RESUMO: A criopreservação de germoplasma vegetal em temperaturas ultrabaixas é uma alternativa para o armazenamento em longo prazo de sementes do gênero Coffea sp. Entretanto, para que essa técnica apresente sucesso, a realização de pesquisas que garantam a manutenção da integridade celular em todas as etapas do processo é de fundamental importância. O objetivo com o presente trabalho foi investigar protocolos de criopreservação validados para sementes de Coffea arabica L., avaliando separadamente, os efeitos sobre as características fisiológicas e bioquímicas das sementes, em cada etapa do processo. As sementes foram secadas em sílica gel ou em solução salina saturada, submetidas ou não ao pré-resfriamento em biocongelador, em seguida imersas no nitrogênio e reaquecidas em banho-maria. Após cada uma dessas etapas, a qualidade fisiológica e bioquímica das sementes foi determinada. O pré-resfriamento é uma etapa que pode ser dispensada na criopreservação de sementes de Coffea arabica, sendo mais indicada a imersão direta em nitrogênio líquido. Sementes de Coffea arabica L. toleram a criopreservação após secagem rápida em sílica gel até teores de água de 17 ou 20% (wb), com maior sobrevivência a 17%. A atividade das enzimas catalase, polifenoloxidase e peroxidase são indicadoras da qualidade de sementes de Coffea arabica L. submetidas à criopreservação. RESUMO sp Entretanto sucesso importância L separadamente saturada préresfriamento pré resfriamento biocongelador banhomaria. banhomaria banho maria. maria banho-maria determinada líquido 1 20 wb, wb , (wb) 17% catalase 2 (wb

ABSTRACT: The cryopreservation of plant germplasm at ultralow temperatures is an alternative technique for the long-term storage of seeds of the genus Coffea sp. However, for this technique to be successful, cell integrity must be maintained at all stages of the process on the basis of scientific research. The present study investigated validated cryopreservation protocols for Coffea arabica L. seeds and evaluate the effects on the physiological and biochemical characteristics of the seeds at each stage of the process. Seeds were dried on silica gel or with saturated saline solution, precooled or not in a biofreezer, immersed in nitrogen, and reheated in a water bath. After each of these steps, the physiological and biochemical quality of the seeds was determined. Pre-cooling is a step that can be dispensed with in the cryopreservation of Coffea arabica seeds, direct immersion in liquid nitrogen being more indicated. Coffea arabica L. seeds tolerate cryopreservation after rapid drying in silica gel up to water contents of 17 or 20% (wb), with greater survival at 17%. The enzyme activities of catalase, polyphenol oxidase and peroxidase are indicators of the quality of C. arabica L. seeds subjected to cryopreservation. ABSTRACT longterm long term sp However successful research L solution biofreezer bath steps determined Precooling Pre cooling indicated 1 20 wb, wb , (wb) 17% catalase C 2 (wb

Resumo: Ferramentas rápidas de fenotipagem são cruciais para a seleção de progênies em programas de melhoramento genético. Esta pesquisa foi conduzida com o objetivo de avaliar a possibilidade de uso da simulação de estresse em laboratório como forma de distinguir fenótipos de milho quanto à tolerância à seca. Foram conduzidos inicialmente dois experimentos: um em que avaliou-se a emergência de plântulas e seu crescimento em areia sob diferentes capacidades de campo; e um segundo com o uso de solução de PEG a -0.6 Mpa para umedecer o papel de germinação. Estes experimentos foram usados para distinguir características de duas linhagens contrastantes quanto à tolerância à seca: linhagem 57 - sensível e 91 - tolerante. No próximo experimento, foram produzidas sementes hibridas a partir do cruzamento de ambas as linhagens nas gerações F1; F2 e F2:3 as quais foram colocadas para germinar em papel umedecido com solução de PEG a -0.6 MPa com posterior avaliação do crescimento das sementes através da análise de imagens com o sistema GroundEye®. Pelos resultados dessa pesquisa foi possível distinguir tanto as características das linhagens parentais quanto as progênies hibridas quanto à tolerância à seca. Neste sentido, pode-se concluir que a simulação do estresse associada à análise de imagens pode ser uma ferramenta útil para fenotipagem de milho. Resumo genético seca avaliouse avaliou se campo 0.6 06 0 6 -0. germinação 5 9 tolerante experimento F1 F F23 3 F2: GroundEye GroundEye® sentido podese 0. -0

ABSTRACT: Faster phenotyping tools are crucial for field progeny selection. We conducted research comparing two water deficit simulation methods on contrasting cultivars for water deficit tolerance. In a first step, we conducted two experiments: one for seed germination in sand at 10% and 70% water retention capacity, being analyzed seedling emergence and growth; other for seed germination in stress simulation by moistening the germination paper with PEG solution at -0.6 MPa, being analyzed seed germination. These experiments were used to distinguish characteristics of two maize lineages with different response to drought, being 57 - sensitive and 91 - tolerant. After that, we produced hybrid progenies from these lines at generations F1, F2, and F2:3 and applied the stress simulation by moistening the germination paper with -0.6 MPa of PEG solution. The seedling size was analyzed trough image analysis by the GroundEye® system. We could distinguish both lines and its hybrids through the stress simulation and image analysis. The results indicate that maize cultivars can be phenotyped for water deficit tolerance either 5 days postsowing through stress simulation or via image analysis of root length from seedlings germinated under -0.6 MPa. This method provides faster, more accurate, and more cost-effective methods for assessing water deficit tolerance in maize cultivars. ABSTRACT selection step 10 70 capacity growth 0.6 06 0 6 -0. drought 9 tolerant F1 F F2 F23 3 F2: GroundEye system faster accurate costeffective cost effective 1 7 0. -0

ABSTRACT In economic terms the lettuce (Lactuca sativa L.) is considered relevant among the vegetable crops. The diversity of cultivars available today, their varying climatic requirements and climatic differences between the different producing regions, lettuce may present seasonal variations in supply and prices during agricultural years. The aim of this work was to study the seasonal variation of lettuce supply and prices practiced in the state of Minas Gerais, in the period between January 2012 and December 2017. The data were obtained from CeasaMinas and processed by the centralized moving geometric mean methodology, obtaining the minimum, average and maximum indexes for supply and prices practiced. Lettuce showed a marked seasonal variation in supply and prices, and Ceasa Great-BH presented the highest seasonal variation of price and supply indices practiced. The variations in supply and prices in the hot and rainy season, in relation to the dry season, are markedly more accentuated. It was observed that there is a relationship that follows the “Law of supply”, where in the cold periods of the year the lowest prices associated with the lowest offers were presented and in the hot periods of the year, the highest prices associated with the largest offers were presented. Lactuca L. L crops today regions years Gerais 201 2017 methodology minimum GreatBH Great BH season accentuated Law supply, , supply” 20 2

RESUMO A alface silvestre (Lactuca aff. canadensis L.), pertencente à família Asteraceae, ocorre de forma subespontânea no Brasil e pode ser originária da África, Ásia, Europa e América do Norte. Popularmente conhecida como alface canadense, é um vegetal folhoso não convencional. Os estudos sobre esta espécie são escassos no Brasil e seu nome científico é debatido entre especialistas. Possui alta variabilidade morfológica e classificação botânica controversa. Este estudo caracterizou os estômatos, organizou o cariótipo e determinou o conteúdo de DNA nuclear de quatro morfotipos de alface silvestre para facilitar a classificação correta. O material genético utilizado foi adquirido do germoplasma vegetal não convencional da UFLA. As folhas dos morfotipos de alface silvestre são hipoanfiestomáticas com maior número de estômatos na epiderme abaxial. Houve semelhanças entre os morfotipos (verde e roxo) e entre os tipos roxos lisos (folha estreita e folha larga) quanto ao número e tamanho dos estômatos. Nenhuma variação foi encontrada no número de cromossomos (2n = 18) ou no conteúdo de DNA entre os quatro morfotipos. A separação dos morfotipos de alface silvestre não correspondeu à classificação morfológica nem aos dados cariológicos. Os quatro morfotipos avaliados foram colocados sob a mesma espécie, e os resultados obtidos quando comparados com outros estudos nos levaram a inferir que os quatro morfotipos de Lactuca selvagem pertenciam à espécie L. indica e não a L. canadensis como se supunha anteriormente. Investigações adicionais podem fornecer conhecimento sobre a história evolutiva desta espécie. aff L., L , L.) Asteraceae África Ásia Norte canadense especialistas controversa correta UFLA abaxial verde roxo larga 2n n 18 cariológicos anteriormente 1

ABSTRACT Wild lettuce (Lactuca aff. canadensis L.), belonging to the Asteraceae family, occurs subspontaneously in Brazil and may originate from Africa, Asia, Europe and North America. Popularly known as Canada lettuce, it is an unconventional leafy vegetable. Studies on this species are scarce in Brazil, and its scientific name is debated among experts. It has high morphological variability and controversial botanical classification. This study characterized the stomata, organized the karyotype, and determined the nuclear DNA content of four morphotypes of wild lettuce to facilitate correct classification. The genetic material used was acquired from the non-conventional vegetable germplasm in UFLA. The leaves of wild lettuce morphotypes are hypoamphiestomatic with a greater number of stomata in the abaxial epidermis. There were similarities between the morphotypes (green and purple) and between the smooth purple types (narrow leaf and broad leaf) for the number and size of stomata. No variation was found in the number of chromosomes (2n = 18) or DNA content among the four morphotypes. The separation of the morphotypes of wild lettuce did not match the morphological classification or the karyological data. The four morphotypes evaluated were placed under the same species, and the results obtained when compared to other studies led us to infer that the four morphotypes of wild Lactuca belonged to the species L. indica and not L. canadensis as previously assumed. Further investigation may provide insights into the evolutionary history of this species. aff L., L , L.) family Africa Asia America experts karyotype nonconventional non conventional UFLA epidermis green narrow 2n n 18 data assumed 1

RESUMO: Atualmente a demanda não é somente para híbridos de milho mais produtivos, mas também que apresentem alta qualidade fisiológica de sementes. A qualidade de sementes é considerada o somatório dos atributos genéticos, físicos, fisiológicos e sanitários que interferem diretamente no vigor das plantas. Objetivou-se avaliar os parâmetros fisiológicos de sementes dos parentais e híbridos de milho obtidos, por meio de análises fisiológicas e técnicas de análise de imagens, bem como estudar a viabilidade da seleção simultânea para a qualidade fisiológica de sementes e produtividade de grãos. Foram realizados dois experimentos, um à campo e o outro em laboratório. Os parâmetros avaliados em campo foram dias para o florescimento feminino, dias para o florescimento masculino, inserção da 1ª espiga, altura de plantas e produtividade de grãos. Para a qualidade fisiológica foram obtidos os atributos de germinação aos quatro dias, germinação aos sete dias, vigor pelo teste de frio, índice de velocidade de emergência e a razão do comprimento da raiz pelo comprimento da parte aérea através do GroundEye®. Obteve-se a heterose para os caracteres agronômicos e fisiológicos. O desdobramento dos efeitos por meio do contraste entre híbridos e recíprocos permitiu testar o efeito materno. As magnitudes da heterose permitem inferir que quanto maior o número de ciclos seletivos e de recombinação, em média maior será a heterose para os caracteres produtividade de grãos e germinação das sementes. A resposta correlacionada indica que híbridos intervarietais mais produtivos apresentam melhor qualidade fisiológica de sementes. RESUMO genéticos físicos Objetivouse Objetivou se imagens experimentos laboratório feminino masculino ª espiga frio GroundEye GroundEye® Obtevese Obteve materno recombinação

ABSTRACT: Currently, the demand is not only for more productive corn hybrids, but also for those with high physiological seed quality. Seed quality is considered the sum of genetic, physical, physiological and sanitary attributes that directly interfere in plant vigor. The objective of this study was to evaluate the physiological parameters of the seeds of parents and maize inter varietal hybrids obtained in a reciprocal recurrent selection program through physiological and image analysis techniques and either to study the feasibility of simultaneously selecting for seed physiological quality and grain yield. Two experiments were performed, one in the field and the other in the laboratory. The evaluated traits in the field were days of female flowering, days of male flowering, insertion of the 1st ear, plant height and grain yield. For the physiological quality, the attributes of germination at four days, germination at seven days, vigor by the cold test, emergence speed index, and the ratio of the root length to shoot length were obtained using GroundEye®. Heterosis was measured for the agronomic and physiological traits. Through the contrast between the inter varietal crosse hybrids and reciprocals we measured the maternal effect. The magnitudes of heterosis allowed us to infer that as greater as the number of selection and recombination cycles, on average, greater heterosis for the traits grain yield and seed germination. The correlated response indicated that, high yield intervarietal hybrids have better seed physiological quality. ABSTRACT Currently genetic physical performed laboratory flowering st ear test index GroundEye GroundEye® effect cycles average

RESUMO: O bioma Caatinga é único no Brasil, com características ambientais desfavoráveis à sobrevivência de Leptospira spp. Porém, estudos recentes demonstraram alta positividade na PCR (reação em cadeia da polimerase) em pequenos ruminantes. Não existem estudos para a infecção por Leptospira spp. baseados em cálculo amostral em suínos na Caatinga. O objetivo deste estudo foi avaliar a importância dos suínos na disseminação da leptospirose no bioma Caatinga. Foram coletadas 200 amostras biológicas (urina, sangue, fluido vaginal e tecidos do trato reprodutivo e urinário) de 40 porcas abatidas e realizados testes SAM (teste de soroaglutinação microscópica) e PCR para detecção de anticorpos anti-Leptospira spp. e DNA do agente, respectivamente. A análise sorológica mostrou taxa de positividade de 5% (2/40) e a PCR identificou o DNA de Leptospira spp. em 62,5% (25/40) dos animais. Apenas 2,5% (1/40) dos animais foram positivos para ambas as técnicas. Os sorogrupos detectados foram Australis (50%) e Bataviae (50%), com títulos de anticorpos de 25 e 50. O DNA de Leptospira spp. foi detectado em 40% (16/40) das amostras do trato reprodutivo, 32,5% (13/40) do trato urinário, 32,5% (13/40) do fluido vaginal e 30% (12/40) de urina. Não houve concordância (Kappa <0) entre amostras de PCR do trato genital vs. trato urinário ou resultados sorológicos. O sequenciamento genético de uma amostra de urina e de uma amostra de tecido do trato urinário revelou 99% de identidade com L. borgpetersenii. Os resultados obtidos indicam que a leptospirose representa uma preocupação em suínos no contexto da Caatinga, com alta prevalência de infecção detectada por diferentes métodos diagnósticos, bem como análises moleculares revelaram proporção considerável de animais infectados. Os resultados enfatizam a importância de uma abordagem multifacetada no diagnóstico da leptospirose em suínos, com foco no uso de amostras do trato genital para o diagnóstico da leptospirose nesta espécie animal, fornecendo informações valiosas para o controle e prevenção desta doença em animais e no contexto zoonótico. Por fim, a detecção de leptospiras no trato genital indica possibilidade de transmissão macho-fêmea no contexto venéreo. RESUMO Brasil spp Porém reação polimerase ruminantes 20 urina, (urina sangue 4 teste microscópica antiLeptospira anti agente respectivamente 5 2/40 240 2 (2/40 625 62 62,5 25/40 2540 (25/40 2,5 1/40 140 1 (1/40 técnicas 50% 50 (50% 50%, , 16/40 1640 16 (16/40 325 32 32,5 13/40 1340 13 (13/40 30 12/40 1240 12 (12/40 Kappa <0 0 vs sorológicos 99 L borgpetersenii diagnósticos infectados animal zoonótico fim machofêmea macho fêmea venéreo 2/4 24 (2/4 6 62, 25/4 254 (25/4 2, 1/4 14 (1/4 (50 16/4 164 (16/4 3 32, 13/4 134 (13/4 12/4 124 (12/4 < 9 2/ (2/ 25/ (25/ 1/ (1/ (5 16/ (16/ 13/ (13/ 12/ (12/ (2 (25 (1 ( (16 (13 (12

ABSTRACT: The Caatinga biome is unique to Brazil, with unfavorable environmental characteristics for the survival of Leptospira spp. However, recent studies have shown high positivity at PCR (polymerase chain reaction) in small ruminants. There are no Leptospira spp. studies based on sample calculation in pigs in the Caatinga. The aim of this study was to assess the importance of pigs in the spread of leptospirosis in the Caatinga biome. Overall, 200 biological samples (urine, blood, vaginal fluid, and tissues of reproductive and urinary tracts) were collected from 40 slaughtered sows, and MAT (microscopic agglutination test) and PCR tests were carried out to detect anti-Leptospira spp. antibodies and the agent’s DNA, respectively. The serological analysis showed a positivity rate of 5% (2/40), and the PCR identified Leptospira spp. DNA in 62.5% (25/40) of the animals. Only 2.5% (1/40) of the animals were positive for both techniques. The detected serogroups were Australis (50%) and Bataviae (50%), with antibody titers of 25 and 50. Leptospira spp. DNA was detected in 40% (16/40) of the reproductive tract samples, 32.5% (13/40) of the urinary tract, 32.5% (13/40) of the vaginal fluid and 30% (12/40) of the urine. There was no agreement (Kappa <0) between PCR samples from the genital tract vs. urinary tract or serological results. Genetic sequencing of one urine and one urinary tract tissue sample revealed 99% identity with L. borgpetersenii. The results indicate that leptospirosis is a concern in pigs in the context of Caatinga, with a high prevalence of infection detected by different diagnostic methods. The molecular analysis revealed a considerable proportion of infected animals. The findings emphasize the importance of a multifaceted approach in the diagnosis of leptospirosis in pigs, with a focus on the use of genital tract samples for the diagnosis of leptospirosis in this animal species, providing valuable insights for the control and prevention of this disease in both animals and the zoonotic context. Finally, the detection of leptospires in the genital tract indicates a possibility of male-female transmission in the venereal context. ABSTRACT Brazil spp However polymerase reaction ruminants Overall 20 urine, (urine blood tracts 4 sows microscopic test antiLeptospira anti agents agent s respectively 5 2/40, 240 2/40 , 2 (2/40) 625 62 62.5 25/40 2540 (25/40 2.5 1/40 140 1 (1/40 techniques 50% 50 (50% 50%, 16/40 1640 16 (16/40 325 32 32.5 13/40 1340 13 (13/40 30 12/40 1240 12 (12/40 Kappa <0 0 vs 99 L borgpetersenii methods species Finally malefemale male female 24 2/4 (2/40 6 62. 25/4 254 (25/4 2. 1/4 14 (1/4 (50 16/4 164 (16/4 3 32. 13/4 134 (13/4 12/4 124 (12/4 < 9 2/ (2/4 25/ (25/ 1/ (1/ (5 16/ (16/ 13/ (13/ 12/ (12/ (2/ (25 (1 ( (16 (13 (12 (2

RESUMEN Objetivos. Comprender las experiencias de usuarios nuevos y continuadores de los Centros de Salud Mental Comunitaria (CSMC) de Lima y Callao, y de sus familiares, en relación a la atención en salud mental que recibieron durante la pandemia de la COVID-19. Materiales y métodos. Estudio cualitativo realizado entre septiembre del 2021 y febrero del 2022, en el que se entrevistó a 24 usuarios y familiares que interactuaron con los servicios brindados por tres CSMC de Lima y uno del Callao, durante la pandemia de la COVID-19. Se realizó un análisis temático de las entrevistas transcritas. Resultados. Los informantes percibieron que la pandemia exacerbó los síntomas de las personas con problemas de salud mental. Durante la pandemia, las atenciones de salud mental se apoyaron en el uso de tecnología, principalmente de llamadas telefónicas, las que sirvieron para monitorear el estado emocional y el tratamiento farmacológico de los usuarios, así como para programar y recordar citas. Los usuarios destacan que las llamadas telefónicas frecuentes les hicieron sentirse acompañados y resaltan el compromiso de los trabajadores de los CSMC. Como dificultades, reportan el incremento en la demanda de atención, problemas para acceder a videollamadas, y menor calidad en las atenciones virtuales. Conclusiones. La COVID-19 impactó emocionalmente a las personas con problemas de salud mental, a su vez, los servicios de los CSMC vieron afectada la modalidad (presencial o virtual), recursos, frecuencia, tiempo y calidad de la atención, encontrando limitaciones y beneficios en el uso de la tecnología.

ABSTRACT Objective. To understand the experiences of new and continuing users of Community Mental Health Centers (CMHC) of Lima and Callao, and their relatives, regarding the mental health care they received during the COVID-19 pandemic. Materials and methods. Qualitative study conducted between September 2021 and February 2022, in which we interviewed 24 users and family members who interacted with the services provided by three CMHCs in Lima and one in Callao during the COVID-19 pandemic. We carried out a thematic analysis of the transcribed interviews. Results. Participants perceived that the pandemic exacerbated the symptoms of people with mental health problems. During the pandemic, mental health care relied on the use of technology, mainly telephone calls, which were used to monitor the emotional state and pharmacological treatment of users, as well as to schedule and remember appointments. The users emphasized that frequent telephone calls made them feel accompanied and highlighted the commitment of the CMHC workers. Among the difficulties, they reported an increase in the demand for care, problems in accessing video calls, and low quality in virtual care. Conclusions. COVID-19 had an emotional impact on people with mental health problems; in turn, CMHC services were affected by the type of care (face-to-face or virtual), resources, frequency, time and quality of care, finding limitations and benefits in the use of technology.

ABSTRACT Species of the Amaranthus genus are very versatile and have potential for the application in the development of commercial products. The near infrared spectroscopy (NIR) is an efficient tool that can help in the quality control of products, quickly and non-destructive to the sample. The goal of this study was to carry out the distinction of seed and oils of different Amaranthus species using the near infrared spectroscopy. Three species were used: A. viridis L., A. hybridus L. e Amaranthus sp. (commercial). The spectra acquired from the sample using the near infrared spectroscopy were submitted to the partial least squares discriminant analysis (PLS-DA) and to the principal component analysis (PCA). Through PCA, it was possible to differentiate the Amaranthus species both for seeds and oils. Through PLS-DA, it was possible to predict the classes of the species with high degree of correct classification, with 96.67% of correct classifications for seeds and 98.89% for oil. Thus, with the use of the near infrared spectroscopy associated with the multivariate statistical analysis, it is possible to classify the different Amaranthus species, especially when using the oil. products NIR (NIR nondestructive non destructive used A L sp commercial. . (commercial) PLSDA PLS DA (PLS-DA PCA. PCA (PCA) PLSDA, DA, PLS-DA classification 9667 96 67 96.67 9889 98 89 98.89 oil Thus (commercial (PCA 966 9 6 96.6 988 8 98.8 96. 98.

ABSTRACT Phosphites can be considered an additional strategy to be included in disease management programs. Therefore, this study aims to evaluate the application of potassium phosphite (KPhi) in common bean seeds, in the reduction of intensity of root rot (Rhizoctonia solani) and in the compatibility with Rhizobium tropici, a nitrogen-fixing bacterium. The emergence speed index (ESI) and the percentage of total emergence were evaluated in seeds inoculated with R. solani and treated with KPhi. The number of nodules per root system, dry nodule mass, quantified the compatibility Phi x R. tropici, dry mass, nitrogen content, and nitrogen accumulation in the shoots. KPhi promoted a higher ESI and increase in plant stand compared to the control treatment. The number of nodules formed and the nitrogen content and accumulation in the KPhi treatments were similar to control (seeds inoculated with R. tropici). Thus, the treatment of seeds with KPhi provides control of R. solani and is compatible with R. tropici. programs Therefore (KPhi Rhizoctonia tropici nitrogenfixing fixing bacterium (ESI R system mass shoots . tropici) Thus

Abstract Storage is important in the coffee post-harvest. Determining the maximum period that coffee can remain storaged is important aiming to reduce losses in quality and, consequently, allow the producer to achieve maximum profitability. The aim was to determine the suitable storage period for natural and fully washed coffees, under different conditions. Beans were dried to 11% moisture content after dry processing (natural coffee, dry cherry coffee) and wet processing (parchment coffee, fully washed). Before storage, part of the coffee was hulled and part was not. The coffee was stored under refrigerated air (10ºC and 50% relative humidity) or in an environment at 25ºC. In the periods of 0, 3, 6, and 12 months, samples were taken for sensory, electrical conductivity and tetrazolium evaluation. Refrigerated environment favors conservation of sensory and physiological quality of the natural hulled coffee beans and fully washed coffee. Hulled beans of natural and fully washed coffee stored under refrigerated conditions have the initial quality conserved for up to 12 months and in non-controlled environmental, for up to 3 months. Mechanical damage caused by hulling, associated with the lack of tissue fruit parts, contributes to reduction hulled coffee quality in storage, regardless of the processing. postharvest. postharvest post harvest. harvest post-harvest consequently profitability coffees 11 parchment washed. . washed) not 10ºC ºC 50 humidity 25ºC 0 6 1 evaluation noncontrolled non controlled environmental hulling parts 5

ABSTRACT Studies have shown the synergism of co-inoculation with symbiotic and non-symbiotic N2-fixing bacteria, efficiently contribute to plant development. However, for crops such as forage legumes, data on the use of co-inoculation are still incipient, requiring studies to identify the contribution of this technique for application in pasture areas, thus ensuring greater sustainability. The objective of this study was to evaluate the effects of co-inoculation of Azospirillum brasilense (Ab-V5) and native rhizobia isolated from two forage legumes, Crotalaria spectabilis and Lupinus albus. Two experiments were installed in pots with 8dm3. Both were conducted in a randomized block design (DBC) with four replications and an 8 x 2 factorial scheme with six bacterial strains and two control treatments without inoculation (with presence or absence of mineral nitrogen), co-inoculated or not with the Ab-V5 strain. Plants were cultivated until the time of flowering when shoot (SDM) and root dry matter (RDM), number (NN) and nodule dry matter (NDM), and relative symbiotic efficiency (RSE) were evaluated. Isolates 05-21 and 06-03, for C. spectabilis and L. albus, respectively, indicated higher potential to promote plant growth when co-inoculated with Ab-V5, showing potential to act as substitutes for nitrogenous chemical fertilizers, reducing costs and increasing the sustainability of production. coinoculation co nonsymbiotic non N2fixing Nfixing N2 fixing N bacteria development However legumes incipient areas AbV5 AbV Ab V5 V (Ab-V5 albus 8dm3 dm DBC (DBC nitrogen, nitrogen , nitrogen) coinoculated inoculated Ab-V strain SDM (SDM RDM, RDM (RDM) NN (NN NDM, NDM (NDM) RSE (RSE evaluated 0521 05 21 05-2 0603, 0603 06 03, 03 06-03 C L respectively AbV5, V5, fertilizers production (Ab-V 8dm (RDM (NDM 052 0 05- 060 06-0 06-

Abstract Aiming to compare and update the sand fly fauna of São José farm, Carmo District, Rio de Janeiro State, Brazil, and considering the environmental changes occurred, the biology and ecology of the local sandfly species were examined twelve years later as a complementary study carried. Captures were made in the intra, peridomicile and in the woods, from 6 p.m. to 6 a.m. 1210 sandflies of fifteen species of the Lutzomyia were captured: L. intermedia, L. whitmani, L. lenti, L. aragaoi, L. cortelezzii, L. quinquefer, L. carrerai carrerai, L. davisi, L. lanei, L. fischeri, L. monticola, L. ayrozai, L. sordellii, L. lutziana, L. sp and two species of the Brumptomyia Kind: B. brumpti and B. cardosoi. In 1994 and 1995 were collected 4603 samples from six species of the former genus and three of the second. Lutzomyia intermedia was predominant, in the intra and in the peridomicile, in both periods. B. bumpti, collected only in the recent prevailed i n the woods. Six species implicated as vector of Leishmania: L. intermedia, L. whitmani, L. ayrozai, L. fischeri, L. davisi, L. carrerai carrerai and L. migonei have been collected in the area, however, this last only in the previous study.

Resumo: O tamanho das sementes de soja é um fator que ainda necessita de estudos, pois a relação tamanho das sementes, qualidade fisiológica, estabelecimento e produtividade no campo apresenta controvérsias. Objetivou-se avaliar os efeitos do tamanho das sementes no estabelecimento da cultura da soja e na qualidade fisiológica das sementes. Em campo utilizou-se fatorial 2 x 3 x 3, sendo, duas cultivares (M 5947 IPRO e 59HO124 IPRO), três tamanhos de sementes (5.5, 6.0 e 6.5 mm) e três estandes de plantas (280.000, 320.000 e 360.000 plantas.ha-1). Foram avaliados características agronômicas e produtividade de grãos. Após a colheita, as sementes das parcelas com população de 320.000 plantas foram classificadas por tamanho utilizando-se peneiras com crivos circulares, 5.5 mm, 6.0 mm, 6.5 mm e 7.0 mm de diâmetro. Para a avaliação da qualidade fisiológica, considerou-se esquema fatorial 2 x 4, sendo, 2 cultivares e 4 tamanhos de sementes. Avaliou-se germinação, emergência em canteiro, envelhecimento acelerado, matéria seca de plântulas e índice de velocidade de emergência. Sementes menores dão origem a plantas mais baixas e com menor altura de inserção do primeiro legume. Sementes maiores apresentam maior qualidade fisiológica. A cultivar M 5947 IPRO apresentou melhores desempenho e qualidade de sementes.

Abstract: The size of soybean seeds needs further study because its relationships with physiological quality, field establishment, and yield are controversial. The aim of this study was to evaluate the effects of seed size on soybean establishment and seed physiological quality. In the field, a 2x3x3 factorial design was used, with two cultivars (M 5947 IPRO and 59HO124 IPRO), three seed sizes (5.5, 6.0, and 6.5 mm), and three sowing densities (280,000, 320,000, and 360,000 plants.ha-1). Agronomic traits and grain yield were evaluated. After harvest, only seeds from plots with a population of 320,000 plants were classified by size using circular sieves with 5.5-mm, 6.0-mm, 6.5-mm, and 7.0-mm mesh sizes. For the evaluation of physiological quality, a 2x4 factorial design was applied, with two cultivars and four seed sizes. Germination, seedling emergence, accelerated aging, seedling dry matter, and emergence speed index were evaluated. Smaller seeds gave rise to shorter plants with a lower first pod insertion height. Larger seeds had higher physiological quality. The M 5947 IPRO cultivar showed better seed performance and quality.

Resumo: A seleção e utilização de genótipos de soja com sementes de alta qualidade fisiológica é importante para possibilitar maior probabilidade de estabelecimento e sucesso da cultura em campo, e, consequentemente, alcançar altas produtividades. Objetivou-se neste trabalho avaliar o controle genético da qualidade fisiológica de sementes de soja a partir de um dialelo parcial. Seis cultivares de soja, previamente selecionadas, grupo 1 (CD 201, CA 115, MS 8400) e grupo 2 (CD 202, Syn 1263, Syn 1279), foram intercruzadas utilizando-se um esquema de dialelo parcial, gerando 24 tratamentos. Sementes dessas cultivares e destes cruzamentos foram avaliadas quanto à qualidade fisiológica das sementes a partir de testes de germinação, primeira contagem de germinação, envelhecimento acelerado, emergência e índice de velocidade de emergência de plântulas. Foram avaliados os teores de lignina nos tegumentos das sementes de soja. Foram analisados os efeitos da capacidade geral (CGC) e específica de combinação (CEC) e os efeitos recíprocos. Há efeito significativo dos genes aditivos e não aditivos para os caracteres de qualidade de sementes, e efeito pronunciado de recíprocos, o que sugere a presença do efeito materno. Não há correlação entre o teor de lignina e testes fisiológicos para os genótipos estudados.

Abstract: The selection of soybean genotypes with seeds of high physiological quality is key to increasing the likelihood of establishment and success in the field and thus reaping higher yields. The aim of this study was to evaluate the genetic control of the physiological quality of soybean seeds from a partial diallel cross. Six previously selected soybean cultivars, group 1 (CD 201, CA 115, MS 8400) and group 2 (CD 202, Syn 1263, Syn 1279), were intercrossed by a partial diallel cross, totalizing 24 treatments. Seeds from these cultivars and crosses were evaluated for seed physiological quality based on germination tests, first germination count, accelerated aging, seedlings emergence, and emergence speed index. The lignin content in the soybean seed coat was evaluated. The effects on general and specific combining ability and reciprocal effects were analyzed. There were significant additive and non-additive effects of the genes on the seed quality traits and pronounced effects on the reciprocal traits, which suggest the presence of a maternal effect. Lignin content was not correlated with the physiological test results in the studied genotypes.

Resumo: Sementes de café são sensíveis à dessecação e utilizadas ou armazenadas com diferentes umidades, podendo interferir nos resultados da avaliação da qualidade. O objetivo do trabalho foi avaliar as alterações no perfil proteico em gel de eletroforese em sementes de café com diferentes umidades e submetidas ou não à liofilização. Foram utilizados dois lotes de café arábica, sendo um de sementes recém-colhidas e outro de sementes armazenadas. As sementes foram secadas até as umidades de 12, 15, 20, 25, 30, 35 e 40%. A qualidade fisiológica das sementes foi avaliada pelo teste de germinação, condutividade elétrica e os perfis das enzimas SOD, CAT, PO, GOT, MDH e EST e de proteínas resistentes ao calor. De forma geral, ocorre uma interferência na expressão dessas enzimas em função da presença de água livre nas sementes. Sementes úmidas apresentam baixa ou nenhuma expressão enzimática. O processo de liofilização permite a preservação da qualidade das sementes de café e não altera a funcionalidade das enzimas estudadas. Os perfis de isoenzimas do processo antioxidativo em sementes de café arábica é influenciado pela umidade inicial das sementes. O processo de liofilização das sementes garante maior sensibilidade na detecção da expressão dessas isoenzimas.

Abstract: Coffee seeds are sensitive to desiccation and are used or stored with different moisture content values, which may affect the results of quality assessment. The aim of this study was to evaluate the changes in protein profile in electrophoresis gel in coffee seeds with different moisture content values under freeze-drying and without freeze-drying. Two lots of arabica coffee seeds were used, one of newly-harvested seeds and another of stored seeds. The seeds were dried to the moisture content values of 12, 15, 20, 25, 30, 35, and 40%. The physiological quality of the seeds was assessed through the germination test, electrical conductivity, and the profiles of the enzymes SOD, CAT, PO, GOT, MDH, and EST and of heat-resistant proteins. In general, there is an effect on expression of these enzymes in accordance with the presence of free water in the seeds. Moist seeds have little to no enzyme expression. The freeze-drying process allows preservation of coffee seed quality and does not change the functionality of the enzymes studied. The isoenzyme profiles of the antioxidant process in arabica coffee seeds are affected by the initial moisture content of the seeds. The freeze-drying process of the seeds ensures greater sensitivity in detection of the expression of these isoenzymes.