ABSTRACT The objectives of this study were to estimate genetic parameters and the repeatability coefficient and to select clones of elephant grass from full-sib families. Fifteen clones and two commercial controls were evaluated in a randomized block design with three replications. Three measurements were taken at regular 10-month intervals. Genotypic variance was significant. The observed heritability based on the mean of the genotypes (0.58), coupled with the results of repeatability (0.53) and selection accuracy (0.76), demonstrates that the genotypes performance is constant between measurements. Thus, only three measurements are necessary to reliably select genotypes and obtain real genetic gains with selection. Among the 15 clones evaluated, six showed higher new means than those of the BRS Capiaçu and BRS Canará controls and can be used as parents and/or to compose value for cultivation and use experiments aimed at the release of cultivars for bioenergy production. fullsib full sib families replications 10month month 10 intervals significant 0.58, 058 0.58 , 0 58 (0.58) 0.53 053 53 (0.53 0.76, 076 0.76 76 (0.76) Thus 1 andor or production 05 0.5 5 (0.58 (0.5 07 0.7 7 (0.76 0. (0. (0.7 (0 (

abstract The purpose of the present study was to investigate the effect of two recovery periods between consecutive and non-consecutive days in strength training sessions on hormonal, neuromuscular and morphological variables in recreationally trained men. Nineteen young men completed the study and were randomly divided into two groups: 24R, 24-hour recovery group (n = nine) and 72R, 72-hour recovery group (n = ten). The strength training program (RT) lasted six weeks with two serial routines, with a weekly frequency of four times. The saliva sample was collected once a week in the morning to determine salivary testosterone. The 1RM, jump against movement and body composition tests were performed in the pre- and post-training periods. As for salivary testosterone, there was no significant effect with respect to time and between groups. Both groups improved maximal strength in terms of intervention time in the barbell bench press and in the leg press 45º, not differing between groups and body composition showed significant interaction in time to body fat percentage ∆% = -14.6 ± 10.0 (24R) and -17.2 ± 10.9 (72R); p = 0.00, fat mass ∆% = -13, 7 ± 9.2 (24R) and -18.2 ± 13.0 (72R); p = 0.00 and fat-free mass ∆% = 3.5 ± 2.7 (24R) and 2.5 ± 2 .8 (72R), p = 0.00. The recovery periods 24 and 72 hours between sessions induced similar responses in the parameters investigated in recreationally strength-trained men. nonconsecutive non hormonal 24R R 24hour hour n nine 72R 72hour ten. ten . ten) RT (RT routines times testosterone 1RM RM pre posttraining post 45º º ∆ 14.6 146 14 6 -14. 100 10 0 10. (24R 17.2 172 17 -17. 109 9 (72R) 000 00 13, 13 -13 92 9. 18.2 182 18 -18. 130 13. 0.0 fatfree free 35 3 5 3. 27 2. 25 8 , strengthtrained 14. 1 -14 17. -17 (72R -1 18. -18 0. -

resumo O objetivo do presente estudo foi investigar o efeito de dois períodos de recuperação entre dias consecutivos e não consecutivos em sessões de treinamento de força sobre variáveis hormonais, neuromusculares e morfológicas em homens treinados recreacionalmente. Dezenove homens jovens completaram o estudo e foram divididos aleatoriamente em dois grupos: 24R, grupo de recuperação de 24 horas (n = nove) e 72R, grupo de recuperação de 72 horas (n = dez). O programa de treinamento de força (TF) durou seis semanas com duas rotinas seriadas, com frequência semanal de quatro vezes. A amostra de saliva foi coletada uma vez por semana no período da manhã para determinação da testosterona salivar. Os testes de 1RM, salto contra movimento e composição corporal foram realizados nos períodos pré e pós-treinamento. Quanto à testosterona salivar, não houve efeito significativo em relação ao tempo e entre os grupos. Ambos os grupos melhoraram a força máxima em termos de tempo de intervenção no supino reto com barra e no leg press 45º, não diferindo entre os grupos e composição corporal apresentaram interação significativa no tempo para percentual de gordura corporal ∆% = -14,6 ± 10,0 (24R) e -17,2 ± 10,9 (72R); p = 0,00, massa gorda ∆% = -13, 7 ± 9,2 (24R) e -18,2 ± 13,0 (72R); p = 0,00 e massa isenta de gordura ∆% = 3,5 ± 2,7 (24R) e 2,5 ± 2,8 (72R), p = 0,00. Os períodos de recuperação de 24 e 72 horas entre as sessões induziram respostas semelhantes nos parâmetros investigados em homens treinados de força recreacionalmente. hormonais recreacionalmente 24R R 2 n nove 72R dez. dez . dez) TF (TF seriadas vezes salivar 1RM RM póstreinamento. póstreinamento pós treinamento. pós-treinamento 45º º ∆ 14,6 146 14 6 -14, 100 10 0 10, (24R 17,2 172 17 -17, 109 9 (72R) 000 00 13, 13 -13 92 9, 18,2 182 18 -18, 130 0,0 35 3 5 3, 27 2, 25 28 8 , 14, 1 -14 17, -17 (72R -1 18, -18 0, -

ABSTRACT The mixed-model methodology is an alternative to select genotypes for traits highly influenced by the environment. In addition, this method allows FOR estimating the repeatability coefficient and predicting the number of assessments needed for a selection process to increase reliability. This study aimed to determine the minimum number of evaluations necessary for a reliable selection process and to estimate the variance components used for predicting genetic gains between and within half-sib families of elephant grass ( Cenchrus purpureus (Schumach.) Morrone ) using the mixed-model methodology. Half-sib families were generated using genotypes from the Active Germplasm Bank of Elephant Grass. The experiment was performed in a randomized block design with nine half-sib families, three replicates, and eight plants per plot. We evaluated 216 genotypes (individual plants) of elephant grass. The deviance analysis was carried out, genetic parameters were estimated, gains between and within families were predicted, and repeatability coefficients were obtained using Selegen software. There was genetic variability for selection within the families evaluated. The reliability values found above 60 % for plant height and number of tillers and above 80 % for dry matter yield suggest that only two evaluations are required to select superior genotypes with outstanding reliability. Sixteen genotypes were identified and selected for their productive potential, which can be used as parents in elephant grass breeding programs for bioenergy production. mixedmodel mixed model environment addition halfsib half sib Schumach. Schumach (Schumach. Halfsib Half Grass replicates plot 21 individual out estimated predicted software 6 8 potential production (Schumach 2

Abstract The study of adaptability and yield stability is essential for the selection and recommendation of new cultivars. Thus, this study determined the adaptability and yield stability of black bean genotypes for cultivar recommendation using a GGE biplot. To this end, nine trials were carried out at different locations in the state of Rio de Janeiro. Eleven genotypes were evaluated in three growing seasons, in a randomized block design, with three replications. Adaptability and stability of grain yield were analyzed by the GGE biplot method. The effects of genotypes, environments and of the genotype - environment interaction were significant, which explained the different responses of the genotypes to the tested environments. The GGE biplot analysis revealed Macaé as an ideal district for testing and high yield, adaptability, and stability of performance were observed for genotype CNFP 15290, which can be recommended for grain production in the state of Rio de Janeiro. cultivars Thus end Janeiro seasons design replications method significant 15290 1529 152 15 1

RESUMEN: Este trabajo tiene como objetivo investigar la actuación y desarrollo profesional de profesores brasileños durante la enseñanza remota de emergencia en la pandemia COVID 19, considerando aspectos como las condiciones de trabajo, aprendizajes de los docentes y su salud mental. Una muestra de 364 profesores de educación básica en Brasil fue evaluada a partir de instrumentos de autodescripción considerando datos socio demográficos, condiciones de trabajo, aspectos relativos a la actuación del docente y el aprendizaje de la docencia (actividades, saberes y formación profesional), salud mental y sentido de la vida. Los resultados indican que los cambios en el trabajo docente se dan en medio de la ausencia o poca experiencia de la mayoría de los profesores con la enseñanza online y/o uso de tecnología digital, además de la falta de apoyo y condiciones laborales adecuadas. Las principales tareas estuvieron conciliadas por la tecnología y los saberes didácticos jugó un papel fundamental en este contexto. La formación ofrecida a los profesores por parte de las instituciones educativas fue en la mayoría de los casos insuficiente, provocando la necesidad de una autocapacitación complementaria. Los saberes experienciales demostraron ser fundamentales en la enseñanza docente. Finalmente, Se ha demostrado que la salud mental juega un papel crucial un papel crucial en este proceso de desarrollo profesional, además de demostrar una correlación positiva con la presencia de sentido en la vida. Implicaciones para el desarrollo profesional docente son discutidas. RESUMEN 19 36 demográficos actividades, actividades (actividades , profesional) vida yo digital adecuadas contexto insuficiente complementaria Finalmente discutidas 1 3

ABSTRACT: This work aims to investigate the work and professional development of Brazilian teachers during emergency remote teaching in the COVID-19 pandemic, considering aspects such as working conditions, teaching-learning, and mental health. A sample of 364 basic education teachers in Brazil was assessed using self-report instruments considering sociodemographic data, working conditions, aspects related to teaching work and teaching learning (activities, knowledge and teacher education), mental health, and meaning in life. The results showed that changes in teaching work occur amid the absence or limited experience of most teachers with online teaching and/or the use of digital technology, in addition to the lack of adequate support and working conditions. The main tasks were mediated by technology, and didactic knowledge played a fundamental role in this context. The education offered to teachers by the institutions was largely insufficient, causing the need for complementary (self)education. Experiential knowledge has been shown to be fundamental in teaching and learning. Finally, mental health was shown to play a crucial role in this professional development process, in addition to demonstrating a positive correlation with the presence of meaning in life. The implications for the professional development of teachers are discussed. ABSTRACT COVID19 COVID 19 COVID-1 pandemic conditions teachinglearning, teachinglearning learning, teaching-learning 36 selfreport self report data activities, activities (activities education, , education) life andor technology context insufficient selfeducation. selfeducation education. (self)education Finally process discussed COVID1 1 COVID- 3

RESUMO: Este trabalho tem como objetivo investigar a atuação e desenvolvimento profissional de professores brasileiros durante o ensino remoto emergencial na pandemia de covid-19, considerando aspectos como condições de trabalho, de aprendizagem da docência e da saúde mental. Uma amostra de 364 professores da Educação Básica no Brasil foi avaliada a partir de instrumentos de autorrelato considerando dados sociodemográficos, condições de trabalho, aspectos relativos à atuação docente e aprendizado da docência (atividades, saberes e formação docentes), saúde mental e sentido da vida. Os resultados apontaram que as mudanças no trabalho docente ocorrem em meio à ausência ou pouca experiência da maioria dos professores com ensino on-line e/ou com uso de tecnologia digital, além da falta de apoio e condições de trabalho adequados. As principais tarefas foram mediadas por tecnologia e os saberes didáticos tiveram um papel fundamental neste contexto. A formação oferecida aos professores pelas instituições educativas foi insuficiente em grande parte, provocando a necessidade de (auto)formações complementares. Os saberes experienciais demonstraram ser fundamentais na aprendizagem da docência. Finalmente, a saúde mental demonstrou ter um papel crucial nesse processo de desenvolvimento profissional, além de demonstrar uma correlação positiva com a presença de sentido na vida. Implicações para o desenvolvimento profissional docente são discutidas. RESUMO covid19, covid19 covid 19, 19 covid-19 36 sociodemográficos atividades, atividades (atividades docentes, docentes , docentes) vida online on line eou digital adequados contexto parte autoformações auto formações complementares Finalmente discutidas covid1 1 covid-1 3 covid-

ABSTRACT One of the challenges of the energy sector is the identification of renewable resources with less impact on the environment and that are economically viable. This study aimed to estimate the genetic diversity of eleven full-sib families of elephant grass, using quantitative traits associated with bioenergy production. The trial followed a randomized blocks design, with four replications and each plot (family) consisting of five plants, totaling 220 genotypes. Five quantitative traits were measured: dry matter yield, dry matter percentage, plant height, stem diameter and number of tillers. The genetic diversity was estimated using multivariate methods (principal component analysis and hierarchical clustering). The analysis revealed a significant genetic diversity among the full-sib of elephant grass, with a greater variability observed for dry matter yield and number of tillers. The families 1, 2, 5, 7 and 8 exhibited superior genotypes for bioenergy production-related traits. The grouping analysis generated twenty clusters, enabling the differentiation of genotypes. Eight clusters comprised genotypes with a high dry matter yield and plant height, simultaneously, surpassing the overall mean for number of tillers. viable fullsib full sib grass production design family (family plants 22 measured percentage height tillers principal clustering. clustering . clustering) 1 2 5 productionrelated related simultaneously

RESUMO Um dos desafios do setor energético é a identificação de recursos renováveis com menor impacto ao meio ambiente e que sejam economicamente viáveis. Objetivou-se estimar a diversidade genética de onze famílias de irmãos completos de capim-elefante, utilizando-se características quantitativas associadas à produção de bioenergia. O ensaio foi conduzido em delineamento de blocos ao acaso, com quatro repetições, sendo cada parcela (família) composta por cinco plantas, totalizando 220 genótipos. Cinco características quantitativas foram mensuradas: produção de matéria seca, porcentagem de matéria seca, altura de planta, diâmetro de colmo e número de perfilhos. A estimativa da diversidade genética foi realizada por meio de métodos multivariados (componentes principais e agrupamento hierárquico). Observou-se que há diversidade genética em irmãos completos de capim-elefante, com maior amplitude de variabilidade para produção de matéria seca e número de perfilhos. As famílias 1, 2, 5, 7 e 8 apresentam genótipos superiores para características relacionadas à produção de bioenergia. Vinte grupos obtidos no agrupamento maximizaram a distinção dos genótipos. Oito grupos continham genótipos com alta produção de matéria seca e altura de planta, simultaneamente, além de valores acima da média geral para número de perfilhos. viáveis Objetivouse Objetivou se capimelefante, capimelefante capim elefante, elefante capim-elefante utilizandose utilizando bioenergia acaso repetições família (família plantas 22 mensuradas planta perfilhos componentes hierárquico. hierárquico . hierárquico) Observouse Observou 1 2 5 simultaneamente

Abstract The objective of this work was to estimate the genetic parameters and to evaluate the genotypic diversity of 12 'Tahiti' acid lime (Citrus latifolia) genotypes grafted onto two rootstocks. The experiment was carried out from July 2017 to January 2019, in the municipality of São Mateus, in the state of Espírito Santo, Brazil. Vegetative (stem diameter, canopy projection diameter, and plant height), productive (yield and fruit number), and fruit quality (fruit diameter, soluble solids content, and juice yield) traits were determined. A mixed model was used to estimate heritability and repeatability coefficients, as well as to predict clonal values. Scion diversity was determined through the standardized mean difference of Euclidean distances, and genotypes were clustered by modified Tocher. Clustering quality and trait importance were evaluated using the principal component analysis (PCA). Genotypic variance was observed, which is indicative of the possibility of selection of superior genotypes. The Tocher method showed the presence of three clusters, which is in alignment with the PCA results. The multivariate analyses allows of the selection and the recommendation of superior 'Tahiti' acid lime genotypes. 1 Tahiti 'Tahiti Citrus latifolia rootstocks 201 2019 Mateus Santo Brazil stem diameter height, height , height) yield number, number number) content coefficients values distances PCA. . (PCA) observed clusters results 20 (PCA 2

Resumo O objetivo deste trabalho foi estimar os parâmetros genéticos e avaliar a diversidade genética de 12 genótipos de lima ácida 'Tahiti' (Citrus latifolia) enxertados em dois porta-enxertos. O experimento foi conduzido de julho de 2017 a janeiro de 2019, no município de São Mateus, no estado de Espírito Santo, Brasil. Foram mensuradas características vegetativas (diâmetro de caule, diâmetro de projeção de copa e altura de planta), produtivas (rendimento e número de frutos) e de qualidade de frutos (diâmetros de fruto, teor de sólidos solúveis e rendimento de suco). Utilizou-se modelo misto para estimar os coeficientes de herdabilidade e repetibilidade, bem como predizer os valores genéticos. A diversidade entre os enxertos foi obtida por meio da diferença da distância euclidiana média padronizada, e os genótipos foram agrupados pelo método de Tocher modificado. A qualidade do agrupamento e a importância dos caracteres foi avaliada pela análise de componentes principais (ACP). Observou-se variabilidade genética, o que indica a possibilidade de seleção de genótipos superiores. O método de Tocher mostrou a presença de três grupos de genótipos, o que foi congruente com os resultados da ACP. O uso de técnicas multivariadas permite a seleção e a recomendação de genótipos superiores de lima ácida 'Tahiti'. 1 Tahiti 'Tahiti Citrus latifolia portaenxertos. portaenxertos porta enxertos. porta-enxertos 201 2019 Mateus Santo Brasil caule planta, planta , planta) diâmetros fruto suco. suco . suco) Utilizouse Utilizou se repetibilidade padronizada modificado ACP (ACP) Observouse Observou Tahiti. 20 (ACP 2

ABSTRACT Elephant grass stands out among lignocellulosic biomass plants utilized for second-generation biofuel production due to several advantageous characteristics compared to other raw materials. Its short production cycle and ability to thrive in adverse soil and climate conditions contribute to its appeal. Additionally, breeders seek genotypes with high productivity potential and adaptability to various favorable cultivation environments. This study aimed to estimate genetic parameters, predict genetic values using mixed models (REML/BLUP), and evaluate stability and adaptability for energy biomass production in elephant grass genotypes. The experiment was conducted in Campos dos Goytacazes, RJ, Brazil, utilizing a two-replicate experimental block design that included 40 elephant grass genotypes. Four harvest assessments were performed between 2016 and 2019. Genetic parameter estimation and selection of superior genotypes based on genetic value using the REML/BLUP procedure were performed using Selegen software. Stability and adaptability analyses were obtained through the harmonic mean of genotypic values (HMGV), enabling the identification of stable and highly productive genotypes. Genotypes 17, 18, 32, 16, 36, 6, 15, 31, and 34 exhibited outstanding performance in terms of HMGV, indicating enhanced stability, adaptability, and simultaneous productivity, thus ensuring robustness in cultivation. These selected genotypes hold potential for future breeding programs aimed at improving elephant grass yield for biomass production. secondgeneration second generation materials appeal Additionally environments parameters REML/BLUP, REMLBLUP , REML BLUP (REML/BLUP) Goytacazes RJ Brazil tworeplicate two replicate 4 201 2019 software HMGV (HMGV) 17 18 32 16 36 6 15 31 3 (REML/BLUP 20 (HMGV 1 2

The article presents a synthesis of the data obtained through a qualitative study, of an exploratory nature, with the objective of investigating the professional development of teachers in emergency remote teaching during the COVID-19 pandemic, in the second half of the year 2020, including working conditions, teaching learning and mental health. The participants (n=364) are basic education teachers from different parts of Brazil who answered online questionnaires. The results point to precarious conditions in the teaching work amidst the absence/little experience with the use of digital technology in the teaching-learning process and the training offered by educational institutions was largely insufficient, which led to the search for complementation by own account. The teacher's experience and didactic knowledge as planning proved to be fundamental to deal with the challenges of this scenario. Mental health has been shown to play a crucial role in professional development, in addition to demonstrating a positive correlation with the presence of meaning in life.

O artigo apresenta síntese dos dados obtidos por meio de um estudo qualitativo, de natureza exploratória, com o objetivo de investigar o desenvolvimento docente no ensino remoto emergencial durante a pandemia de COVID-19, no segundo semestre de 2020, incluindo as condições de trabalho, aprendizagem da docência e saúde mental. Os participantes=364) são professores da educação básica de diversas partes do Brasil que atendem on-line. Os resultados apontam condições precárias no trabalho docente em meio a ausência/pouca experiência com o uso de tecnologia digital no processo de ensino-aprendizagem e formação de ensino-aprendizagem foram, em grande parte, insuficientemente, o que levou à busca de complementações por conta própria. A do professor saberes didáticos como o planejamento desse cenário e fundamentos para lidar com os cenários. A saúde mental tem um papel crucial no desenvolvimento profissional, demonstrando uma importância positiva com a vida além do sentido.

RESUMO: Embora a produtividade seja uma característica fundamental em programas de melhoramento da lima ácida Tahiti, outras características se destacam por proporcionar uma seleção mais eficiente ou mesmo influenciar na expressão de atributos produtivos. A aplicação de inferência Bayesiana, pode tornar o processo de identificação de indivíduos superiores e o estudo das correlações entre as características ainda mais acurado. Objetivou-se, por meio deste estudo, estimar valores genéticos em genótipos de lima ácida Tahiti através de inferência Bayesiana e estimar coeficientes de correlação e de trilha entre características vegetativas, produtivas e de qualidade de frutos. Vinte e quatro genótipos de lima ácida foram avaliados durante dois anos para peso e número de frutos, volume de copa, diâmetro de caule, teor de sólidos solúveis dos frutos, espessura de casca e rendimento de suco. Os valores genéticos foram estimados por meio de inferência Bayesiana e modelos com diferentes estruturas residuais foram testados via critério de informação de deviance. Coeficiente de correlação de Pearson e de análise de trilha foram determinados, removendo o efeito de multicolinearidade. A estimação de valores genéticos via inferência Bayesiana apresentou alta acurácia seletiva. As correlações obtidas entre caracteres de diferentes grupos podem ser úteis em estratégias de seleção para melhoramento da lima ácida Tahiti. A inferência Bayesiana demonstrou ser uma ferramenta importante e deve ser considerada em programas de melhoramento de culturas perenes.

ABSTRACT: Although the fruit yield has a core importance in Tahiti acid lime breeding programs, other traits stand out among the quality fruit and vegetative traits as ones that still need to be improved in selection of superior genotypes. Appling efficient tools aiming selection, such as the Bayesian inference, becomes an alternative in perennial crops. This study applied Bayesian inference in the genetic evaluation of Tahiti acid lime genotypes and estimated the interrelation between vegetative, productive and fruit quality traits. Twenty-four acid lime genotypes were evaluated for number of fruits, fruit yield, canopy volume, stem diameter, soluble solids content, shell thickness, and juice yield traits. The genotypic values were estimated through Bayesian inference and models with different residual structure were tested via deviance information criterion. Pearson’s correlation and the path analysis were estimated, removing the multicollinearity effect. The Bayesian inference estimates genotypic values with high selective accuracy. The correlations obtained between traits from different groups can be useful in selection strategies for improvement of Tahiti acid lime. The Bayesian inference demonstrated to be an important tool and should be considered in perennial breeding programs.

Abstract Aim: The aims of the present study were to verify the self-perception level of the chronotype of amateur street runners and to test the association between the chronotype, gender, age, and preferred training time. Methods: A total of 166 amateur street runners were included (♀ = 89, age 38.9 ± 11.2 years; ♂ = 77, age 38.0 ± 9.7 years). The Brazilian version of the Horne & östberg questionnaire was used to assess chronotypes and the preferred training time was determined through a multiple choice question. Based on chronotype definitions that suggest that when free to choose, morning-types (MT) would prefer training in the morning, evening-types (ET) in the evening and neither-types (NT) would not have a predilection for any specific time. The corroboration of this hypothesis was assumed as self-perception level of the chronotypes. Results: Women showed higher self-perception levels of their chronotype compared to men (58.4% vs. 41.6%; χ2 = 4.699; p = 0.030). By chronotypes, MT, NT, and ET self-perception levels were 73.9%, 15.9%, 88.9%, respectively (χ2 = 57.489; p < 0.001). The most observed women circadian typology was MT, while in men it was NT (χ2 = 8.951; p = 0.011). However, there was no significant association between gender and preferred training time (χ2 = 2.654; p = 0.265). Age, female gender and preference to exercise during the day are associated with MT. Conclusion: Women runners showed a greater perception of their circadian traits than men, despite there was no association between gender and preferred training time.

Resumo O conhecimento prévio de combinações copa/porta-enxerto é fundamental para o estabelecimento de estratégias adequadas de manejo de pomares de citros. O objetivo deste trabalho foi avaliar a produtividade e a qualidade iniciais de frutos entre 228 combinações copa/ porta-enxerto implantadas no Município de Ibirapuã, Extremo Sul da Bahia, em 2015. As colheitas foram realizadas no período de abril a agosto de 2019, quando as plantas atingiram 4 anos. Avaliaram-se o número, a massa total e o diâmetro transversal dos frutos, a eficiência produtiva, o rendimento de polpa, o teor de sólidos solúveis, a acidez titulável e ratio. Houve diferença estatística para todas as características relacionadas à produção e à qualidade dos frutos quanto aos fatores estudados e suas combinações. Dentre os clones de laranjeira ‘Pera’ estudados, as combinações ‘Pera CNPMF A-15’/citrandarin ‘San Diego’ e ‘Pera CNPMF D-3’/citrandarin ‘Riverside’ foram as que mais se destacaram. A laranjeira ‘Sincorá’, em combinação com os citrandarins ‘San Diego’ e ‘Indio’, tem potencial de recomendação aos produtores que desejam antecipar suas colheitas, assim como a laranjeira ‘Natal Ipeal’, em combinação com o citrandarin ‘Indio’, no sentido de postergá-las.

Abstract Prior knowledge of scion/rootstock combinations is essential for establishing appropriate citrus orchard management strategies. The objective of this work was to assess the initial yield and fruit quality among 228 scion/rootstock combinations set up in the municipality of Ibirapuã, extreme south of the state of Bahia in 2015. Harvests were carried out from April to August 2019, when trees reached 4 years of age. Number, total mass and cross-sectional diameter of fruits, productive efficiency, pulp yield, soluble solids content, titratable acidity and SS/AT ratio were evaluated. Statistical difference for all characteristics related to production and fruit quality regarding factors studied and their combinations was observed. Among ‘Pera’ orange clones, ‘Pera CNPMF A-15’/‘San Diego’ citrandarin and ‘Pera CNPMF D-3’/‘Riverside’ citrandarin combinations stood out. ‘Sincorá’ orange, in combination with ‘San Diego’ and ‘Indio’ citrandarins presented potential to be recommended to producers who wish to anticipate their harvests, as well as ‘Natal Ipeal’ orange in combination with ‘Indio’ citrandarin, in the sense of postponing them.

ABSTRACT Combining longitudinal data and statistical models from perennial crops enabled us to estimate the optimum number of measures (harvests), implying accurate discrimination of superior genotypes in those crops. Herein, the goal of this study was to determine the optimum number of harvests based on yield traits and recommend a superior graft/rootstock combination (GRC) for Citrus latifolia Tanaka. Twenty-four GRCs of 'Tahiti' acid lime were evaluated from July 2017 to August 2018 for fruit yield per plant (FYP), number of fruits per plant (NFP), and longitudinal (LFD) and transversal fruit diameter (TFD). The experimental design was a randomized complete block with 4 replications. The experimental unit consisted of three individuals, totalling 244 individuals. The GRCs were composed of (i) two hybrids that were used as rootstock, citrumelo ‘Swingle’ (Citrus paradisi x Poncirus trifoliata) and cintrandarin ‘Riverside’ (Citrus sunki x Poncirus trifoliata); and (ii) 12 different C. latifolia genotypes that were used as grafts: Bello Fruit, Eledio, Iconha, Itarana, Santa Rosa, Bearss lime, CNPMF 01, CNPMF 02, CNPMF 2001, CNPMF 5059, BRS Passos, and Persian 58. Mixed models were employed to estimate the variance components. The optimum number of harvests was determined based on selective efficiency values above 0.9. The estimated repeatability coefficients presented values of 0.14 (LFD), 0.16 (TFD), 0.36 (FYP), and 0.38 (NFD). Based on the results, four harvests were able to choose genotypes based on FYP and NFP, whereas LFD and TFD were considered inefficient traits for recommending superior GRCs.

Resumen Las redes personales para modelar las relaciones entre un grupo de individuos han sido muy utilizadas en las ciencias sociales, especialmente en la sociología. Sin embargo, este tipo de enfoque abarca otras áreas del conocimiento científico. En el caso de la educación, por ejemplo, el uso de estas redes puede servir de subsidio para el mapeo del campo relacional que involucra a un determinado individuo, considerando sus diferentes espacios educativos. En ese sentido, se presupone que su uso puede servir como herramienta metodológica para la identificación de los campos relacionales que permean el desempeño escolar de estudiantes durante su escolarización. El objetivo de este trabajo es analizar la relación entre redes personales y desempeño escolar con alumnado de la Tercera Serie de la Enseñanza Media de 2015 de la Escuela Estadual Santos Dumont, ubicada en el municipio de Parnamirim en Rio Grande do Norte, Brasil. Para alcanzar este objetivo, la metodología adoptada fue constituida por cinco procedimientos específicos: 1) Una revisión de bibliografía sobre redes personales y desempeño escolar, con énfasis en los conceptos de densidad (grado de conectividad de la red) y número de clics (agrupación de nodos, a partir de tres o más actores que mantienen vínculos entre sí). 2) Aplicación de cuestionario para la recolección de los datos de redes personales, por medio del cual el alumnado mencionó el nombre de 45 personas que conocía; el grado de proximidad y el tipo de relación que tenía con cada una de estas. 3) Cálculo de los valores de densidad y número de clics (indicadores de redes). 4) Colección de notas de estudiantes de portugués y matemática. 5) Aplicación del modelo de regresión logística para identificar las probables relaciones entre la red personal y el desempeño escolar de cada estudiante participante. Los resultados mostraron que estudiantes con redes muy densas tienden a obtener malas calificaciones en portugués; mientras que estudiantes con redes que tienen muchos clics tienen una tendencia a tener bajas calificaciones en matemáticas.

Resumo As redes pessoais para modelar as relações entre um grupo de indivíduos têm sido bastante utilizadas nas ciências sociais, especialmente na Sociologia. Apesar disso, esse tipo de abordagem abrange outras áreas do saber científico. No caso da educação, por exemplo, o uso das redes pessoais pode servir de subsídio para o mapeamento do campo relacional que envolve um determinado indivíduo, considerando os seus diferentes espaços educativos. Nesse sentido, pressupõe-se que o uso das redes pessoais pode servir como ferramenta metodológica para a identificação dos campos relacionais que permeiam o desempenho escolar de um aluno durante a sua escolarização. Diante disso, o objetivo desse trabalho é analisar a relação entre redes pessoais e desempenho escolar com alunos da Terceira Série do Ensino Médio de 2015 da Escola Estadual Santos Dumont, localizada no município de Parnamirim no Rio Grande do Norte, Brasil. Para alcançar esse objetivo, a metodologia adotada foi constituída por cinco procedimentos específicos: 1) Uma revisão de literatura sobre redes pessoais e desempenho escolar, com ênfase nos conceitos de densidade (grau de conectividade da rede) e número de cliques (agrupamento de nós, a partir de três ou mais atores que mantêm ligações entre si.); 2) Aplicação de questionário para coleta dos dados de redes pessoais, por meio do qual os alunos mencionaram o nome de 45 pessoas que eles conheciam; o grau de proximidade e o tipo de relação que els tinham com cada uma das 45 pessoas mencionadas; 3) Cálculo dos valores de densidade e número de cliques (indicadores de redes); 4) Obtenção das notas de Português e Matemática dos alunos; e 5) Aplicação do modelo de regressão logística para identificar as prováveis relações entre a rede pessoal e o desempenho escolar de cada aluno investigado. Os resultados obtidos evidenciaram que alunos com redes muito densas tendem a tirar notas baixas em Português, enquanto que os alunos com redes que têm muitos cliques apresentam uma certa tendência a tirarem notas baixas em Matemática.

Abstract Personal networks for modeling relationships among a group of individuals have been widely used in the social sciences, especially in Sociology. Nevertheless, this type of approach covers other areas of scientific knowledge. In the case of education, for example, the use of personal networks can serve as a basis for the mapping of the relational field that involves a particular individual, considering their different educational spaces. In this sense, it is assumed that the use of personal networks can serve as a methodological tool for the identification of the relational fields that permeate a student’s school performance during their schooling. Therefore, the objective of this work is to analyze the relationship between personal networks and school performance with students of the High School Series of the Santos Dumont State School, located in the municipality of Parnamirim, Rio Grande do Norte, Brazil. In order to reach this goal, the methodology adopted consisted of five specific procedures: 1) A literature review on personal networks and school performance, with emphasis on the concepts of density (degree of network connectivity) and the number of clicks (clustering of nodes, from three or more actors who maintain links between them.); 2) Application of a questionnaire to collect the data of personal networks, through which the students mentioned the name of 45 people they knew; the degree of proximity and the type of relationship they had with each of the 45 people mentioned; 3) Calculation of density values and number of clicks (network indicators); 4) Obtaining the notes of Portuguese and Mathematics of the students; and 5) Application of the logistic regression model to identify the likely relationships between the personal network and the school performance of each student investigated. The results obtained showed that students with very dense networks tend to take low grades in Portuguese, while students with networks that have many clicks show a certain tendency to take low grades in Mathematics.

Resumo O Brasil representa em grande percentual a produção mundial de citros, destacando dentre várias espécies cultivadas, a limeira ácida ‘Tahiti’. No entanto, seu cultivo é sustentado por uma base genética muito estreita, sendo composto por poucas opções de copa e porta-enxerto. Deste modo, objetivou-se avaliar o desenvolvimento vegetativo e a produção de doze clones de limeira ácida ‘Tahiti’ sobre dois porta-enxertos. O experimento foi conduzido na Fazenda José Guarete, no município de São Mateus – ES. Utilizou-se o delineamento experimental de blocos ao acaso, no esquema de parcelas subdivididas, com a parcela sendo constituída por dois porta-enxertos e a subparcela, os doze clones de limeira ácida ‘Tahiti’. Foram avaliadas as características: desenvolvimento vegetativo, produção e eficiência produtiva, qualidade interna e externa dos frutos. Os clones Bello Fruit, Iconha, BRS Passos, Itarana, Persian 58, CNPMF 5059 e Elédio foram superiores nas características produtivas, vegetativas e na qualidade do fruto. O porta-enxerto citrumelo ‘Swingle’ apresentou valores referentes a características vegetativas superiores ao citrandarin ‘Riverside’. As combinações de clone e porta-enxerto que proporcionaram melhor desempenho agronômico neste estudo foram BRS Passos, Bello Fruit, Elédio e Iconha enxertadas no citrumelo ‘Swingle’ e CNPMF 5059, Iconha e Elédio sobre o citrandarin ‘Riverside’.

Abstract Brazil accounts for a large percentage of the world’s citrus production, with ‘Tahiti’ acid lime tree standing out among several cultivated species. However, its cultivation is supported by a very narrow genetic base, being composed of few scion and rootstock options. In this way, the aim of this study was to evaluate the vegetative development and production of twelve ‘Tahiti’ acid lime clones on two rootstocks. The experiment was carried out at Fazenda José Guarete, municipality of São Mateus – ES. A randomized block design was used in the split plot scheme, with plot consisting of two rootstocks and subplot of the twelve ‘Tahiti’ acid lime clones. Traits evaluated were: vegetative development, production and productive efficiency, internal and external quality of fruits. Bello Fruit, Iconha, BRS Passos, Itarana, Persian 58, CNPMF 5059 and Elédio clones were superior in terms of production, vegetative traits and fruit quality. ‘Swingle’ citrumelo rootstock showed higher values for vegetative traits compared to ‘Riverside’ citrandarin. The clone and rootstock combinations that provided better agronomic performance in this study were BRS Passos, Bello Fruit, Elédio and Iconha grafted on ‘Swingle’ citrumelo and CNPMF 5059, Iconha and Elédio grafted on ‘Riverside’ citrandarin.