Characterization of Cucurbit Production Systems and Disease Prevalence in Municipalities in Pernambuco

Abstract

-Cucurbits have great economic, nutritional and social importance in the Brazilian semiarid region. In this region, many factors can result in reduced productivity of these crops, especially fungal and viral diseases. Therefore, knowledge of cucurbits is crucial for proper disease management. The objective of this work was to identify the major diseases of cucurbits grown in some municipalities in the Hinterland of the state of Pernambuco. Thus, plant samples were collected with symptoms in crops in the municipalities of Salgueiro, Serra Talhada, Floresta, Petrolândia, Ibimirim, Custódia and Inajá. A questionnaire was also applied to gather information about the production profile of producers. Seven fungal pathogens infecting cucurbits were identified: Pseudoperonospora cubensis, Colletotrichum sp., Podosphaera xanthii, Rhizoctonia solani, Didymella bryoniae, Fusarium sp. e Alternaria sp., and three viruses as well: Papaya ringspot viruswatermelon strain (PRSV-W), Watermelon mosaic virus (WMV), Zucchini yellow mosaic virus (ZYMV). It was found that in small crops, there is limited search for technical information om cropping, and these crops originate mostly from native seeds, in contrast to medium and large producers, who use improved cultivars. The melon and watermelon crops are the most commercially exploited, while pumpkins are used in subsistence agriculture. As for plant health problems, most respondents reported knowing the main diseases that occur in crops and perform disease control based on personal experience and / or through the help of the technical assistance provided by agricultural stores. In a few cases, in large farms, there was an agronomist to assist in this type of control.Keywords: Plant pathology survey. Citrullus. Cucurbita. Cucumis. Fungi. Viruses. CARACTERIZAÇÃO DOS SISTEMAS DE PRODUÇÃO DE CUCURBITÁCEAS E DA PREVALÊNCIA DE DOENÇAS EM MUNICÍPIOS PERNAMBUCANOSRESUMO -As cucurbitáceas possuem grande importância econômica, nutricional e social no Semiárido brasileiro. Nesta região, diversos fatores podem acarretar em redução na produtividade dessas culturas, destacando-se as doenças fúngicas e viróticas, tornando-se necessário o conhecimento das mesmas para um adequado manejo. Assim, o objetivo desse trabalho foi identificar as principais doenças de cucurbitáceas produzidas em alguns municípios localizados no Sertão Pernambucano. Para tanto, foram coletadas amostras de plantas com sintomas em cultivos nos municípios de Salgueiro, Serra Talhada, Floresta, Petrolândia, Ibimirim, Custódia e Inajá. Também foi aplicado um questionário visando obter informações do perfil produtivo dos produtores. Identificou-se sete patógenos fúngicos infectando cucurbitáceas, Pseudoperonospora cubensis, Colletotrichum sp., Podosphaera xanthii, Rhizoctonia solani, Didymella bryoniae, Fusarium sp. e Alternaria sp., e três vírus, Papaya ringspot virus type watermelon (PRSV-W), Watermelon mosaic virus (WMV), Zucchini yellow mosaic virus (ZYMV). Verificou-se que nos pequenos cultivos, a busca por informaçõe...

Resistance to Fusarium Wilt in watermelon accessions inoculated by chlamydospores

“…Reports from producers and researchers working with watermelon breeding indicated the occurrence of this disease in planting areas. According to Silva et al (2016), in a survey about the frequency of diseases in areas of watermelon production in the state of Pernambuco, F. oxysporum f. sp. niveum is one of the pathogens observed.…”

“…In Brazil, the occurrence of Fusarium Wilt has been observed in fields of watermelon (Silva et al, 2016). However, there have been only a few studies in Brazil to evaluate the Fusarium Wilt resistance in cucurbits.…”

“…An alternative to the standard method is inoculation using chlamydospores. The occurrence of disease in watermelon when planting in areas with disease registration could be related to the existence of these structures in the soil (Silva et al, 2016). According to Sanogo and Zhang (2016), the chlamydospores would be the primary inoculum under these conditions.…”

Anti-Tumor and Anti-Inflammatory Activity In Vivo of Apodanthera congestiflora Cogn. (Cucurbitaceae)

“…In Brazil, 30 genera and 160 species are registered and distributed in all regions of the country [ 2 ]. According to Silva et al (2016) [ 3 ], cucurbits have considerable economic importance, due to the consumption of their vegetables that are produced and valued by the population, as is the case of the variant species of melon ( Cucumis melo L.), watermelon ( Citrullus lanatus (Thunb Matsum & Nakai)) and pumpkins ( Cucurbita sp.).…”