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| Registros recuperados: 69 | |
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| Lourenção,André Luiz; Melo,Arlete M. T. de; Siqueira,Walter José; Colariccio,Addolorata; Melo,Paulo César T. de. |
| Treze linhagens avançadas e três cultivares de tomateiro foram avaliadas em condições de campo para resistência a tospovírus e a geminivírus, em Campinas (SP). O germoplasma avaliado compreendeu linhagens do grupo IAC e as cultivares Stevens, Franco e IPA-5. Um mesmo experimento foi instalado em duas épocas. Na primeira, o experimento foi conduzido de 12/2001 a 2/2002, e a única espécie de tospovírus incidente foi Tomato chlorotic spot virus (TCSV). Na segunda época, de 7 a 9/2002, houve infecção por Tomato yellow vein streak virus (TYVSV), sendo a avaliação realizada mediante determinação da porcentagem de plantas infectadas e pela intensidade dos sintomas, medida por escala de notas. Não houve discriminação dos tratamentos com base no primeiro critério,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Tomato chlorotic spot virus (TCSV); Tomato yellow vein streak virus (TYVSV); Resistência de plantas a doenças. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362004000200006 |
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| Morando,Rafaela; Baldin,Edson Luiz Lopes; Cruz,Patrícia Leite; Lourenção,André Luiz; Chiorato,Alisson Fernando. |
| The objective of this work was to evaluate bean genotypes for resistance to soybean looper (Chrysodeixis includens). Initially, free-choice tests were carried out with 59 genotypes, divided into three groups according to leaf color intensity (dark green, light green, and medium green), in order to evaluate oviposition preference. Subsequently, 12 genotypes with high potential for resistance were selected, as well as two susceptible commercial standards. With these genotypes, new tests were performed for oviposition in a greenhouse, besides tests for attractiveness and consumption under laboratory conditions (26±2ºC, 65±10% RH, and 14 h light: 10 h dark photophase). In the no-choice test with adults, in the greenhouse, the 'IAC Jabola', Arcelina 1, 'IAC... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Common bean; Host plant resistance; Nonpreference; Resistance mechanisms; Soybean looper.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000600450 |
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| Lourenção,André Luiz; Braga,Nelson Raimundo; Miranda,Manoel Albino Coelho de; Reco,Paulo César; Valle,Giuliana Etore do; Pereira,José Carlos Vila Nova Alves. |
| The use of soybean cultivars resistant to insects and diseases reduces the application of pesticides, decreasing production costs and promoting a sustainable agriculture. The damage of stink bugs and defoliators and the severity of powdery mildew (Microsphaera diffusa) in soybean of three maturity groups were evaluated under field conditions, at Tarumã and Ribeirão Preto, State of São Paulo, Brazil. Three experiments, one for each group, were carried out in the 1999/2000 and 2000/2001 growing seasons. In 1999/2000, the disease occurred in Tarumã; in that year, infestation of chrysomelids (Cerotoma sp. and Colaspis sp.) was observed in Ribeirão Preto. Low infestations of stink bugs occurred in both years and locations, but in Tarumã, at the stage of plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Microsphaera diffusa; Host plant resistance; Stink bugs; Defoliators. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600004 |
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| Boiça Júnior,Arlindo Leal; Campos,Zeneide Ribeiro; Lourenção,André Luiz; Campos,Alcebíades Ribeiro. |
| The silverleaf whitefly Bemisia tabaci B-biotype is an important pest of cotton; it affects plant vigour, transmits geminivirus and reduces lint quality. In order to evaluate the resistance of cotton genotypes, Gossypium hirsutum (L.), to the whitefly Bemisia tabaci B-biotype, both free-choice and no-choice attractiveness and non-preference for oviposition tests were carried out in a shade house, at room temperature. Low attractiveness to adults of this whitefly was observed for plants of genotypes Fabrika, CNPA Ita 90, Makina, Coodetec 407, and IAC 01-639 CPA 02-24, which may represent a resistance component of these genetic materials to the insect. Genotypes BRS Aroeira, Coodetec 406, Fabrika, and Coodetec 401 presented the non-preference-for-oviposition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; Aleyrodidae; Insecta; Silverleaf whitefly; Host plant resistance. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000200007 |
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| Valle,Giuliana Etore do; Lourenção,André Luiz; Novo,José Polese Soares. |
| Moscas brancas são pragas de diversas culturas, causam redução na produção e na qualidade do produto. Inseticidas, com diferentes modos de ação vêm sendo utilizados, sem muito sucesso. Neste trabalho avaliou-se a eficiência de inseticidas sobre ovos de diferentes idades (1, 3 e 5 dias) e de ninfas de 1° ínstar da mosca branca Bemisia tabaci biótipo B. Os experimentos foram realizados em condições de laboratório, sob temperatura de 25 ± 2°C e fotofase de 12 horas. Piriproxifem (75 mg L-1) atuou como excelente ovicida, sendo altamente eficiente, 3 dias de idade. Cartape (500 mg L-1) não teve efeito satisfatório, mas a 1000 mg L-1 foi eficiente em ovos com até 5 dias de idade. Quanto à ação sobre ninfas de 1° ínstar, para pulverizações na face superior das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bemisia argentifolii; Insecta; Mosca branca; Inseticidas. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000200013 |
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| Fontes,Fernanda von Hertwig Mascarenhas; Colombo,Carlos Augusto; Lourenção,André Luiz. |
| Bemisia tabaci (Genn.) represents a complex of cryptic species that causes losses of many valuable crops. Even though there are differences in their ability to colonize hosts, transmit phytovirus and develop resistance to insecticides, the genetic differentiation of the insect populations is important for the adoption of control measures. Therefore, the genetic diversity of B. tabaci populations in economically important crops in Brazilian locations was characterized through a microsatellite analysis. Eight microsatellite markers were used for the analysis of eight populations, three in Solanum tuberosum (States of São Paulo, Minas Gerais and Bahia), two in Glycine max (States of São Paulo and Mato Grosso), one in Phaseolus vulgaris and Brassica oleracea... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SSR; Biotype B; Population genetics; Silverleaf whitefly. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000100007 |
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| Moraes,Andrea Rocha Almeida de; Lourenção,André Luiz; Godoy,Ignácio José de; Teixeira,Gustavo de Carvalho. |
| Because of damages caused, general occurrence in crops, and high population levels, the most important peanut pest in Brazil is the thrips Enneothrips flavens Moulton (Thysanoptera: Thripidae). A field experiment was carried out during the 2001/2002 growing season, in Campinas and Pindorama, State of São Paulo, Brazil, to evaluate the influence of E. flavens on yield of six peanut cultivars. Treatments comprised three cultivars of the upright type and three of the runner type, with and without chemical control of the insect. Thrips infestation was evaluated by insect countings on young leaflets. Yield and yield reduction percentage due to the lack of thrips control were estimated. The lack of insect control resulted in yield reductions varying from 19.5 to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arachis hypogaea L.; Thysanoptera; Thripidae; Insecta; Host plant resistance. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500010 |
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| Fugi,Cristina Gomes Quevedo; Lourenção,André Luiz; Parra,José Roberto Postali. |
| A knowledge of the mechanisms of resistance present in genetic materials should help breeding programs in developing cultivars resistant to insects. The biology of Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) was studied on leaves of four soybean genotypes with different degrees of resistance to insects. The genotypes evaluated were cultivars IAC 17 and IAC 24, resistant to defoliators and stink bugs, line PI 229358, a source of multiple resistance to insects and used as parent in various lines selected for resistance to A. gemmatalis, and 'IAC PL-1', the susceptible control. The experiments were carried out in the laboratory, under controlled conditions of temperature (25 ± 2ºC), relative humidity (60 ± 10%) and photoperiod (14h). First instar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Velvetbean caterpillar; Host plant resistance. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000100006 |
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| Grego,Célia Regina; Vieira,Sidney Rosa; Lourenção,André Luiz. |
| The knowledge of the spatial distribution of insect populations in crops allows the estimation of the population density in space, the classification of damage impact on yield as well as decisions to be made about control measures. To evaluate the spatial distribution of the wheat armyworm Pseudaletia sequax Franclemont, in relation to the development and yield of triticale (Triticum secale Wittmack) under no-till management, samplings were taken at 302 points in a square grid measuring 10 x 10 m, in Campinas, SP, Brazil. The caterpillar population was evaluated by counting their number per meter at the base of triticale plants. Grain yield (kg ha-1), cover of the above-ground part (kg ha-1), mean plant height (m), and ground cover percentage were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum secale Wittmack; Insecta; Wheat armyworm; Geostatistics; Indicator kriging. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000400002 |
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| Takahashi,Karina Manami; Berti Filho,Evoneo; Lourenção,André Luiz. |
| The silverleaf whitefly Bemisia tabaci (Genn.) B-biotype (= B. argentifolii) (Hemiptera: Aleyrodidae) is a polyphagous insect attacking many plant species of economic importance. A comparison study was conducted on the duration of the egg-to-adult period, and the percentage of hatching eggs of Bemisia tabaci (Genn.) B-biotype on collard (Brassica oleracea L. var. acephala D.C.), soybean(Glycine max (L.) Merr.) and tomato (Lycopersicon esculentum Mill.) plants, as well as the egg-to-adult period of Encarsia formosa (Gahan) on the 1st, 2nd, 3rd and 4th whitefly nymphal instars on these three plant species. The experiments were conducted in a laboratory (25ºC, 70 ± 10% RH, 14-hour photophase). The duration of the egg-to-adult period of B. tabaci was 19.8 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hymenoptera; Aphelinidae; Hemiptera; Aleyrodidae; Silverleaf whitefly. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600011 |
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| Costa,Valmir Antonio; Guzzo,Élio César; Lourenção,André Luiz; Tavares,Márcio Aurélio Garcia Correia; Vendramim,José Djair. |
| Callosobruchus analis (F.) is considered an important pest in several countries in Africa, Asia and Oceania. It has been observed infesting seeds belonging to 15 Leguminosae genera, including peanut, bean, chickpea, pea, cowpea, and soybean. One of its main natural enemies is the parasitoid Dinarmus basalis (Rondani) (Hymenoptera: Pteromalidae), whose control efficiency has already been demonstrated in several studies. This paper records the occurrence of C. analis and its parasitoid, D. basalis, in stored soybean of the state of São Paulo, Brazil. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Glycine max; Hymenoptera; Pteromalidae; Coleoptera; Bruchidae. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300014 |
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| Bottignon,Marcos Ribeiro; Rufino,Elcio Rodrigo; Marques,Márcia Ortiz Mayo; Colombo,Carlos Augusto; Azevedo Filho,Joaquim Adelino de; Lourenção,André Luiz; Martins,Antônio Lúcio Mello; Siqueira,Walter José. |
| Lippia alba (Mill.) N.E.Br. is an aromatic and medicinal shrub native to the American continent. Despite its potential as a source of essential oil for the pharmaceutical and cosmetics industries, few selection and genetic improvement studies have been carried out. The aim of this study was to provide genetic information on this species for breeding programs, showing its selection potential, by investigating clonal half-sib progenies. The following characteristics were evaluated per plant: leaf dry mass (LDM), total dry mass (TDM), leaf yield (LY), essential oil yield (EOY) and oil production (OP). Estimates were made for the several genetic parameters including absolute genetic gain at 30% selection intensity, correlations and relative contribution of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic gain; Breeding; Essential oils. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000400009 |
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| Baldin,Edson Luiz Lopes; Vendramim,José Djair; Lourenção,André Luiz. |
| The tomato (Lycopersicon spp.) productivity is severely reduced by attack of several insects and microorganisms. It is economically one of the most important crops that has been extensively cultivated in the Americas. Therefore, assays were performed in the greenhouse and the laboratory to evaluate the possible interaction between resistant tomato genotypes and plant extracts on the control of the pest Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) biotype B. This evaluation was performed for genotypes IAC-Santa Clara, PI-134417, LA-716, PI-134418, and PI-127826, and aqueous extracts from seeds of Azadirachta indica A. de Jussieu (Rutales: Meliaceae), branches and leaves of Trichilia pallida Swartz (Rutales: Meliaceae). In the greenhouse, spraying with... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Aleyrodidae; Silverleaf whitefly; Host plant resistance; Botanical insecticide. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000500004 |
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| Yamamoto,Paula Yuri; Colombo,Carlos Augusto; Azevedo Filho,Joaquim Adelino; Lourenção,André Luiz; Marques,Márcia Ortiz Mayo; Morais,Guilherme Domingues da Silva; Chiorato,Alisson Fernando; Martins,Antônio Lúcio Mello; Siqueira,Walter José. |
| Lippia alba (Verbenaceae) is a shrub whose essential oil has important biological, pharmacological, and aromatizing properties. To reach the sustained cultivation of new species with economic potential, the present study aimed to evaluate L. alba performance for fresh leaf matter (FM), leaf dry matter (DM), virus symptoms (VS - Cucumber mosaic virus, CMV), oil yield (OY), and oil chemical composition (OC), and to evaluate DM stability and adaptability. Ten genotypes of four chemical groups (chemotypes) were evaluated in six experiments designed as randomized blocks with two plants per plot, over the whole State of São Paulo, Brazil. A 2.0 x 0.4 x 1.6 m spacing was used in Monte Alegre do Sul and Pindorama, while a 1.0 x 0.4 x 0.6 m spacing was used in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: G x E interaction; Phenotypic stability; Sustainable agriculture; Genetic breeding; Clonal selection. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500006 |
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| Rossetto,Carlos Jorge; Igue,Toshio; Miranda,Manoel Albino Coelho de; Lourenção,André Luiz. |
| O comportamento de trinta e cinco genótipos de soja foi estudado em condições de campo, em Campinas, SP, em relação ao ataque dos percevejos pentatomídeos Euschistus heros (F.), Piezodorus guildinii (Westwood) e Nezara viridula (L.). A infestação natural do campo experimental foi suplementada com a liberação de percevejos adultos. Em 1983/1984, o dano médio sofrido pelos genótipos foi moderado e, em 1984/1985, severo. Três critérios foram utilizados para avaliar a resistência das variedades: a porcentagem de área foliar retida após a maturação das vagens, o índice porcentual de dano de vagem e a produção de grãos. A testemunha suscetível usada foi o cultivar Paraná, que produziu apenas 402kg/ha e 31kg/ha em 1983/ 1984 e 1984/ 1985 respectivamente. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soja; Glycine max (L.) Merrill; Percevejos; Pentatomidae; Resistência de planta; Piezodorus guildinii (Westwood); Nezara viridula (L.); Euschistus heros (F.). |
| Ano: 1986 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051986000200011 |
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| Lourenção,André Luiz; Sabino,José Carlos. |
| Constatou-se a ocorrência de lagartas da espécie Acraga moorei Dyar (Lepidoptera: Dalceridae) alimentando-se de folhas de macadâmia (Macadamia integrifolia Maid. & Bet.) em Tietê (SP). A infestação ocorreu em maio-junho de 1993, em experimento de consorciação com cafeeiro, atingindo todas as plantas de macadâmia e, mais raramente, as de cafeeiro. Concentrando-se na parte média das plantas, as lagartas, de cor branca, permaneciam na face superior das folhas, alimentando-se preferencialmente do bordo para dentro. A transformação em pupa também se deu na face superior das folhas, com confecção de casulos brancos, e a oviposição, na face inferior, sendo os ovos colocados em pequenos grupos. Observou-se a incidência sobre lagartas do fungo branco... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta Macadamia integrifolia Maid. & Bet. Lespesia affinis (Tounsend) Brachymeria carinatifrons Gahan Paecilomyces farinosus (Holm ex. SF Gray). |
| Ano: 1994 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051994000200009 |
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| Nagai,Violeta; Gomes,Frederico Pimentel; Rossetto,Carlos Jorge; Lourenção,André Luiz. |
| Neste trabalho, determinou-se o tamanho da amostra para estudos de danos causados pelo caruncho Sitophilus zeamais Motschulsky, avaliados pelos métodos da escala visual de notas e do número de grãos danificados em relação ao total de grãos. O critério adotado para estimar o tamanho da amostra foi de que esse tamanho permitisse detectar uma diferença de 10 ou de 20% da média geral entre médias de danos, em cultivares de milho, e avaliar o dano médio por cultivar com um erro-padrão de 10 ou de 20% da média. Discutiu-se, também, a eficiência dos dois métodos para avaliar o dano causado pelo caruncho. Foram utilizados dados de dois experimentos de laboratório, conduzidos nos anos agrícolas de 1978/79 a 1979/80, realizado no Instituto Agronômico, Campinas. O... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amostra; Tamanho; Milho; Cultivares; Asteca Prolífico VRPE VII; IAC Hmd 7974; IAC Maya XVI e HS 7777; Componentes de variância; Dano médio. |
| Ano: 1986 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051986000100008 |
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| Lourenção,André Luiz; Ungaro,Maria Regina Gonçalves. |
| The feeding preference of Chlosyne lacinia saundersii Doubleday & Hewitson, 1849 (Lepidoptera: Nymphalidae) in eighteen sunflower varieties was investigated in two experiments under field conditions, at Campinas, State of São Paulo, Brazil. Varietal differences were evaluated by visually estimating the percentage of foliar area eaten by the caterpillars. The results showed that the variety Conti GH-8121 had the highest percentage of defoliation (57.8%) and, the varieties Cargill 33 (20.0%) and Estanzuella 75 (19.0%), the lowest. |
| Ano: 1983 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051983000100029 |
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| Registros recuperados: 69 | |
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