Genótipos de tomateiro do banco de germoplasma de hortaliças da UFV resistentes à pinta preta / Tomato genotypes from BGH-UFV resistant to early blight

A pinta preta do tomateiro é uma das principais doenças da cultura. Assim, o objetivo deste trabalho foi caracterizar 49 subamostras de tomateiro do Banco de Germoplasma de Hortaliças da Universidade Federal de Viçosa (BGH-UFV) quanto à pinta preta. O experimento ocorreu em Viçosa, MG, entre dezembro de 2007 e abril de 2008. Utilizou-se delineamento em blocos casualizados com três repetições e as testemunhas Débora, Fanny, Santa Clara e IPA-6. Realizaram-se cinco avaliações com base na severidade da doença. Com os valores de severidade calculou-se a área abaixo da curva de progresso da doença (AACPD), possibilitando uma melhor visualização dos resultados. Foi realizada a análise de variância, seguido do agrupamento das médias de AACPD pelo teste de Scott-Knott, a 5% de significância. As subamostras BGH-2109, BGH-2110, BGH-2115, BGH-2122, BGH-2134, BGH-2135 e BGH-2142 apresentaram menor média de AACPD em relação às testemunhas, podendo ser utilizadas em futuros programas de melhoramento.

Tomato early blight is one of the most important diseases of this crop. The aim of this study was to characterize 49 tomato sub-samples of the Vegetable Germoplasm Bank of the Universidade Federal de Viçosa (BGH-UFV) for early blight. The assay was carried out in Viçosa, Minas Gerais State, Brazil, between December 2007 and April 2008. The experimental design consisted of a randomized block with three replications and the controls Débora, Fanny, Santa Clara and Ipa-6. There were 5 evaluationsbased on the disease severity. With the severity values, the area under the disease progress curve (AUDPC) was calculated, enabling a better visualization of the results. Variance analysis was performed, followed by the grouping of the AUDPC averages by the Scott-Knott test at the 5% significance level. The sub-samples BGH-2109, BGH-2110, BGH-2115, BGH-2122, BGH-2134, BGH-2135 and BGH-2142 had a lower AUDPC average in relation to the controls, and could be used in future breeding programs.

GENÓTIPOS DE TOMATEIRO DO BANCO DE GERMOPLASMA DE HORTALIÇAS DA UFV RESISTENTES À PINTA PRETA

ABSTRACT Tomato early blight is one of the most important diseases of this crop. The aim of this study was to characterize 49 tomato sub-samples of the Vegetable Germoplasm Bank of the Universidade Federal de Viçosa (BGH-UFV) for early blight. The assay was carried out in Viçosa, Minas Gerais State, Brazil, between December 2007 and April 2008. The experimental design consisted of a randomized block with three replications and the controls Débora, Fanny, Santa Clara and Ipa-6. There were 5 evaluationsbased on the disease severity. With the severity values, the area under the disease progress curve (AUDPC) was calculated, enabling a better visualization of the results. Variance analysis was performed, followed by the grouping of the AUDPC averages by the Scott-Knott test at the 5% significance level. The sub-samples BGH-2109, BGH-2110, BGH-2115, BGH-2122, BGH-2134, BGH-2135 and BGH-2142 had a lower AUDPC average in relation to the controls, and could be used in future breeding programs.

RESUMO A pinta preta do tomateiro é uma das principais doenças da cultura. Assim, o objetivo deste trabalho foi caracterizar 49 subamostras de tomateiro do Banco de Germoplasma de Hortaliças da Universidade Federal de Viçosa (BGH-UFV) quanto à pinta preta. O experimento ocorreu em Viçosa, MG, entre dezembro de 2007 e abril de 2008. Utilizou-se delineamento em blocos casualizados com três repetições e as testemunhas Débora, Fanny, Santa Clara e IPA-6. Realizaram-se cinco avaliações com base na severidade da doença. Com os valores de severidade calculou-se a área abaixo da curva de progresso da doença (AACPD), possibilitando uma melhor visualização dos resultados. Foi realizada a análise de variância, seguido do agrupamento das médias de AACPD pelo teste de Scott-Knott, a 5% de significância. As subamostras BGH-2109, BGH-2110, BGH-2115, BGH-2122, BGH-2134, BGH-2135 e BGH-2142 apresentaram menor média de AACPD em relação às testemunhas, podendo ser utilizadas em futuros programas de melhoramento.

Distribution and factors associated with Fasciola hepatica infection in cattle in the south of Espírito Santo State, Brazil

Fasciolosis is a disease that affects the liver parenchyma and bile ducts of numerous animals, including humans, which causes economic losses and threatens public health. The present work aimed at reporting the distribution and factors connected with Fasciola hepatica infection in cattle in ten municipalities in southern Espírito Santo, Brazil, between 2008 and 2009. During this period, 50 rural properties in ten cities were analyzed and fecal samples from 10 percent of the cattle on each farm were collected. Of the 717 samples analyzed, 154 (21.33 percent) presented Fasciola hepatica eggs. As for the 50 rural properties studied, 32 (64 percent) had animals positive for fasciolosis. Throughout the evaluation, it was observed that 42 (84 percent) rural properties had flooded areas, 33 (66 percent) were located at altitudes less than 226 meters, in 36 (72 percent) mollusks were found, 47 (94 percent) had other definitive hosts (horses, sheep, goats) and 25 (50 percent) had previous cases of bovine fasciolosis. The present results showed a high rate of bovine fasciolosis in the analyzed region whereas infected animals are present in all the municipalities. Based on statistical analysis, it was concluded that there was an association between the presence of flooded areas and other definitive hosts in rural properties where bovine fasciolosis was detected.(AU)