Consulta: subjectFacets:"Powdery mildew"
Registros recuperados: 14
Data/hora: 10/06/2024 11:00:34

Evaluación de extracto de gobernadora Larrea tridentata (D. C) Coville (L.) en el control de cenicilla Podosphaera xanthii (sin. Sphaerotheca fuliginea) del melón Cucumis melo L.
Provedor de dados: 32
Autores: Chávez Solis, Aarón Leobardo.
El estudio se realizó la región de Ceballos del municipio de Mapimí, Durango. Donde se evaluó la efectividad del extracto de gobernadora (Larrea tridentata (D.C.) coville (L.)). en el control de cenicilla en la producción de melón. El cultivo se estableció en una parcela de 2,500 m2 en un diseño de bloques en arreglo de parcelas sub sub divididas, donde las parcelas grandes fueron las variedades de melón (Crusier y Navigator), las parcelas medianas fueron las formulaciones del extracto de gobernadora (agua, hidroalcohólico 50% agua y 50% alcohol y, etanolico 96%) y las parcelas chicas correspondieron a las dosis (0, 1000, 5000 y 10000 mg de planta por litro de agua). Se evaluó la severidad de infección de cenicilla Podosphaera xanthii mediante una escala...
Palavras-chave: Cenicilla; Melón; Extracto de gobernadora; Larrea tridentata; Powdery mildew; Melon; Creosote bush extract; Fitopatología; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1703

Genetics of resistance to powdery mildew (Microsphaera diffusa) in Brazilian soybean populations
Provedor de dados: 74
Autores: Gonçalves,Elaine Cristine Piffer; Di Mauro,Antonio Orlando; Centurion,Maria Aparecida Pessôa da Cruz.
Crosses between resistant and susceptible soybean cultivars were performed and the F2 populations were obtained to study the inheritance of soybean resistance to powdery mildew and to estimate the number and action of genes related to resistance. The reaction to powdery mildew was studied in a greenhouse and pots carrying plants with symptoms were distributed among the pots carrying the genotypes to be tested as a source of inoculum. Individual plants were scored according to the method of Yorinori (1997), with modifications, and classified as resistant or susceptible. The results showed that adult soybeans plants can present resistance to powdery mildew, which is controlled by one major gene with a dominant effect.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Powdery mildew; Glycine max; Genetic control.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300015

An AFLP marker linked to the Pm-1 gene that confers resistance to Podosphaera xanthii race 1 in Cucumis melo
Provedor de dados: 74
Autores: Teixeira,Ana Paula Matoso; Barreto,Fatima Aparecida da Silva; Camargo,Luis Eduardo Aranha.
Brazil produced 330,000 metric tons of melons in 2005, principally in the Northeast region where one of the most important melon pathogens is the powdery mildew fungus Podosphaera xanthii. The disease is controlled mainly by incorporating single dominant resistance genes into commercial hybrids. We report on linkage analysis of the Pm-1 resistance gene, introgressed from the AF125Pm-1 Cantalupensis Charentais-type breeding line into the yellow-fleshed melon (Group Inodorus) breeding line AF426-S by backcrossing to produce the resistant line AF426-R, and the amplified fragment length polymorphism (AFLP) marker M75/H35_155 reported to be polymorphic between AF426-S and AF426-R. Segregation analysis of M75/H35_155 using a backcross population of 143 plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AFLP marker; Cucumis melo; Disease resistance; Linkage analysis; Powdery mildew.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300023

Reaction of families and lines of melon to powdery mildew
Provedor de dados: 75
Autores: Sales Júnior,Rui; Nunes,Glauber HS; Michereff,Sami J; Pereira,Elaíne WL; Guimarães,Izabel M.
Powdery mildew, caused by Podosphaera xanthii, is an important disease of melon in the Brazilian Northeast. The objective of this work was to evaluate the reaction of families, lines and cultivars of melon to P. xanthii. Two experiments in simple lattice were carried out under field conditions in the municipalities of Mossoró and Baraúna to evaluate 144 families. In a greenhouse, an experiment was carried out in a completely randomized design to evaluate 19 lines and the cultivars Yellow Queen, Chilton and Hy Mark. Disease was assessed by a severity scale. There was genetic variability among families. The families 4, 5, 11, 14, 18, 23, 33, 42, 101, 112 and 140 were identified in both sites as resistant. The lines LOF-027, LOF-105, LPS-124, MEL-008 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Podosphaera xanthii; Powdery mildew; Resistance; Selection.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300021

Oídio de trigo: avaliação de linhagens Embrapa em 2018.
Provedor de dados: 14
Autores: COSTAMILAN, L. M.; SCHEEREN, P. L.; CAIERAO, E.; CASTRO, R. L. de.
bitstream/item/188930/1/2018CTO37.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Oídio; Trigo; Doença de Planta; Wheat; Plant diseases and disorders; Powdery mildew.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1102080

Oídio: avaliação de severidade em genótipos de soja, safra 2016/2017.
Provedor de dados: 14
Autores: COSTAMILAN, L. M.; BERTAGNOLLI, P. F.
bitstream/item/164782/1/ID441117-2017DO171p29.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Soybean.; Oídio; Doença de planta; Soja; Powdery mildew; Plant diseases and disorders.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1076907

Reação de clones de cajueiro-anão às principais doenças fúngicas em Pacajus, CE.
Provedor de dados: 14
Autores: MARTINS, M. V. V.; LIMA, J. S.; VIDAL NETO, F. das C.; MELO, D. S.; SERRANO, L. A. L.
As doenças do cajueiro são um dos principais problemas enfrentados pela cajucultura brasileira. As estratégias de manejo devem ser utilizadas de forma integradas para reduzir os danos à produção. A resistência genética torna-se uma das mais eficientes estratégias de manejo de doenças. Assim o objetivo do trabalho foi avaliar a reação dos clones de cajueiro-anão em fase de pré-lançamento à ao oídio, à antracnose e ao mofo-preto. Foi avaliada durante seis anos a ocorrência do oídio, da antracnose e do mofo-preto nos clones de cajueiro-anão, pertencentes ao Programa de Melhoramento Genético da Embrapa, cultivados no Campo Experimental de Pacajus, CE.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Mofo-preto; Anthracnose disease; Cashew black mould; Anacardium Occidentale; Oídio; Antracnose; Powdery mildew.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1134427

CONSUMERS' VALUATION OF DISEASE-RESISTANT NURSERY STOCK: A CASE STUDY OF DOGWOODS
Provedor de dados: 31
Autores: Gardner,   Justin G.; Eastwood,   David B.; Brooker,   John R.; Klingeman,   William E.
This article summarizes a study of consumers' willingness to pay (WTP), in urban areas in Tennessee, Mississippi, and Michigan, for a powdery mildew resistant dogwood tree. Powdery mildew is a disease affecting flowering dogwoods that can limit growth, detract from the appearance, and may cause plant decline and death.  Study objectives were to provide information about consumers' WTP and to identify potential marketing strategies for the introduction of the disease-resistant tree. On average, survey respondents indicated they are willing to pay a $13.35 premium for a flowering dogwood tree which is resistant to powdery mildew. Regression results led to inferences that the presence of dogwoods in a respondent's yard, presence of dogwoods infected with...
Tipo: Journal Article
Palavras-chave: Contingent valuation; Disease resistance; Dogwood; Marketing; Maximum likelihood; Nursery; Powdery mildew; Crop Production/Industries; Marketing.
Ano: 2003
URL: http://purl.umn.edu/14676

Inheritance of reaction to Leveillula taurica (Lev.) Arn. in Capsicum annuum L.
Provedor de dados: 63
Autores: Blat,Sally Ferreira; Costa,Cyro Paulino da; Vencovsky,Roland; Sala,Fernando Cesar.
The use of fungicides to control powdery mildew in sweet pepper has been ineffective and genetic resistance is the best alternative. Resistance sources identified in Capsicum annuum L. are rare and unsatisfactory. The purpose of this work was to study the inheritance of C. annuum reaction to powdery mildew. Three homozygous powdery mildew resistant parents, HV-12, Chilli and #124 and three susceptible lines, 609, 442 and 428 were used to obtain seven F1's and respectively their generations F2: HV-12 x 609, 442 × HV-12, 428 × HV-12, Chilli × 609, #124 × 609, Chilli × HV-12 and #124 × HV-12. The powdery epidemic was natural using inoculum from highly sporulating susceptible pepper host. Powdery mildew host reaction evaluations were carried out during the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sweet pepper; Powdery mildew; Genetic resistance; Gene action; Allelism.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000100008

New hosts of Oidiopsis haplophylli in the solanaceae family in Brazil
Provedor de dados: 102
Autores: Reis,Ailton; Boiteux,Leonardo S.; Paz-Lima,Milton L.; Silva,Patrícia P.; Lopes,Carlos A.
A powdery mildew disease was observed on leaves of Solanum gilo, S. melongena, S. tuberosum S. chacoense, Nicotiana rustica and N. tabacum in Brasília (Federal District), Brazil. Symptoms were mainly characterized by adaxial yellow areas in the leaves corresponding to white fungal colonies on the abaxial surface. Profuse sporulation was often observed. Light microscopy of the fungal colonies revealed the presence of conidiophores emerging through stomata with some having two or three branches. Ellipsoidal, subhyaline conidia were predominantly born singly and terminally on the conidiophore. All morphometrical characteristics agreed with those of Oidiopsis haplophylli (Syn. O. sicula). The teleomorph (Leveillula taurica) was not observed. Inoculation tests...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Etiology; Solanum gilo; S. melongena; S. tuberosum; S. chacoense; Nicotiana tabacum; N. rustica; Powdery mildew; Leveillula taurica.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000200017

An active role of systemic fungicides to curb wheat powdery mildew caused by Blumeria graminis f. sp. tritici
Provedor de dados: 111
Autores: Esmail, Samar Mohamed; Draz, Ibrahim Sobhy.
Efficacy of five systemic fungicides (flusilazole, propiconazole, diniconazole, cyproconazole and tetraconazol) in curbing powdery mildew disease of wheat (Sakha93) and its impact on yield components were evaluated under field condition during two successive season. Both fungicides, propiconazole and diniconazole exhibited the highest value of efficacy (88.80% each) recording the lowest rate of disease infection (1 each). The contrast was noticed with tetraconazol (55.50% efficacy, 4 disease infection) with significant differences to untreated control during both seasons. The results of fungicide application reflected on yield components where 1000-kernel and 1000-ml weights recorded the highest values with propiconazole (49.03 g and 742.65 g) followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat; Powdery mildew; Fungicide activity; Blumeria graminis f. sp. tritici; SEM examination.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4716

Genome-wide Identiﬁcation, Classiﬁcation and Expression Analysis of the Mildew Resistance Locus O ( MLO ) Gene Family in Sweet Orange ( Citrus sinensis )
Provedor de dados: 52
Autores: Liu,Li-Ping; Qu,Jin-Wang; Yi,Xiao-Qu; Huang,Huan-Huan.
ABSTRACT Mildew resistance Locus O (MLO), a gene family specific to plants, plays significant roles in the resistance to powdery mildew (PM) and response to a variety of abiotic stresses, plant growth and development. Despite their importance as barley, rice, wheat, few studies are reported in dicots except Arabidopsis; no global analysis has been performed in the burgeoning model fruit plant sweet orange (Citrus sinensis). The recent release of the genome sequences of C. sinensis provides an opportunity to conduct a comprehensive overview the evolution and features of the MLO gene family in sweet orange. In this study, amount to 14 members of the Citrus sinensis MLO gene (CisMLO) family according to their gene structures, conserved motifs, and similitude...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; MLO gene family; Powdery mildew; Abiotic stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100426

The alternative control of powdery mildew complex (Leveillula taurica and Erysiphe sp.) in tomato in the Azapa Valley, Chile
Provedor de dados: 118
Autores: Sepúlveda-Chavera,Germán; Salvatierra-Martínez,Ricardo; Andía-Guardia,Rodrigo.
The powdery mildew complex (Leveillula taurica and Erysiphe sp.) is one of the major factors limiting tomato (Solanum lycopersicum) production in the Azapa Valley, Chile. This problem is especially severe in the case of protected crops because the options for the treatment of these crops with chemical fungicides are limited. This study evaluated the effects of 0.5 and 1.0 kg100 L-1 Ospo-V55® and 10% raw cow's milk on tomato leaflets infected by powdery mildew complex. Ospo-V55®, with active ingredients consisting of 10% p/p of algae extract (IB-101) and 0.8% of microorganism concentrate, was evaluated in this study. Ospo-V55® contains flavonoids, alkaloids and phenols, oligo- and polysaccharides, 8.6% protein, 0.5% magnesium and trace amounts of...
Tipo: Journal article
Palavras-chave: Alternative product; Conidial germination; Ospo-V55®; Powdery mildew; Raw cow's milk; Severity; Tomato; Valle de Azapa.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100010

Identification of Pm24, Pm35 and Pm37 in thirteen Egyptian bread wheat cultivars using SSR markers
Provedor de dados: 64
Autores: Emara,Hassan Mahmoud; Omar,Ayman Feisal; El-Shamy,Moustafa Mahmoud; Mohamed,Mona Elsaid.
ABSTRACT Powdery mildew of wheat (Triticum spp.) caused by Blumeria graminis f.sp. tritici (DC) E.O. Speer Em. Marchal is one of the most important bread wheat diseases in Egypt. All the Egyptian common bread wheat cultivars are susceptible to that disease at seedling and adult stages. Breeding of resistant cultivars is the most economical and environmentally safe method to eliminate the disease and reduce crop losses. Combinations of two or more effective resistance genes may lead to better, more durable resistance to that disease. Eight Pm genes i.e. Pm2, Pm6, Pm12, Pm16, Pm24, Pm35, Pm36 and Pm37 out of 21 powdery mildew monogenic wheat lines (Pm) were resistant to 42 individual isolates of powdery mildew collected from different governorates in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Powdery mildew; Genetic control; DNA; Molecular markers.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000300279