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| Registros recuperados: 41 | |
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| CORRALES-SÁNCHEZ,Jesús Benjamín; LÓPEZ-MEYER,Melina; VALDEZ-MORALES,Maribel; AGUILAR,Dora TREJO; BOJÓRQUEZ-ARMENTA,Yolani de Jesús; VALLE-CASTILLO,Carmen Elena; IBARRA-SARMIENTO,Carlos Ramiro; ROMERO-URÍAS,Cecilia de Los Ángeles; MORA-ROMERO,Guadalupe Arlene. |
| ABSTRACT Arbuscular mycorrhizal fungi (AMF) have the potential to reduce the deleterious effect of soil-borne pathogens, but their ability for pathogen biocontrol may vary depending on the genotype of the plant, the pathogen, and the AMF interaction. Thus, the aim of this work was to evaluate the effect of the Mexican biofertilizer Rizofermic-UV based on a mix of AMF formulation against the common bean root rot caused by the pathogenic fungus Rhizoctonia solani Kühn 1858 (Teleomorph: Thanatephorus cucumeris). Additionally, the total phenolic content, individual phenolic acid (caffeic, ferulic, o-cumaric, p-cumaric, sinapic, and vanillic), and the flavonoid (catechin, kaempherol, quercetin, and rutin) profiles were analyzed. Our results show that the AMF... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungus; Defense; Plant disease. |
| Ano: 2022 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2022000300316 |
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| MEIRA, C. A. A.; RODRIGUES, L. H. A.. |
| A ferrugem do cafeeiro é a principal doença da cultura do café. O conhecimento dos fatores que condicionam as epidemias de ferrugem e a sua previsão são importantes. Uma instância do processo de descoberta de conhecimento em bases de dados foi realizada para avaliar a aplicação de árvores de decisão na análise e no alerta da ferrugem. As classes do atributo meta foram definidas por intervalos da taxa de progresso da doença. Dados meteorológicos, a carga pendente de frutos e o espaçamento entre plantas serviram de atributos preditivos. As árvores de decisão obtidas auxiliaram na compreensão de quais variáveis, e como as interações dessas variáveis, conduziram a ferrugem no campo. O modelo de alerta para lavouras com alta carga pendente de frutos apresentou... |
| Tipo: Folhetos |
Palavras-chave: Mineração de dados; Inteligência artificial; Modelagem; Coffee; Plant disease; Café; Doença de Planta; Models. |
| Ano: 2009 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/662782 |
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| Silva,Laércio J da; Milagres,Carla do C; Silva,Derly José H da; Nick,Carlos; Castro,João Paulo A de. |
| The incidence of leaf diseases is one of the main factors limiting the tomato crop production, increasing the production cost due to excessive pesticide application. The basal leaf removal could reduce inoculum sources, disease severity and contribute to reducing the use of pesticide. Aiming to evaluate the efficiency of this practice on the reduction of tomato leaf diseases and the effect in the quality and in the productivity of the tomato plants for in natura consumption, two experiments were carried out to test four levels of basal leaf removal. Basal leaves removal, at fruit harvesting, is efficient in reducing the infected plant area by disease, what can mean smaller disease severity and least inoculum source in the field. Also, the all basal leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Defoliation; Plant disease; Cultural management. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300020 |
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| Lima,Dayane Cristina; Abreu,Ângela de Fátima Barbosa; Ferreira,Ricardo Augusto Diniz Cabral; Ramalho,Magno Antonio Patto. |
| A common bean (Phaseolus vulgarisL.) cultivar must combine desirable genotypes for several traits in order to be accepted by producers and consumers. This study aimed to evaluate selection efficiency when segregating bean populations for traits, by means of a selection index, in order to obtain superior progenies for traits considered. A total of 16 populations from the F4 and F5generations were evaluated in 2011 and 2012, respectively. The traits evaluated were plant architecture, plant disease, grain type and yield. Using standard scores (Z), the sum of the four traits (∑Z) was obtained and, based on this information, the best populations were identified. The evaluation of selection effectiveness was performed on 31 progenies from each population. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant architecture; Plant disease; Grain yield. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200132 |
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| SILVA,Flávia Fernanda Alves da; ALVES,Cassia Cristina Fernandes; OLIVEIRA FILHO,Josemar Gonçalves de; VIEIRA,Tatiana Manzini; CROTTI,Antônio Eduardo Miller; MIRANDA,Mayker Lazaro Dantas. |
| ABSTRACT Besides their value as therapeutic resources, medicinal plants may also be used as sources of active ingredients against phytopathogens. Fungi can grow and cause spoilage in food, thus, resusting in decrease in its quality and quantity. This research aimed at evaluating the effect of essential oil from Murraya paniculata (ML-EO) leaves on mycelial growth of Sclerotinia sclerotiorum, a fungus that poses high risk to several cultures, mainly soybean. Essential oil from M. paniculata (Rutaceae) leaves was obtained by hydrodistillation which was carried out by a Clevenger-type apparatus while its chemical composition was analyzed by GC-FID and GC-MS. β-Caryophyllene (23.8%), α-zingiberene (21.0%) and β-cubebene (10.2%) were the main constituents... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytopathogen; Rutaceae; Soybean; Alternative control; Plant disease. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000600413 |
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| BETTONI,JEAN CARLOS; COSTA,MURILO DALLA; GARDIN,JOÃO PETERSON PEREIRA; KRETZSCHMAR,AIKE ANNELIESE; PATHIRANA,RANJITH. |
| ABSTRACT Through in vitro tissue culture techniques it is possible to propagate high quality nursery plants faster. Cryotherapy is a promising tool, based on in vitro culture techniques, for achieving in a short time, high frequency of regenerating plants free of viruses. The objective of this review is to present and analyze the results of research conducted in cryotherapy methods based on cryopreservation protocols for recovery of cultivars free of micro-organisms with potential agronomic interest. The main methods employed in cryotherapy are encapsulation-dehydration, vitrification, encapsulation-vitrification and droplet vitrification, which are based on the immersion of preconditioned shoot tips in liquid nitrogen, followed by their recovery in vitro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis encapsulation-dehydration encapsulation-vitrification vitrification droplet-vitrification; Plant disease. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200404 |
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| Registros recuperados: 41 | |
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