Consulta: subjectFacets:"Antibiosis"
Registros recuperados: 33
Data/hora: 07/06/2024 08:15:49

Efectividad in vitro de cepas nativas de Trichoderma spp. En aislados de Phytophthora parasítica D. Obtenidos de plantas de jamaica
Provedor de dados: 32
Autores: Esparza Luna, Linda Luz.
Se aislaron cepas nativas de Trichoderma spp. y Phytophthora parasitica en suelos  cultivados con jamaica y con alta incidencia de la enfermedad “pata prieta de la jamaica”. La  toma de muestras de suelo se ubicó en los municipios de Tecoanapa, Ayutla de los Libres,  San Marcos y Juan R. Escudero del estado de Guerrero. Las cepas patogénicas se aislaron de  tallo y raíz enfermo con síntomas evidentes de “pata prieta”. Trichoderma spp. se aisló  directamente de suelo mediante el método de dilución de esporas en cajas Petri con el medio  de cultivo Papa dextrosa agar. Se obtuvieron tres cepas de P. parasitica y 15  cepas de  Trichoderma,  correspondiendo a las siguientes especies, 8 a  T. asperellum,  3 a T.  harzianum, 1 a T. virens, 1 a T. inhamatum, 1 a...
Tipo: Tesis
Palavras-chave: Antagonismo; Antibiosis; Trichoderma spp; Phytophthora parasitica; Jamaica antangonism; Antibiotic; Trichoderma spp.; P. parasitica; Jamaica.
Ano: 2012
URL: http://hdl.handle.net/10521/1029

Efectividad in vitro de cepas nativas de Trichoderma spp. En aislados de Phytophthora parasítica D. Obtenidos de plantas de jamaica
Provedor de dados: 32
Autores: Esparza Luna, Linda Luz.
Se aislaron cepas nativas de Trichoderma spp. y Phytophthora parasitica en suelos  cultivados con jamaica y con alta incidencia de la enfermedad “pata prieta de la jamaica”. La  toma de muestras de suelo se ubicó en los municipios de Tecoanapa, Ayutla de los Libres,  San Marcos y Juan R. Escudero del estado de Guerrero. Las cepas patogénicas se aislaron de  tallo y raíz enfermo con síntomas evidentes de “pata prieta”. Trichoderma spp. se aisló  directamente de suelo mediante el método de dilución de esporas en cajas Petri con el medio  de cultivo Papa dextrosa agar. Se obtuvieron tres cepas de P. parasitica y 15  cepas de  Trichoderma,  correspondiendo a las siguientes especies, 8 a  T. asperellum,  3 a T.  harzianum, 1 a T. virens, 1 a T. inhamatum, 1 a...
Tipo: Tesis
Palavras-chave: Antagonismo; Antibiosis; Trichoderma spp; Phytophthora parasitica; Jamaica; Maestría; Fitopatología; Antangonism; Antibiotic; Jamaica.
Ano: 2009
URL: http://hdl.handle.net/10521/1357

Resistance of squash cultivars to Aphis gossypii
Provedor de dados: 75
Autores: Baldin,Edson LL; Marchi,Lia S; Schlick,Eunice C.
The Cucurbitaceae plants are damaged by attack of a wide spectrum of insects and microorganisms. Among the sucker insects causing damages on squash Cucurbita pepo (L.), the aphid Aphis gossypii (Glover) (Hemiptera: Aphididae) is pointed as one of the most important, once their nymphs and adults suck the sap of the leaves continuously, besides being potential vector of virus. The present research evaluated different cultivars, aiming to identify the resistance against this aphid. The cultivars Novita, Sandy, Caserta Cac Melhorada, Novita Plus, Samira, AF-2858 and Caserta TS were used in laboratory assays (T= 25±2ºC; RH= 70±10% and fotophase= 12 h). In the immature phase the duration of nymphal instars was evaluated, the total duration and their viability,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucubita pepo; Host plant resistance; Aphididae; Antibiosis; Agricultural entomology.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300020

Resistance of melon cultivars to Bemisia tabaci biotype B
Provedor de dados: 75
Autores: Baldin,Edson LL; da Silva,José Paulo GF; Pannuti,Luiz Eduardo R.
The silverleaf whitefly, Bemisia tabaci biotype B, is currently one of the most important pests of melon, causing direct and indirect damage to plants, and significantly reducing production in the field. Due to the need for alternative methods of chemical control in melon crops, the melon cultivars AF-646, AF-682, Don Luis, Frevo, Jangada, Nilo, Vereda, Amarelo Ouro and Hales Best were assessed at field, greenhouse, and laboratory trials for resistance to whitefly B. tabaci biotype B. In general, 'Hales Best' and 'Amarelo Ouro' were the most resistant, showing oviposition non-preference against whitefly. The trichome density is associated with the variation in oviposition on the cultivars and should be further investigated in future work. These results may...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo; Aleyrodidae; Silverleaf whitefly; Host plant resistance; Antixenosis; Antibiosis.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400007

Texas 953, Gossypium hirsutum L. como fonte de resistencia ao curuquere do algodoeiro Alabama argillacea Hubner.
Provedor de dados: 14
Autores: LUKEFAHR, M. J.; BRAGA SOBRINHO, R.; VIEIRA, R. de M.
bitstream/item/111113/1/BOLPES16.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Antibiose; Nivel de resistencia; Raca primitiva; Pest; Resistance; Leafworm; Leafworm infestation; Resistance level; Primitive racestock.; Alabama Argillacea; Algodão; Gossypium Hirsutum; Infestação; Larva; Praga; Resistência.; Antibiosis; Cotton.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/270794

Identificación morfológica y molecular de Prosapia simulans (Walker) (Hemiptera: Cercopidae), y selección y mecanismos de resistencia a este salivazo en híbridos de Brachiaria
Provedor de dados: 82
Autores: Castro,Ulises; Cardona,Cesar; Vera-Graziano,Jorge; Miles,John; Garza-Garcia,Ramón.
Prosapia simulans (Walker) es una especie de salivazo que ataca los pastos del género Brachiaria (Trin.) Griseb. desde México hasta Colombia y ocasiona pérdidas económicas a la industria ganadera. El desarrollo de cultivares resistentes es considerado el mejor método de control del salivazo. Este trabajo tuvo los siguientes objetivos: corroborar la identificación de P. simulans originarias de México y Colombia, probar nuevos híbridos de Brachiaria por resistencia a esta especie y caracterizar los mecanismos de resistencia presentes en ellos. Mediante la combinación de caracteres morfológicos (uso de claves taxonómicas, disección de la genitalia del macho) y técnicas moleculares (RAPD-PCR) se logró corroborar que P. simulans es plaga de Brachiaria spp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mosca pinta; Mejoramiento; Antibiosis; Tolerancia; Gramínea forrajera.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000400012

Nymphal development, lipid content, growth and weight gain of Nezara viridula (L.) (Heteroptera: Pentatomidae) fed on soybean genotypes
Provedor de dados: 82
Autores: Piubelli,Giorla C.; Hoffmann-Campo,Clara B.; Arruda,Iara C. de; Lara,Fernando M.
The effects of five soybean [Glycine max (L.) Merrill] genotypes ('BR-16', 'IAC-100', PI 227687, PI 229358, PI 274454) on nymphal development, adult weight and lipid content of the stink bug Nezara viridula (L.), were evaluated in the laboratory. When fed on the pods of PI 227687 (resistant) and of 'BR-16' (susceptible) nymph mortalities were respectively 66.2% and 27.5%. Second instar nymphs, maintained since hatching in petri dishes containing PI 274454 and 'BR-16' pods, weighed 1.1 mg and 1.0 mg, respectively; they were heavier than those fed with PI 227687 (0.7 mg) and 'IAC-100' (0.7 mg) pods. Adult fresh weights were 146.9 mg when fed on 'BR-16', 127.0 mg with PI 227687 and 125.5 mg with 'IAC-100'. The later two genotypes also negatively affected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant resistance; Antibiosis; Glycine max.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100019

Plant Resistance to Insects in Sorghum
Provedor de dados: 30
Autores: H.C.
Palavras-chave: Crops; Sorghum; Biological interaction; Animal developmental stages; Genotypes; Genes; Grain; Antibiosis; Eggs.
Ano: 1997
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4662

Host Selection Behavior of Helicoverpa armigera
Provedor de dados: 30
Palavras-chave: Pigeonpeas; Chickpeas; Allelochemicals; Genotypes; Integrated pest management; Animal developmental stages; Antibiosis; Semiochemicals; Grain legumes; Organic acids.
Ano: 1990
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4081

Expression of antixenosis and antibiosis components of resistance to spotted stem borer Chilo partellus in sorghum under greenhouse conditions
Provedor de dados: 30
Autores: Kumar, V.K.,( V. Kishore Kumar ).
Palavras-chave: Genotypes; Antibiosis; Sorghum; Defence mechanisms; Embryonic development; Animal developmental stages; Eggs; Sexual reproduction; Biological interaction; Planting.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3304

Resistance of sugarcane cultivars to Diatraea saccharalis
Provedor de dados: 86
Autores: Dinardo-Miranda,Leila Luci; Anjos,Ivan Antônio dos; Costa,Viviane Pereira da; Fracasso,Juliano Vilela.
The objective of this work was to evaluate the oviposition preference of Diatraea saccharalis and the effect of ten sugarcane cultivars on larval development. Oviposition preference was assessed under greenhouse conditions by three releases of couples of moths, with subsequent counting of egg masses and eggs per plant. In order to evaluate the effect of the cultivars on larval development, each plant was infected with about 150 eggs, and, 29 days later, the total number of internodes, number of bored internodes, number of life forms found, larval and pupal weight and length, and the width of larval head capsule were evaluated. The cultivars IACSP94-2101 and IACSP96-2042, the least preferred by D. saccharalis for oviposition, and IACSP94-2094, the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum; Antibiosis; Antixenosis; Sugarcane borer.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000100001

Resistance of Manihot esculenta and its intraspecific hybrids to the whitefly Aleurothrixus aepim (Hemiptera: Aleyrodidae)
Provedor de dados: 86
Autores: Lima,Willem Henrique; Ringenberg,Rudiney; Fancelli,Marilene; Ledo,Carlos Alberto da Silva.
Abstract: The objective of this work was to evaluate the resistance of Manihot esculenta and its hybrids (M. esculenta x M. esculenta ssp. flabellifolia and M. esculenta x M. esculenta ssp. peruviana) to the whitefly (Aleurothrixus aepim). The trial was carried out in a greenhouse from October to December 2015, and it was based on a completely randomized design with eight treatments (eight genotypes). The evaluated variables and replicates were the following: duration of the developmental phases of the whitefly (nine replicates); nymphal viability (nine replicates); egg viability (five replicates); period of incubation (five replicates); and number of eggs (three replicates). Trichome counting (nine replicates) and the colorimetric analysis (nine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiosis; Antixenosis; Pests; Varietal resistance; Wild cassava.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800885

SELECCIÓN DE AISLAMIENTOS DE Trichoderma spp. CANDIDATOS A BIOFUNGICIDAS PARA EL CONTROL DE Rhizoctonia sp. EN ARROZ
Provedor de dados: 100
Autores: Martínez,B; Reyes,Yusimy; Infante,Danay; González,E; Baños,Heyker; Cruz,A.
El Tizón de la Vaina, causado por el hongo Rhizoctonia solani Kühn, es considerada la segunda enfermedad de importancia en el cultivo del arroz, en Cuba y el mundo. La potencialidad de aislados del género Trichoderma como antagonista de patógenos del suelo es reconocida y muestra resultados positivos sobre R. solani. El presente trabajo tiene como objetivo seleccionar los aislamientos de Trichoderma spp. más promisorios en dependencia de su antagonismo in vitro y su eficacia en condiciones semicontroladas y de campo, para el biocontrol de Rhizoctonia sp. El antagonismo se evaluó por el método del cultivo dual, donde se observó la competencia por el sustrato, micoparasitismo y la antibiosis. Se calculó el porcentaje de inhibición del crecimiento radial...
Tipo: Journal article
Palavras-chave: Rhizoctonia sp; Trichoderma; Antagonismo; Interacción hifal; Antibiosis.
Ano: 2008
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522008000200009

Evaluación de la resistencia a Schizaphis graminum (Hemiptera: Aphididae) en cebada
Provedor de dados: 99
Autores: Tocho,Erica F.; Marino de Remes Lenicov,Ana M.; Castro,Ana M.
El pulgón verde de los cereales, Schizaphis graminum (Rondani), es una de las principales plagas de estos cultivos en el mundo y también presente en Argentina. Si bien el control químico es la práctica más utilizada, el uso de variedades resistentes (uno de los componentes principales del MIP) es la estrategia más efectiva y ambientalmente más amigable para el control de plagas. Dado que las plantas presentan distintos mecanismos que les permiten defenderse de los insectos, el objetivo de este trabajo fue caracterizar la resistencia a Schizaphis graminum en una población de líneas recombinantes de cebada, e identificar aquellas con mejores características, portadoras de genes de resistencia a este insecto. La antixenosis fue analizada por la prueba de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schizaphis graminum; Áfidos; Antixenosis; Antibiosis; Tolerancia.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802012000100001

Alternation of cowpea genotypes affects the biology of Callosobruchus maculatus (fabr.) (Coleoptera: Bruchidae)
Provedor de dados: 63
Autores: Lima,Marcileyne Pessôa Leite de; Oliveira,José Vargas de; Barros,Reginaldo; Torres,Jorge Braz.
Callosobruchus maculatus (Fabr.) is an important pest in stored cowpea, Vigna unguiculata (L.) Walp., with ample distribution in tropical and subtropical regions. The effect of alternation of cowpea genotypes, susceptible (S) and resistant (R), on the biology of (C. maculatus) was studied after four generations. A no-choice test was carried out in a completely randomized design, factorial scheme, with five treatments, four host combinations (RR, RS, SR and SS) and five replications. Each replication consisted of 30 grains of each genotype infested by two insect couples. The number of eggs per female was not different within or between combinations, evidencing that the genotypes and their alternation did not affect C. maculatus fecundity. Egg viability,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Plant resistance; Antibiosis; Stored cowpea pest.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100005

Biology of Bemisia tabaci (Genn.) B biotype (Hemiptera, Aleyrodidae) on tomato genotypes
Provedor de dados: 63
Autores: Oriani,Maria Auxiliadora de Godoy; Vendramim,José Djair; Vasconcelos,Cristina Jensen.
Brazil is one of the main tomato (Solanum lycopersicum) producers worldwide. Nevertheless, considerable part of the production is lost due to Bemisia tabaci (Genn.) B biotype attacks. Resistant plants can be an important method for controlling this pest in an integrated pest management. Tests for evaluating some biological aspects of B. tabaci were carried out on 18 tomato genotypes, in controlled laboratory greenhouse conditions. Thirty-day-old plants placed in plastic cages were infested with 20 whitefly pairs each, for 24 h. The development of at least 30 eggs in three leaflets per plant (repetition) was observed until adult emergence. The development period of insects grown in LA1335, PI365928 and LA722 genotypes took three days longer when compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Whitefly; Antibiosis; Antixenosis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100006

Resistance mechanisms of sugarcane cultivars to spittlebug Mahanarva fimbriolata
Provedor de dados: 63
Autores: Dinardo-Miranda,Leila Luci; Fracasso,Juliano Vilela; Perecin,Dilermando; Oliveira,Mariana Cecília de; Lopes,Diego Olympio Peixoto; Izeppi,Tiago Sabongi; Anjos,Ivan Antonio dos.
ABSTRACT The spittlebug Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae) is one of the most important pests of sugarcane in Brazil. Measures for population control are currently restricted to the use of chemical insecticides and fungus Metarhizium anisopliae, in part because very little information exists regarding resistance of sugarcane cultivars. Therefore, the aim of this study was to evaluate resistance mechanisms of 12 different sugarcane cultivars to M. fimbriolata to provide information for growers for pest management. Isolated buds of each cultivar were planted in pots and kept in a greenhouse for approximately three months. The pots were then moved to climate test chambers (26 ± 1 ºC; 70 ± 10 % relative humidity; 12 h photoperiod) to carry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Antixenosis; Antibiosis; Tolerance.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200115

การศึกษากลไกความต้านทานของข้าวสายพันธุ์ดีต่อเพลี้ยกระโดดสีน้ำตาล
Provedor de dados: 106
Autores: Phamorn Pattawatang; Jate Kotcharerk; Suradet Palawisut.
Resistance mechanism of resistant varieties and promising lines of rice to brown planthopper, Nilaparvata lugens (Ståll) compared with standard resistance (PTB33 and Rathu Heenati) and standard susceptible (Taichung Native 1 : TN1) criteria to evaluate the reaction, the response of rice varieties and promising lines to the infestation of insects. Antixenosis resistance mechanisms, which describes a reaction dislike to eat or inhibit eating, affected to oviposition or fewer oviposition. Mechanical resistance Antibiosis explained by the percentage of surviving and development of the nymph stage to the adult, impact on the life cycle of insects and low feeding rates. Tolerance mechanisms of resistance can be explained by assessments of function plant loss...
Tipo: PhysicalObject
Palavras-chave: Rice; Resistant varieties; Resistant mechanism; Promising lines; Brown plant hopper; Nilaparvata lugens; Insect pest; Antixenosis; Antibiosis; Plant breeding; ข้าว; สายพันธุ์; พันธุ์ต้านทานแมลงศัตรูพืช; เพลี้ยกระโดดสีน้ำตาล; การระบาดของแมลง; กลไกความต้านทาน; การทดสอบพันธุ์ข้าว; การปรับปรุงพันธุ์ข้าว.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5667

ปฏิกิริยาของข้าวเจ้าสายพันธุ์ PRE01017-10-1-1-1 ต่อแมลงบั่วในเขตภาคเหนือตอนบนในสภาพโรงเรือนปฏิบัติการ
Provedor de dados: 106
Autores: Pannipa Yajai; Preeda Siangyai.
Reaction of PRE01017-10-1-1-1 rice promising line to gall midge (GM) resistance was evaluated in green house nursery at Phrae Rice Research Center during 2007-201. It was found that this promising line showed resistance (R) to high resistance (HR) to GM which collected from 5 areas, i.e., Mae Hong Son, Chiang Mai, Chiang Rai, Nan, and Phrae provinces. Furthermore, in 2012, the biotype of gall midge from 5 areas were studied and found that they were divided into two biotypes: 1) the gall midge collected from Mae Hong Son and Chiang Mai, which PRE01017-10-1-1-1 showed highly resistant  (HR) score to GM, and 2) the gall midge collected from Chiang Rai, Nan and Phrae which PRE01017-10-1-1-1 showed resistant (R) score to GM. The mechanism of resistance in...
Tipo: PhysicalObject
Palavras-chave: Rice gall midge; Biotype; Antibiosis; PRE01017-10-1-1-1; Rice promising line; ข้าว; ชีวชนิด; กลไกการต้านทาน; ข้าวสายพันธุ์ PRE01017-10-1-1-1; ข้าวเจ้าสายพันธุ์ดีเด่น; แมลงบั่ว; สภาพโรงเรือนปฏิบัติการ; เขตภาคเหนือตอนบน.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5528

Aislamiento de microorganismos para control biológico de Moniliophthora roreri
Provedor de dados: 109
Autores: Suárez Contreras,Liliana Yanet; Rangel Riaño,Alba Luz.
Moniliophthora roreri es un hongo que causa la moniliasis, una enfermedad de la mazorca en el cultivo de cacao (Theobroma cacao), con pérdidas hasta del 60% de la cosecha. El control biológico utilizando microorganismos endófitos surge como una alternativa para el manejo de esta enfermedad. En la presente investigación se evaluaron microorganismos con potencial para control biológico de M. roreri en Norte de Santander, Colombia. Para el efecto, se aisló e identificó este fitopatógeno y se utilizaron protocolos de desinfección de los posibles microorganismos antagonistas con siembras por diluciones seriadas, selección de los géneros microbianos con mayor potencial antagónico y evaluación de las cepas por la prueba de plato dual para evaluar el efecto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonistas; Antibiosis; Cacao; Control biológico; Moniliophthora roreri.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122013000400011

Is curtobacterium wilt biocontrol temperature dependent?
Provedor de dados: 1
Autores: Martins, Samuel Julio; Medeiros, Flavio Henrique Vasconcelos; Souza, Ricardo Magela; Vilela, Laize Aparecida Ferreira.
Abiotic stress interferes with plant-microbial interactions, but some microorganisms may buffer this interference. We investigated the interaction between temperature and bacterial wilt (Curtobacterium flaccumfaciens pv. flaccumfaciens - Cff) biocontrol and the ability of Bacillus subtilis strain ALB629 to colonize bean seedlings, to inhibit pathogen growth and to use different C and N sources. B. subtilis ALB629rif, a mutant selected from the wild population of ALB629, was used to monitor plant colonization at 20°C and 30°C. ALB629rif was detected only in the plant roots (103.22 CFU g-1) at the lower temperature but colonized the roots, stems, and leaves (105.85, 104.48, and 104.01 CFU g-1), respectively, at 30ºC. The area under the disease progress curve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.02.01-0 seed treatment; Phaseolus vulgaris; Antibiosis; Temperature; Rhizobacteria; PGPR Fitopatologia.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18018

Resistance of wild and near isogenic bean lines with arcelin variants to Zabrotes subfasciatus (Boheman): I - Winter crop
Provedor de dados: 44
Autores: Lara,Fernando M.
The objective of this study was to determine the resistance of winter crops of bean (Phaseolus vulgaris) lines with arcelin variants to Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae). Two trials, a no-choice test and a free-choice test, were set up under laboratory conditions using genotypes Arc. 1, Arc. 2, Arc. 3 and Arc. 4 (near isogenic lines containing arcelin 1, 2, 3 and 4, respectively), genotypes Arc. 1S, Arc. 3S and Arc. 5S (wild lines containing arcelin 1, 3 and 5, respectively), and genotypes IAPAR MD-808 and Porrillo 70. Plots with 10 g of each line and a proportion of 7 adult pairs/plot were used. Attractiveness, oviposition, emergence and adult weight, mortality, developmental period, and seed weight loss were determined....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Phaseolus vulgaris; Antixenosis; Preference; Antibiosis.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000300019

Antagonism and modes of action of Chaetomium globosum species group, potential biocontrol agent of barley foliar diseases
Provedor de dados: 51
Autores: Moya,Paulina; Pedemonte,Debora; Amengual,Susana; Franco,Mario E. E; Sisterna,Marina N.
"Net blotch" (Drechslera teres) and "Bipolaris spot blotch" (Bipolaris sorokiniana) are foliar diseases of barley. Biological control is currently considered as an efficient alternative to chemical management of these plant diseases. The aim of the present study was to identify 2 isolates of Chaetomium (C2 and C5), endophytics on barley seedlings and to study the in vitro interactions with D. teres and B. sorokiniana, isolated from seeds of the same host. Cultural and morphological characterization of all microorganisms was done. In addition, molecular characterization of Chaetomium spp. was conducted and dual culture tests were carried out to find, by microscopic observations, the effects of the antagonist on the morphology of the pathogens. The results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bipolaris sorokiniana; Chaetomium globosum; Drechslera teres; Antibiosis; Endophyte; Mycoparasitism.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000400001

Resistance of sugarcane cultivars to Mahanarva fimbriolata
Provedor de dados: 53
Autores: Dinardo-Miranda,Leila Luci; Fracasso,Juliano Vilela; Perecin,Dilermando; Miranda,Isabella Dinardo; Réchia,Nádia Mandello; Buzzatto,Driele Francine dos Santos.
ABSTRACT The spittlebug Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae) is one of the most important pest of sugarcane in Brazil. Population control measures are currently restricted to the use of chemical insecticides and the fungus Metarhizium anisopliae, in part because very little information exists regarding the resistance of sugarcane cultivars. Therefore, the aim of this study was to evaluate the resistance mechanisms of 18 sugarcane cultivars to M. fimbriolata to provide information for growers hoping to manage this pest. Isolated buds of each cultivar were planted in pots and maintained in a greenhouse for approximately three months. The pots were then moved to climate-controlled chambers (26 ± 1 ºC; 70 ± 10% RH; 12 h photoperiod) to carry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spittlebug; Antixenosis; Antibiosis; Tolerance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200314

Evaluation of forage grass resistance to Mahanarva fimbriolata (Stål)
Provedor de dados: 53
Autores: Grisoto,Eliane; Vendramim,José Djair; Lourenção,André Luiz; Usberti,José Alfredo; Olinda,Ricardo Alves de.
ABSTRACT The aim of this study was to select forage grasses with potential resistance to Mahanarva fimbriolata by assessing effects on insect. No-choice assays were conducted with 12 genotypes and laboratory-reared insects. The following parameters were assessed: mortality and duration of the nymphal stage; adult weight and longevity; pre-oviposition period; number of eggs/female; viability and duration of the embryonic period. As main result it was verified that the mortality of nymphs reared on Panicum maximum cv. Paredão is almost complete and that this forage grass may be characterized as resistant to this insect by antibiosis. Further, the grasses can be divided into three groups following a cluster analysis: P. maximum cv. Aries, Setaria sphacelata...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spittlebug; Antibiosis; Brachiaria; Host plant resistance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100107

Role of killer factors in the inhibitory activity of bio-control yeasts against Penicillium expansum and Aspergillus ochraceus
Provedor de dados: 52
Autores: Portes,Ciro da Silva; Oliveira,Andriélen Virke de; Simer,Patrícia; Lunkes,Alessandra Machado; Coelho,Alexandre Rodrigo.
This work evaluated the antagonism of killer positive yeast strains (isolated from 11 samples of different frozen fruit pulps) against the strains of Penicillium expansum and Aspergillus ochraceus. Of the total 41 killer yeasts tested in YM agar, 19 showed antibiosis against P. expansum and A. ochraceus, with inhibition zone ranging from 10 to 18 mm and 10 to 19 mm, respectively. In the following step, the extracellular activity of Kluyveromyces sp. FP4(13) was tested performing the assay in YM broth. The antifungal activity of Kluyveromyces sp. FP4(13) cell-free culture supernatant (25ºC/96 h) was more effective against the conidia germination, showing inhibition rates of 93.33 and 86.44% for P. expansum and A. ochraceus, respectively. The micelial growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Moulds; Killer yeasts; Biocontrol; Antibiosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400012

Evaluation of the Antidiabetic and Antibacterial Activity of Cissus sicyoides
Provedor de dados: 52
Autores: Beltrame,Flavio Luis; Pessini,Greisiele Lorena; Doro,Dani Luce; Dias Filho,Benedito Prado; Bazotte,Roberto Barbosa; Cortez,Diógenes Aparício Garcia.
In this work we investigated the antidiabetic and antibacterial effect of Cissus sicyoides (CS) from Brazil. Diabetic rats that received water (A group) or extracts from the aerial parts of the plant (Cs group) during four weeks were employed. After this period, serum levels of glucose, cholesterol and triglycerides were measured. Glycemia was not affected by treatment with CS. However, there was an increased cholesterol and triglyceride level in Cs group. In addition, bioassay-guided fractionation of methanolic extract from aerial parts of CS was performed for isolation of antibacterial compounds.beta-Sitosterol and sitosterol-beta-D-glucopyranoside isolated showed antibacterial activity against Bacillus subtilis with minimal inhibitory concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cissus sicyoides; Vitaceae; Experimental diabetes mellitus; Antibiosis; Steroids.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100004

Endophytic fungi from Myrcia guianensis at the Brazilian Amazon: distribution and bioactivity
Provedor de dados: 58
Autores: Banhos,Elissandro Fonseca dos; Souza,Antonia Queiroz Lima de; Andrade,Juliano Camurça de; Souza,Afonso Duarte Leão de; Koolen,Hector Henrique Ferreira; Albuquerque,Patrícia Melchionna.
Beneficial interactions between plants and microorganisms have been investigated under different ecological, physiological, biochemical, and genetic aspects. However, the systematic exploration of biomolecules with potential for biotechnological products from this interaction still is relatively scarce. Therefore, this study aimed the evaluation of the diversity and antimicrobial activity of the endophytic fungi obtained from roots, stems and leafs of Myrcia guianensis (Myrtaceae) from the Brazilian Amazon. 156 endophytic fungi were isolated and above 80% were identified by morphological examination as belonging to the genera Pestalotiopsis, Phomopsis, Aspergillus, Xylaria, Nectria, Penicillium and Fusarium. Fermented broth of those fungi were assayed for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secondary metabolites; Fungus/plant interaction; Antibiosis; Amazonian endophytic fungi.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100021

Bacterial selection for biological control of plant disease: criterion determination and validation
Provedor de dados: 58
Autores: Mota,Monalize Salete; Gomes,Cesar Bauer; Souza Júnior,Ismail Teodoro; Moura,Andréa Bittencourt.
Abstract This study aimed to evaluate the biocontrol potential of bacteria isolated from different plant species and soils. The production of compounds related to phytopathogen biocontrol and/or promotion of plant growth in bacterial isolates was evaluated by measuring the production of antimicrobial compounds (ammonia and antibiosis) and hydrolytic enzymes (amylases, lipases, proteases, and chitinases) and phosphate solubilization. Of the 1219 bacterial isolates, 92% produced one or more of the eight compounds evaluated, but only 1% of the isolates produced all the compounds. Proteolytic activity was most frequently observed among the bacterial isolates. Among the compounds which often determine the success of biocontrol, 43% produced compounds which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizobacteria; Antibiosis; Mesocriconema xenoplax; Obligate parasites; Perennial plants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100062

Evaluation of Resistance of Cucumber Cultivars to the Vegetable Leafminer (Liriomyza sativae Blanchard) (Diptera: Agromyzidae) in Greenhouse
Provedor de dados: 117
Autores: Basij,Moslem; Askarianzaeh,Alireza; Asgari,Shahriyar; Moharramipou,Saeid; Rafezi,Ramin.
The leafminer, Liriomyza sativae Blanchard, is distributed around the world and is an important pest of vegetables and ornamentals. Given the resistance potential of the leafminer to current insecticides, the use of resistant plant cultivars and parasitoids could be effective integrated pest management (IPM) strategies against it. Cucumber (Cucumis sativus L.) is a preferred host for this insect. Seventeen cultivars of cucumber have been evaluated to study resistance mechanisms to L. sativae. All cucumber cultivars were evaluated in screening tests in greenhouse with indices such as the number of leafminer stings, the number of larval mines, the proportion of larval mines to leafminer stings, and the rate of injury. Significant differences (p &lt; 0.01)...
Tipo: Journal article
Palavras-chave: Cucumber cultivar; Screening; Antibiosis; Screening.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300008

Characterization of resistance expression in genotypes of Solanum Section Lycopersicon against Tuta absoluta (Lepidoptera: Gelechiidae)
Provedor de dados: 118
Autores: Vitta,Nancy; Estay,Patricia; Chorbadjian,Rodrigo A.
N. Vitta, P. Estay, and Chorbadjian, R.A. 2016. Characterization of resistance expression in genotypes of Solanum Section Lycopersicon against Tuta absoluta (Lepidoptera: Gelechiidae). Cien. Inv. Agr. 43(3):366-373. Two studies were conducted with the aim of characterizing the antixenosis and antibiosis resistance expression of genotypes in the Solanum section Lycopersicon against Tuta absoluta (Meyrick). The species used were S. lycopersicum (Fiorentino, Naomi and Belle), S. habrochaites (RCAT030597, PI126446), S. chilense (INIABB79), S. peruvianum (RCAT031296, RCAT039874 and RCAT030403) and S. pimpinellifolium (PI390739). For the antixenosis bioassay, a leaf was removed from plants of each genotype and placed in a cup with a floral foam soaked in water....
Tipo: Journal article
Palavras-chave: Antibiosis; Antixenosis; Host plant resistance; Insect-plant interactions; Tomato.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300003

Popcorn genotypes resistance to fall armyworm
Provedor de dados: 65
Autores: Oliveira,Nádia Cristina de; Suzukawa,Andréia Kazumi; Pereira,Carolina Bertuzzi; Santos,Hayssa Vilela; Hanel,Aldo; Albuquerque,Fernando Alves de; Scapim,Carlos Alberto.
ABSTRACT: The aim of this study was to evaluate popcorn genotypes for resistance to the fall armyworm, Spodoptera frugiperda. The experiment used a completely randomized design with 30 replicates. The popcorn genotypes Aelton, Arzm 05 083, Beija-Flor, Colombiana, Composto Chico, Composto Gaúcha, Márcia, Mateus, Ufvm Barão Viçosa, Vanin, and Viviane were evaluated,along with the common maize variety Zapalote Chico. Newly hatched fall armyworm larvae were individually assessed with regard to biological development and consumption of food. The data were subjected to multivariate analyses of variance and genetic divergence among genotypes was evaluated through the clustering methods of Tocher based on generalized Mahalanobis distances and canonical variable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiosis; Nutrition index; Plant breeding; Spodoptera frugiperda.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200154

Strawberry genotypes with resistance to Tetranychus urticae mediated by leaf trichomes
Provedor de dados: 64
Autores: Resende,Juliano Tadeu Vilela de; Lima Filho,Renato Barros de; Ribeiro,Luana Karolline; Corrêa,Jéssica Vanessa Wosniak; Maciel,Cleber Daniel de Goes; Youssef,Khamis.
ABSTRACT The two-spotted spider mite (Tetranychus urticae) is the main pest encountered in strawberry cultivation in protected environments, causing damage and increasing the cost of production associated with chemical control. Breeding programs are essential for obtaining new cultivars that are more tolerant to two-spotted spider mites. The objective was to evaluate whether the leaf trichomes mediatethe resistance of intraspecific strawberry hybrids to two-spotted spider mites. Preselected hybrids were subjected to infestation by two-spotted spider mites and evaluated via the no-choice assay and the travel test. Resistance was correlated with the density of trichomes, both glandular and non-glandular, present on the surface of the leaflets of strawberry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Intraspecific hybridization; Antibiosis; Antixenosis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100220