying from 2 to 91%. The evaluations were performed every seven days, for five consecutive weeks.…”

Section: Methodsmentioning

confidence: 99%

Infection by Xanthomonas campestris pv.viticola under temperature increase and carbon dioxide concentrations

Conceição¹,

Angelotti²,

Peixoto³

et al. 2018

Com. Sci.

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The experiments were carried out under controlled conditions to evaluate the impact of increased temperature and concentration of carbon dioxide on infection of Xanthomonas campestris pv viticola, the causal agent of bacterial canker in Vine seedlings. It proceeded the evaluation of the following epidemiological components: incubation period (PI), severity (SEV) and using that data were calculated the area under the disease progress curve (AUDPC). It used grape seedlings (Italia, Crimson Seedless, Sugraone and Selection 8) inoculated with bacterial suspension (108 CFU mL-1). The experimental design was completely randomized, factorial arrangement 4x4 (cultivar x temperature) and 4x2 (cultivar x carbon dioxide concentration) which was carried out twice. The data were subjected to variance analysis. Increasing temperature reduced bacterium’s incubation period with significant differences between genotypes. For Selection 8 and Crimson temperature increase caused enhancement on severity and AUDPC. For Seleção 8 the incubation period (PI) was extended from 7.93 to 30.18 days when the concentration changed from 390 to 770 µmol/mol. The increased CO2 concentration reduced AACPSD and SEV for Sugraone and Selection 8. The results show that the temperature and carbon dioxide (CO2) concentration of the air may have different effects on bacterial canker of grapevine.

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Section: Methodsmentioning

confidence: 99%

Infection by Xanthomonas campestris pv.viticola under temperature increase and carbon dioxide concentrations

Conceição¹,

Angelotti²,

Peixoto³

et al. 2018

Com. Sci.

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“…Para conocer si estos metabolitos pueden estar actuando sobre adultos de mosca blanca, se elaboró un extracto hidroalcohólico Se preparó el extracto según las metodologías de Nascimento et al (2006) y Granados (2010. Las hojas de cada cultivar se secaron a 40 °C por 7 días; se pulverizaron con la ayuda de un molino eléctrico hasta obtener un polvo grueso (2 mm).…”

Section: Determinación De Metabolitos Secundariosunclassified

Preferencia de mosca blanca (Paraleyrodes sp.) por cultivares de aguacate (Persea americana Mill.) en Fresno, Tolima

Sierra

Quiroga

Varón

2014

CTA

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La mosca blanca es una importante plaga que afecta el aguacate, y en Colombia no se posee suficiente información sobre este insecto. En este estudio se evaluó la incidencia de mosca blanca Paraleyrodes sp. pos. bondari en cuatro cultivares de aguacate (Choquette, Hass, Lorena, Santana). Se caracterizó el manejo del cultivo realizado por los agricultores y se analizó su efecto sobre la presencia del insecto en tres cultivares (Choquette, Hass, Lorena). Se encontraron algunos metabolitos secundarios en hojas de los cultivares Hass y Lorena y se evaluó el efecto del extracto de sus hojas sobre la mortalidad y el índice de repelencia de adultos de mosca blanca. Se presentó interacción entre el manejo del cultivo y los cultivares para la presencia del insecto; el manejo moderadamente químico tuvo la menor infestación en todos los cultivares. El incremento de fertilización edáfica y de insecticidas químicos incrementó la población del insecto, y la remoción de una hemiparásita la disminuyó. El cultivar Lorena presentó la mayor preferencia de mosca, aumento de población del insecto cuando hubo interacción entre cultivar y hojas maduras, índice de repelencia neutral, y mayor porcentaje de carbohidratos totales y no reductores. El cultivar Hass presentó mayor cantidad de cumarinas, terpenos y esteroides, y alto índice de repelencia. La atracción de Lorena por el insecto se debe a la presencia de carbohidratos, y la repelencia de Hass, a la de terpenos y/o esteroides. Se debe dirigir el trabajo de investigación sobre mosca blanca en aguacate hacia el cultivar Lorena.

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Sugarcane and mulberry silage supplementation of sheep during the peripartum period

David

Costa

Parren

et al. 2015

Trop Anim Health Prod

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The aim of this study was to evaluate the effects of supplementation with silage made from sugarcane alone or mulberry and sugarcane on the gastrointestinal nematodes and hematological parameters in peripartum Santa Inês ewes. Three groups, each of 15 ewes, were supplemented with either 100 % sugarcane silage or sugarcane silage and mulberry at ratios of either 75:25 or 50:50. The variables analyzed were weight, body condition, packed cell volume, total plasma protein, hemoglobin, total leukocytes, eosinophils, and number of parasite eggs per gram of feces. All variables were measured individually every 14 days, making ten samples per ewe. Diets with sugarcane added to different proportions of mulberry branches did not influence the blood and parasitological parameters of Santa Inês sheep naturally infected in the peripartum period.

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Reação de clones de videira a Xanthomonas campestris pv. viticola, baseada nos componentes epidemiológicos do cancro bacteriano

Abstract: RESUMO O cancro bacteriano, causado por Xanthomonas campestris pv. viticola (Xcv), é a doença bacteriana mais importante da videira na região do Submédio São

Cited by 9 publications

References 7 publications

Infection by Xanthomonas campestris pv.viticola under temperature increase and carbon dioxide concentrations

Infection by Xanthomonas campestris pv.viticola under temperature increase and carbon dioxide concentrations

Preferencia de mosca blanca (Paraleyrodes sp.) por cultivares de aguacate (Persea americana Mill.) en Fresno, Tolima

Sugarcane and mulberry silage supplementation of sheep during the peripartum period

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