Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-01-03T17:52:43Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) elizangela_souza_pereira.pdf: 689237 bytes, checksum: 793cce78db5facc852c0b626695e1359 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-01-31T16:46:41Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) elizangela_souza_pereira.pdf: 689237 bytes, checksum: 793cce78db5facc852c0b626695e1359 (MD5) / Made available in DSpace on 2017-01-31T16:46:41Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) elizangela_souza_pereira.pdf: 689237 bytes, checksum: 793cce78db5facc852c0b626695e1359 (MD5) Previous issue date: 2016 / O eucalipto pertence ao g?nero Eucalyptus spp. (Myrtaceae) possui in?meras esp?cies e variedades, prosperaram em diversos habitats. O controle qu?mico ? o principal m?todo de controle de lepid?pteros desfolhadores que atacam o eucalipto. O controle biol?gico ? uma alternativa para tentar reduzir a utiliza??o de produtos qu?micos nos sistemas florestais. O objetivo desta disserta??o foi avaliar a seletividade do inseticida Decis 25 CE? (deltametrina) ao parasitoide Palmistichus elaeisis Delvare & LaSalle (Hymenoptera: Eulophidae) e estudar os efeitos sobre os par?metros biol?gicos e os efeitos subletais ao longo de tr?s gera??es do parasitoide. O primeiro bioensaio foi realizado em delineamento inteiramente casualizado, com nove tratamentos e dez repeti??es. Os tratamentos foram constitu?dos pelo controle (?gua destilada) e as concentra??es de deltametrina: 0,64 mg i.a./L, 1,4 mg i.a./L, 3,10 mg i.a./L, 6,83 mg i.a./L, 15,03 mg i.a./L, 33,05 mg i.a./L, 72,7 mg i.a./L e 160 mg i.a./L aplicadas sobre o hospedeiro alternativo Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae). A deltametrina reduziu a taxa de parasitismo de P. elaeisis. Nas doses intermedi?rias (6,83 mg i.a./L ? 33,05 mg i.a./L) o parasitismo ficou em torno de 65%, e nas doses mais elevadas (72,7 mg i.a./L e 160 mg i.a./L ) o parasitismo decresceu a 10%. Houve uma redu??o significativa na taxa de emerg?ncia com o aumento da concentra??o do inseticida. N?o foram observadas diferen?as significativas na longevidade parental e da prole de P. elaeisis. O comprimento da c?psula cef?lica e da t?bia posterior apresentou diferen?as significativas. O segundo bioensaio foi realizado com tr?s tratamentos e vinte repeti??es. Os tratamentos foram constitu?dos pelo controle (?gua destilada), pela CL10= 11,12 mg de i.a/L e a CL50= 18, 54 mg de i.a/L. As pupas de T. molitor foram expostas ao inseticida atrav?s do m?todo de imers?o. Sessenta pupas de T. molitor foram mergulhadas por dois segundos em solu??o dilu?da para 100 mL com as concentra??es do inseticida. Na primeira gera??o F1 da CL10 o parasitismo foi de 55% e a CL50 ficou em 30%. Na segunda gera??o a taxa de parasitismo da CL10 foi de 70% e a da CL50 foi de 40%. Na ?ltima gera??o avaliada, n?o houve diferen?as significativas. A taxa de emerg?ncia das tr?s gera??es da CL10 apresentou diferen?as significativas. Entretanto, a emerg?ncia das gera??es F1, F2 e F3 da CL50 foram semelhantes entre si. A longevidade da prole de todas as gera??es avaliadas apresentou diferen?as significativas. A deltametrina afetou todos os par?metros avaliados de P. elaeisis, podendo ser considerado extremamente nocivo, comprovando que este inseticida n?o ? seletivo para esta esp?cie. Ap?s tr?s gera??es o parasitoide ainda ? afetado negativamente. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / Eucalyptus belongs to the genus Eucalyptus spp. (Myrtaceae) has many species and varieties thrive in different habitats. Chemical control is the main defoliating lepidopteran control method that attack eucalyptus. Biological control is an alternative to try to reduce the use of chemicals in forest systems. The aim of this work was to evaluate the selectivity of insecticide Decis 25 CE? (deltamethrin) to the parasitoid Palmistichus elaeisis Delvare & LaSalle (Hymenoptera: Eulophidae) and study the effects on biological parameters and sublethal effects over three generations of the parasitoid. The first bioassay was conducted in a completely randomized design with nine treatments and ten repetitions. The treatments were the control (distilled water) and the concentrations of deltamethrin: 0.64 mg ai / L, 1.4 mg ai / L, 3.10 mg ai / L, 6.83 mg ai / L, 15, 03 mg ai / L, 33.05 mg ai / L, 72.7 mg ai / L and 160 mg ai / L applied on the alternate host Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae). The deltamethrin reduced the rate of parasitism of P. elaeisis. In the intermediate doses (6.83 mg ai / L - 33.05 mg ai / L) parasitism was around 65%, and in higher doses (72.7 mg ai / L and 160 mg ai / L) parasitism decreased to 10%. There was a significant reduction in germination rate with increasing concentrations of the insecticide. No significant differences were observed in parental longevity and P. elaeisis offspring. The length of the head capsule and the posterior tibia showed significant differences. The second bioassay was conducted with three treatments and twenty repetitions. The treatments were the control (distilled water), the CL10 = 11.12 mg of a.i. / L and LC50 = 18, 54 mg of a.i. / L. The pupae of T. molitor were exposed to the insecticide through the immersion method. Sixty pupae of T. molitor were dipped for two seconds in dilute to 100 ml with the insecticide concentrations. In the first generation F1 CL10 parasitism was 55% and the LC50 was 30%. In the second generation CL10 parasitism rate was 70% and LC50 was 40%. In the last generation evaluated, no significant differences. The emergence rate of three generations of the CL10 showed significant differences. However, the emergence of F1, F2 and F3 CL50 were similar. The longevity of the offspring of all generations evaluated showed significant differences. The deltamethrin affected all parameters of P. elaeisis and can be considered extremely harmful, proving that this insecticide is not selective for this species. After three generations the parasitoid is still negatively affected.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:34Z No. of bitstreams: 5 38.pdf: 443796 bytes, checksum: 09ce470914751a428cfc76262fcd0741 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:43:45Z (GMT) No. of bitstreams: 5 38.pdf: 443796 bytes, checksum: 09ce470914751a428cfc76262fcd0741 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:43:45Z (GMT). No. of bitstreams: 5 38.pdf: 443796 bytes, checksum: 09ce470914751a428cfc76262fcd0741 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2011 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Diversas esp?cies do g?nero Sida s?o importantes plantas daninhas, principalmente em pastagens e culturas anuais. O conhecimento da anatomia e morfologia ? fundamental para o controle qu?mico das plantas, bem como o estudo dos mecanismos de penetra??o dos herbicidas. Caracter?sticas morfofisiol?gicas e composi??es qu?micas est?o diretamente relacionadas ? habilidade competitiva superior das culturas. O objetivo do trabalho foi fazer uma an?lise comparativa da produ??o de mat?ria seca, ?rea foliar, quantidade de cera epicuticular e estudar a anatomia foliar de tr?s esp?cies de Sida spp., em diferentes est?dios de desenvolvimento, visando obter informa??es de poss?veis barreiras ? penetra??o de agroqu?micos al?m de outras caracter?sticas envolvidas na capacidade competitiva pelos recursos naturais. A partir de criterioso trabalho fitossociol?gico em ?reas de pastagens, observou-se maior ?ndice de valor de import?ncia para as esp?cies Sida urens, Sida spinosa e Sida rhombifolia. Essas esp?cies foram coletadas em tr?s est?dios fenol?gicos caracterizados como V1: forma??o de at? 10 folhas completamente expandidas; V2: entre 11 folhas e antes do florescimento e R: ap?s florescimento. As plantas foram cortadas rente ao solo e levadas ao laborat?rio para quantifica??o da ?rea foliar, extra??o e quantifica??o da cera epicuticular, quantifica??o da mat?ria seca da parte a?rea e trabalhos anat?micos a partir de cortes e impress?es parad?rmicas das folhas. Verificou-se, para os est?dios V2 e R, maior n?mero de folhas para a esp?cie Sida rhombifolia, seguida por S. spinosa em V2 e S. urens em R. Esses resultados foram relativamente proporcionais ? ?rea foliar para todas as esp?cies. S. spinosa na fase vegetativa produziu os maiores valores de AFE, n?o se observando diferen?as entre as esp?cies avaliadas no est?dio caracterizado por R. Para a quantidade de cera por unidade de ?rea foliar, entre as esp?cies num mesmo est?dio, verificou-se diferen?a somente na fase reprodutiva, onde S. spinosa produziu valor superior. Entre os est?dios para cada esp?cie, observou-se decr?scimo na quantidade de cera com a idade das plantas. A esp?cie Sida spinosa apresentou maior densidade estom?tica na fase R. As tr?s esp?cies apresentaram menor densidade estom?tica, maior densidade tricom?tica e parede celular mais espessa no est?dio V2. Conclui-se que as tr?s esp?cies podem ser mais tolerantes ? entrada de produtos qu?micos na fase vegetativa e a esp?cie S. spinosa pode ser mais suscept?vel na fase reprodutiva. De maneira integrada, os resultados esclarecem melhor as diferen?as de sensibilidade das esp?cies a herbicidas e em rela??o ? habilidade competitiva frente ?s diferentes plantas cultivadas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT Several species of the genus Sida are important weeds, mainly in pastures and annual crops. The study of anatomy and morphology is essential to control chemical plants, as well as the study of mechanisms of herbicide penetration. Morphophysiological and chemical compositions are directly related to superior competitive ability of crops. The objective was to make a comparative analysis of the dry matter production, leaf area, amount of epicuticular wax and study the anatomy of three species of Sida spp. at different developmental stages in order to obtain information on possible barriers to the penetration of agrochemicals and other characteristics involved in competitive ability for resources. From phytosociological careful work in areas of pasture, there was a higher rate of importance value for species Sida urens, Sida rhombifolia and Sida spinosa. These species were collected at three growth stages V1 characterized as: training of up to 10 fully expanded leaves; V2: between 11 and leaves before flowering and R: after flowering. The plants were cut close to soil and taken to the laboratory for measurement of leaf area, wax extraction and quantification, quantification of the dry matter of shoots and anatomical works from paradermic cuts and impressions of leaves. There was, for stages V2 and R, more leaves for this species Sida rhombifolia, followed by S. spinosa in V2 and S. urens in R. These results were relatively proportional to leaf area for all species. S. spinosa in the vegetative phase produced the highest values of SLA, with no significant differences between the species assessed in stage characterized by R. For the amount of wax per unit leaf area between species in the same stadium, there was difference only in the reproductive phase, where S. spinosa produced a higher rating. Between stages for each species, there was a decrease in the amount of wax to plant age. The species Sida spinosa showed higher stomatal density in phase R. The three species had lower stomatal density, higher trichome density and thicker cell wall in the V2 stage. It is concluded that the three species may be more tolerant to input chemical species at vegetative and S. spinosa may be more susceptible in the reproductive phase. In an integrated way, the best results clarify the different sensitivity of species to herbicides and competitive ability in relation to the face of the different crops.

Folha de aprova??o ausente no trabalho. / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2016-12-15T16:26:43Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) danilo_cesar_de_abreu_costa.pdf: 2169605 bytes, checksum: 5ec8ad603683a6fdfbcbbb5e0eb92f2a (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-12-19T13:54:21Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) danilo_cesar_de_abreu_costa.pdf: 2169605 bytes, checksum: 5ec8ad603683a6fdfbcbbb5e0eb92f2a (MD5) / Made available in DSpace on 2016-12-19T13:54:21Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) danilo_cesar_de_abreu_costa.pdf: 2169605 bytes, checksum: 5ec8ad603683a6fdfbcbbb5e0eb92f2a (MD5) Previous issue date: 2016 / Companhia Energ?tica de Minas Gerais (Cemig) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A Reserva Particular do Patrim?nio Natural (RPPN) Fartura possui ?rea de 1,5 mil ha, dos quais aproximadamente 40 se encontram dominados por Pteridium aquilinum (samambaia). Esta esp?cie est? oferecendo grande risco a biodiversidade do local, visto que a mesma apresenta elevado potencial invasor e capacidade de competi??o, podendo inibir a regenera??o natural e atrasar a sucess?o por s?culos. Diante disso, objetivou-se com este trabalho definir t?cnicas de controle populacional de Pteridium aquilinum e induzir a regenera??o natural, assim como avaliar a resposta de algumas esp?cies de r?pido crescimento submetidas a doses crescentes de calc?rio, com potencial para serem utilizadas na restaura??o desta ?rea. O primeiro estudo foi desenvolvido em uma ?rea dominada por samambaia, utilizando delineamento em blocos casualizados arranjado em esquema fatorial 3 x 2, consistindo em tr?s t?cnicas de controle (ro?ada mecanizada, glyphosate e paraquat), removendo ou n?o a serrapilheira das parcelas. Foram alocadas parcelas de 10 x 10 m distribu?das em 3 blocos. Ap?s seis meses, foram avaliados a porcentagem de cobertura de samambaia e de radia??o fotossinteticamente ativa (RFA) incidente sobre o solo, assim como o n?mero de indiv?duos regenerantes e a diversidade para cada tratamento. Os resultados indicaram que o controle qu?mico, tanto por glyphosate quanto por paraquat, promoveu maior redu??o de samambaia e que a remo??o da serrapilheira favoreceu o ingresso de indiv?duos e o aumento da diversidade. O segundo estudo foi realizado em casa de vegeta??o, na Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, em delineamento em blocos casualizados com 3 repeti??es. Os tratamentos consistiram em elevar a satura??o por bases do substrato a 50, 70 e 90%, al?m do tratamento controle (sem corre??o). O substrato utilizado foi coletado na ?rea do primeiro estudo com o m?ximo de ra?zes de samambaia, corrigido com a quantidade de calc?rio determinada para cada tratamento e distribu?do em vasos de 10 dm?, onde as mudas de quatro esp?cies arb?reas foram plantadas. As esp?cies utilizadas foram: Anadenanthera colubrina (angico), Enterolobium contortisiliquum (orelha de macaco), Inga sessilis (ing?) e platycyamus regnelii (pau pereira). As vari?veis avaliadas foram di?metro e altura das mudas e a massa seca de samambaia. As esp?cies angico e orelha de macaco se mostraram sens?veis ? acidez do solo, sendo responsivas ao aumento da satura??o por bases. J? as esp?cies ing? e pau pereira s?o mais tolerantes ?s condi??es de acidez do solo, por?m, tamb?m obtiveram melhor desenvolvimento com a calagem. A samambaia apresentou aumento da massa seca com a eleva??o da satura??o por bases, mostrando que a calagem n?o ? uma pr?tica adequada para o controle dessa esp?cie. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, [2016]. / The Private Reserve of Natural Heritage (RPPN) Fartura has 1500 ha area of which approximately 40 are dominated by Pteridium aquilinum (bracken). This specie is offering great risk to the biodiversity of the site, since it has a high invasive potential and competitive ability and can inhibit natural regeneration and delay the succession for centuries. Therefore the aim of this study was to define techniques for promoting Pteridium aquilinum population control and induce natural regeneration, as well as to evaluate the response of some fast growing species exposed to increasing doses of limestone with potential to be used in the restoration of this area. The first study was conducted in an area dominated by bracken, using a randomized block design arranged in a factorial 3 x 2. It consisted of three control techniques (mechanized mowing, glyphosate and paraquat), removing or not litter from the plots. They were allocated 10 x 10 m plots into 3 blocks. After six months the bracken coverage percentage and photosynthetically active radiation (PAR) incident on the ground were evaluated,, as well as the number of regenerating individuals and diversity for each treatment. The results indicated that the chemical control both glyphosate as paraquat promoted greater reduction of bracken and the removal of litter favored the entry of individuals and increased diversity. The second study was conducted in a greenhouse at Federal University of Vales do Jequitinhonha and Mucuri - UFVJM under a randomized block design with three replications. The treatments consisted of raising the base saturation of the substrate 50, 70 and 90% beyond the control treatment (no correction). The substrate used was collected in the first study area with maximum bracken roots, corrected by the amount of certain limestone for each treatment and distributed in pots of 10 dm?, where the seedlings of four tree species were planted: Anadenanthera colubrina (angico), Enterolobium contortisiliquum (orelha de macaco), Inga sessilis (ing?) Platycyamus regnelii (pau pereira). The variables were diameter and seedling height and dry mass of bracken. The angico species and orelha de macaco were sensitive to soil acidity, being responsive to the increase in base saturation. The species ing? and pau pereira are more tolerant to soil acidity conditions, but they also had better development with liming. Bracken showed an increase in dry matter with increasing base saturation, showing that liming is not an appropriate practice for controlling these species.

Made available in DSpace on 2014-12-17T14:13:26Z (GMT). No. of bitstreams: 1 EduardoJGS.pdf: 119973 bytes, checksum: dbdb322fee12ba3edd9d72e5446d9c91 (MD5) Previous issue date: 2009-09-23 / The science of Dentistry wishes obtains the ideal solution for the dental plaque chemical control. This research evaluated antimicrobial action capacity in calcium hydroxide and tergentol various solutions starting for the CHD 20, a root canals irrigating solution with a reason of 80% calcium hydroxide saturated solution and 20% tergentol detergent with the aim of evaluate this drug mouth rinse indication with prevention or combat objective for dental caries and periodontal diseases. Antibiogram disks and biofilm tests were accomplished for the microorganisms: Streptococcus mutans, Streptococcus sanguis, Streptococcus sobrinus and Lactobacillus casei. Different reasons of detergent for the calcium hydroxide saturated solution, tergentol and distillated water solution, 0,12% clorhexydine digluconate solution was positive control and distillated water was negative control. The results showed better performance of clorhexydine in relation to calcium hydroxide directing to not accept this (CHD20) as mouth rinse solution / Na busca pela ci?ncia odontol?gica de se chegar ao composto que possa ser considerado o agente ideal para o controle qu?mico do biofilme dental foi idealizado este estudo. Avaliou-se a capacidade antimicrobiana in vitro de diferentes solu??es a base de hidr?xido de c?lcio e tergentol partindo em princ?pio do HCT 20, solu??o irrigadora dos canais radiculares composta por 80% da solu??o saturada de hidr?xido de c?lcio (?gua de cal) e 20% do detergente tergentol buscando verificar sua poss?vel indica??o como solu??o para bochechos, visando preven??o ou combate a doen?as como c?rie dent?ria e doen?a periodontal. No laborat?rio de microbiologia do Departamento de Odontologia da UFRN, foram realizados testes em discos de antibiograma para os microrganismos: Streptococcus mutans, Streptococcus sanguis, Streptococcus sobrinus e Lactobacillus casei. Bem como em bact?rias formadoras de biofilme para os mesmos, ? exce??o do L. casei. Estipulou-se diferentes concentra??es de tergentol para a ?gua de cal, al?m do tergentol em ?gua destilada, usou-se digluconato de clorexidina a 0,12% como controle positivo e ?gua destilada como controle negativo. Os resultados mostraram desempenho inferior das solu??es a base de Ca(OH)2 em rela??o ? clorexidina frente a estes microrganismos e ? metodologia empregada, direcionando pois, para a n?o indica??o do uso do HCT 20 como colut?rio bucal