cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.22268633
title: Morphometry of chincuya seeds (Annona purpurea Moc. &Sessé ex Dunal) and embryonic growth under dry warm storage

description: Abstract In Mexico, Annona purpurea Moc. &Sessé ex Dunal, chincuya is found in mountains and family gardens. It is used as food (fruits), traditional medicine (leaves, stems, roots, seeds, bark), wood in construction, papermaking, carpentry, rope making, and as fuel. There is not enough information on the seed, nor on germination management, which is scarce, prolonged and erratic. Considering that the morphophysiological dormancy is the probable cause, it was necessary, within a broader project, to start with the characterization of the seed and determine the effect of dry warm storage (DWS) on it. The perimeter and length of the embryos increased due to the increase in length of the cotyledons and the hypocotil root axis, while the middle hypocotyl area decreased, forming an acinturated embryo. These data indicate that the embryos of chincuya are underdeveloped since they grew and modified their shape, due to the effect of DWS, until the 6th month. This development of the embryo within the seed during dry warm storage confirms the presence of morphological dormancy. This is the first report of embryo growth and characterization of chincuya seeds.
DOI: 10.6084/m9.figshare.22268633.v1
title: Morphometry of chincuya seeds (Annona purpurea Moc. &Sessé ex Dunal) and embryonic growth under dry warm storage

description: Abstract In Mexico, Annona purpurea Moc. &Sessé ex Dunal, chincuya is found in mountains and family gardens. It is used as food (fruits), traditional medicine (leaves, stems, roots, seeds, bark), wood in construction, papermaking, carpentry, rope making, and as fuel. There is not enough information on the seed, nor on germination management, which is scarce, prolonged and erratic. Considering that the morphophysiological dormancy is the probable cause, it was necessary, within a broader project, to start with the characterization of the seed and determine the effect of dry warm storage (DWS) on it. The perimeter and length of the embryos increased due to the increase in length of the cotyledons and the hypocotil root axis, while the middle hypocotyl area decreased, forming an acinturated embryo. These data indicate that the embryos of chincuya are underdeveloped since they grew and modified their shape, due to the effect of DWS, until the 6th month. This development of the embryo within the seed during dry warm storage confirms the presence of morphological dormancy. This is the first report of embryo growth and characterization of chincuya seeds.
DOI: 10.6084/m9.figshare.22268637
title: Agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in a semi-arid environment

description: ABSTRACT The objective of this work was to evaluate the agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in intercropping systems in a semi-arid environment. Experiments were carried out in two cropping years using a randomized block design with four replicates. The treatments consisted of four cowpea cultivars (‘BRS Tumucumaque,’ ‘BRS Cauamé,’ ‘BRS Guariba,’ and ‘BRS Itaim’) and two beet cultivars (‘Early Wonder’ and ‘Fortuna’). In each block of the experiments, plots in monocropping of the cultivars were sown as additional treatments to obtain the following agronomic and competition indexes and economic indicators: land equivalent ratio (LER), area time equivalent ratio (ATER), land use efficiency (LUE), beet equivalent production (BEP), competitive ratio (CR), crop aggressivity (A), gross income (GI), net income (NI), rate of return (RR), and corrected monetary advantage (CMA). The highest agro-bioeconomic efficiency of the tested intercropping systems was achieved in the combination of cowpea cultivar BRS Guariba and beet cultivar Fortuna. Beet behaved as the dominant crop, and cowpea as the dominated crop in all evaluated intercropping systems. The indexes and indicators demonstrated the complementarity and sustainability of the combination of cowpea cultivar BRS Guariba with beet cultivar Fortuna.
DOI: 10.6084/m9.figshare.22268637.v1
title: Agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in a semi-arid environment

description: ABSTRACT The objective of this work was to evaluate the agro-bioeconomic feasibility of immature cowpea and beet cultivar combinations in intercropping systems in a semi-arid environment. Experiments were carried out in two cropping years using a randomized block design with four replicates. The treatments consisted of four cowpea cultivars (‘BRS Tumucumaque,’ ‘BRS Cauamé,’ ‘BRS Guariba,’ and ‘BRS Itaim’) and two beet cultivars (‘Early Wonder’ and ‘Fortuna’). In each block of the experiments, plots in monocropping of the cultivars were sown as additional treatments to obtain the following agronomic and competition indexes and economic indicators: land equivalent ratio (LER), area time equivalent ratio (ATER), land use efficiency (LUE), beet equivalent production (BEP), competitive ratio (CR), crop aggressivity (A), gross income (GI), net income (NI), rate of return (RR), and corrected monetary advantage (CMA). The highest agro-bioeconomic efficiency of the tested intercropping systems was achieved in the combination of cowpea cultivar BRS Guariba and beet cultivar Fortuna. Beet behaved as the dominant crop, and cowpea as the dominated crop in all evaluated intercropping systems. The indexes and indicators demonstrated the complementarity and sustainability of the combination of cowpea cultivar BRS Guariba with beet cultivar Fortuna.
DOI: 10.6084/m9.figshare.22268640
title: Yield capacity of six superior pitaya genotypes under edaphoclimatic conditions of the Federal District

description: Abstract The Embrapa Cerrados pitaya breeding program developed five superior genotypes of different species. The objective of this work was to evaluate the yield capacity of these five pitaya genotypes under the edaphoclimatic conditions of the Federal District. The experiment was carried out at the Embrapa Cerrados in Planaltina, DF. The five selected pitaya genotypes were evaluated, as well as a parent genotype used in the breeding program. Length (CF), diameter (DF) and mass (MF) of all fruits were evaluated, as well as the length/diameter ratio (CF.DF-1), number of fruits per plant (NF.PL-1), production per plant (kg.PL-1) and estimated productivity (t.ha-1). BRS Luz do Cerrado and BRS Lua do Cerrado presented larger and heavier fruits, while BRS Minipitaya do Cerrado presented the smallest fruits. CPAC Roxa and BRS Granada do Cerrado presented more rounded fruits. BRS Granada do Cerrado had the highest yield capacity in the two evaluated crops. The results obtained prove the importance of genetic breeding and the selection of superior genotypes more adapted to the region of cultivation, in order to guarantee greater profitability and products of better quality to rural producers and consumers.
DOI: 10.6084/m9.figshare.22268640.v1
title: Yield capacity of six superior pitaya genotypes under edaphoclimatic conditions of the Federal District

description: Abstract The Embrapa Cerrados pitaya breeding program developed five superior genotypes of different species. The objective of this work was to evaluate the yield capacity of these five pitaya genotypes under the edaphoclimatic conditions of the Federal District. The experiment was carried out at the Embrapa Cerrados in Planaltina, DF. The five selected pitaya genotypes were evaluated, as well as a parent genotype used in the breeding program. Length (CF), diameter (DF) and mass (MF) of all fruits were evaluated, as well as the length/diameter ratio (CF.DF-1), number of fruits per plant (NF.PL-1), production per plant (kg.PL-1) and estimated productivity (t.ha-1). BRS Luz do Cerrado and BRS Lua do Cerrado presented larger and heavier fruits, while BRS Minipitaya do Cerrado presented the smallest fruits. CPAC Roxa and BRS Granada do Cerrado presented more rounded fruits. BRS Granada do Cerrado had the highest yield capacity in the two evaluated crops. The results obtained prove the importance of genetic breeding and the selection of superior genotypes more adapted to the region of cultivation, in order to guarantee greater profitability and products of better quality to rural producers and consumers.
DOI: 10.6084/m9.figshare.22268642
title: Can caregivers’ mental disorders be associated with childhood obesogenic eating behavior?

description: Abstract Objective: to assess the association between caregivers’ mental disorders and schoolchildren’s obesogenic eating behavior. Methods: cross-sectional study used a public school-based sample of children and their primary caregivers. Caregivers had to report depressive episodes or generalized anxiety disorder (GAD) during the Mini-International Neuropsychiatric Interview (MINI). Children’s obesogenic eating behavior were assessed using food responsiveness (FR) and emotional overeating (EOE) subscales of the Children’s Eating Behaviour Questionnaire (CEBQ). Bivariate analysis was conducted using the t-test, ANOVA, Pearson correlation, and adjusted linear regression model was used (including variables caregivers: sex, age, economic indicator, and schooling; schoolchildren: sex and nutritional status). Results: study includes 596 children-caregiver dyads (309 boys and 287 girls). Among caregivers, 24.7% had experienced current depressive episodes, 38.7% had past depressive episodes, and 17.2% had GAD. We observed, after adjusted analysis, that having a caregiver in a current depressive episode, increases schoolchildren’s obesogenic behavior of, for FR at 0.235 points (β=0.235; CI95%=0.022-0.449;) and EOE at 0.337 points (β=0.337; CI95%=0.162-0.512). Conclusion: caregivers’ current depressive episodes were associated with higher averages of obesogenic eating behavior (caregiver-reported), both in consuming palatable food without feeling hungry (FR) and in increasing food intake in response to negative emotions (EOE).
DOI: 10.6084/m9.figshare.22268642.v1
title: Can caregivers’ mental disorders be associated with childhood obesogenic eating behavior?

description: Abstract Objective: to assess the association between caregivers’ mental disorders and schoolchildren’s obesogenic eating behavior. Methods: cross-sectional study used a public school-based sample of children and their primary caregivers. Caregivers had to report depressive episodes or generalized anxiety disorder (GAD) during the Mini-International Neuropsychiatric Interview (MINI). Children’s obesogenic eating behavior were assessed using food responsiveness (FR) and emotional overeating (EOE) subscales of the Children’s Eating Behaviour Questionnaire (CEBQ). Bivariate analysis was conducted using the t-test, ANOVA, Pearson correlation, and adjusted linear regression model was used (including variables caregivers: sex, age, economic indicator, and schooling; schoolchildren: sex and nutritional status). Results: study includes 596 children-caregiver dyads (309 boys and 287 girls). Among caregivers, 24.7% had experienced current depressive episodes, 38.7% had past depressive episodes, and 17.2% had GAD. We observed, after adjusted analysis, that having a caregiver in a current depressive episode, increases schoolchildren’s obesogenic behavior of, for FR at 0.235 points (β=0.235; CI95%=0.022-0.449;) and EOE at 0.337 points (β=0.337; CI95%=0.162-0.512). Conclusion: caregivers’ current depressive episodes were associated with higher averages of obesogenic eating behavior (caregiver-reported), both in consuming palatable food without feeling hungry (FR) and in increasing food intake in response to negative emotions (EOE).
DOI: 10.6084/m9.figshare.22268645
title: Flexible work as a rule in capitalism: conceptualization and theoretical-analytical propositions

description: Abstract This essay aims to explore flexible work in the context of flexible capitalism to propose a theoretical-analytical model of the different classifications of this phenomenon. From a critical literature review, we present fundamental problems - understanding the multiple manifestations of flexibility and how they affect workers and their productive practices. The proposed model comprises three interdependent analytical levels: contractual flexibility, functional flexibility, and workplace flexibility and flexitime. Each level has two subcategories that classify and analyze a work activity in terms of working arrangements, remuneration, tasks, autonomy, where work is accomplished, and work scheduling. Throughout this theoretical essay, we present an alternative definition to the concept of flexible work and argue that flexibilization is a phenomenon incompatible with the enhancement of the labor process in favor of workers and represents another movement of conflict between capital and labor. Therefore, flexibilization is configured in a mechanism of exploitation of workers and expansion of the labor force’s productivity in search of greater private accumulation of capital.
DOI: 10.6084/m9.figshare.22268645.v1
title: Flexible work as a rule in capitalism: conceptualization and theoretical-analytical propositions

description: Abstract This essay aims to explore flexible work in the context of flexible capitalism to propose a theoretical-analytical model of the different classifications of this phenomenon. From a critical literature review, we present fundamental problems - understanding the multiple manifestations of flexibility and how they affect workers and their productive practices. The proposed model comprises three interdependent analytical levels: contractual flexibility, functional flexibility, and workplace flexibility and flexitime. Each level has two subcategories that classify and analyze a work activity in terms of working arrangements, remuneration, tasks, autonomy, where work is accomplished, and work scheduling. Throughout this theoretical essay, we present an alternative definition to the concept of flexible work and argue that flexibilization is a phenomenon incompatible with the enhancement of the labor process in favor of workers and represents another movement of conflict between capital and labor. Therefore, flexibilization is configured in a mechanism of exploitation of workers and expansion of the labor force’s productivity in search of greater private accumulation of capital.
DOI: 10.6084/m9.figshare.22268648.v1
title: Agronomic characteristics and quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil

description: ABSTRACT Growing lettuce under high temperatures and light incidence, as in the Alagoas State hinterland, Brazil, induces early tasseling and decreases the quality of the product. Thus, the objective of this work was to evaluate the production and post-harvest quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil. A randomized block experimental design was used, with four replications. The treatments consisted of lettuce cultivars: Baba-de-Verão, Cinderela, Elba, Mônica, Solaris, and Veneranda. The winter crop was more favorable for plant diameter, except for Baba-de-Verão, whose performance was similar in both seasons and stood out in the summer. The winter crop resulted in better performance in plant height, stem diameter, and fresh matter yield, whereas summer plants reached larger number of leaves. The cultivar Mônica presented longer stem length, denoting lower tolerance to early tasseling and, therefore, it is not indicated to be grown in the region. The cultivar Baba-de-Verão (Lisa group) reached higher fresh matter yield, number of leaves per plant, and stem diameter, and it was the most adequate cultivar to be grown in western Alagoas. Elba, Solaris, and Veneranda were the lettuce cultivars from the Crespa group that stood out. Baba-de-Verão was the cultivar that presented the best performance for chlorophyll a, b, and total. The cultivar Solaris presented the highest carotenoid contents. Plants grown in the winter reached higher chlorophyll a and total, carotenoid contents, pH, and soluble solid (SS) to titratable acidity (TA) ratio, whereas the lettuce grown in the summer had higher SS and TA.
DOI: 10.6084/m9.figshare.22268648
title: Agronomic characteristics and quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil

description: ABSTRACT Growing lettuce under high temperatures and light incidence, as in the Alagoas State hinterland, Brazil, induces early tasseling and decreases the quality of the product. Thus, the objective of this work was to evaluate the production and post-harvest quality of lettuce cultivars in different crop seasons in western Alagoas, Brazil. A randomized block experimental design was used, with four replications. The treatments consisted of lettuce cultivars: Baba-de-Verão, Cinderela, Elba, Mônica, Solaris, and Veneranda. The winter crop was more favorable for plant diameter, except for Baba-de-Verão, whose performance was similar in both seasons and stood out in the summer. The winter crop resulted in better performance in plant height, stem diameter, and fresh matter yield, whereas summer plants reached larger number of leaves. The cultivar Mônica presented longer stem length, denoting lower tolerance to early tasseling and, therefore, it is not indicated to be grown in the region. The cultivar Baba-de-Verão (Lisa group) reached higher fresh matter yield, number of leaves per plant, and stem diameter, and it was the most adequate cultivar to be grown in western Alagoas. Elba, Solaris, and Veneranda were the lettuce cultivars from the Crespa group that stood out. Baba-de-Verão was the cultivar that presented the best performance for chlorophyll a, b, and total. The cultivar Solaris presented the highest carotenoid contents. Plants grown in the winter reached higher chlorophyll a and total, carotenoid contents, pH, and soluble solid (SS) to titratable acidity (TA) ratio, whereas the lettuce grown in the summer had higher SS and TA.
DOI: 10.6084/m9.figshare.22268649
title: Divergence among mother trees of Handroanthus serratifolius (Vahl) S. O. Grose regarding seed quality traits

description: ABSTRACT Environmental influences and genetic variability can promote, within the same species, variations between plants with intrinsic traits to the seeds. This work aimed at investigating the divergence among Handroanthus serratifolius mother trees from traits related to the physiological quality of seeds. Seeds collected from 13 mother trees were submitted to tests germination, electrical conductivity (EC), cold, controlled deterioration, and accelerated aging. Five replications of 50 and 25 seeds each were used for the cold test and other tests, respectively. The average data per mother tree were submitted to cluster analysis by the methods of Ward, k-means, and Principal Component Analysis (PCA). The mother trees were grouped into 4 clusters by the Ward’s and K-means methods, and confirmed by the PCA, but with varying cluster compositions. Cluster 2 grouped the mother trees with lower seed quality as demonstrated by the lowest values for most of the evaluated traits, but the highest EC and the second-highest value for the germination uncertainty index. On the other hand, cluster 4 grouped the mother trees with better seed quality. Of the 22 evaluated traits, eight are probably suitable for discarding due to their little contribution to the original variability. The results of the different clustering methods indicate significant differences between the mother trees regarding the physiological quality of seeds, showing that these parameters may be used to guide breeding programs aiming to produce high-quality seeds and seedlings of H. serratifolius.
DOI: 10.6084/m9.figshare.22268649.v1
title: Divergence among mother trees of Handroanthus serratifolius (Vahl) S. O. Grose regarding seed quality traits

description: ABSTRACT Environmental influences and genetic variability can promote, within the same species, variations between plants with intrinsic traits to the seeds. This work aimed at investigating the divergence among Handroanthus serratifolius mother trees from traits related to the physiological quality of seeds. Seeds collected from 13 mother trees were submitted to tests germination, electrical conductivity (EC), cold, controlled deterioration, and accelerated aging. Five replications of 50 and 25 seeds each were used for the cold test and other tests, respectively. The average data per mother tree were submitted to cluster analysis by the methods of Ward, k-means, and Principal Component Analysis (PCA). The mother trees were grouped into 4 clusters by the Ward’s and K-means methods, and confirmed by the PCA, but with varying cluster compositions. Cluster 2 grouped the mother trees with lower seed quality as demonstrated by the lowest values for most of the evaluated traits, but the highest EC and the second-highest value for the germination uncertainty index. On the other hand, cluster 4 grouped the mother trees with better seed quality. Of the 22 evaluated traits, eight are probably suitable for discarding due to their little contribution to the original variability. The results of the different clustering methods indicate significant differences between the mother trees regarding the physiological quality of seeds, showing that these parameters may be used to guide breeding programs aiming to produce high-quality seeds and seedlings of H. serratifolius.
DOI: 10.6084/m9.figshare.22268652
title: Dynamics of plant organic matter decomposition in different agricultural landscapes

description: ABSTRACT The functioning of ecosystems or agroecosystems is mainly dependent on the soil-litterfall interaction. Thus, the objective of this work was to evaluate the effect of different soil use and management systems on the dynamics of decomposition of plant residues of Azadirachta indica (neem) and Gliricidia sepium (gliricidia). The study was conducted in four land occupation systems, namely: remaining forest, agroforestry, agricultural mandala, and pasture. The decomposition rate was estimated using nylon bags (litter bags), containing 20 g of leaves of A. indica and G. sepium, which were arranged on the soil surface of each area for 18, 36, 54, 72, 90, and 108 days. A completely randomized design was used for each species, considering each area as one treatment, with four replications for each collection. The data were subjected to regression analysis and the means were compared by the Tukey's test (p&lt;0.05). More than 85% and 90% of A. indica and G. sepium plant matters, respectively, had been decomposed after 108 days, regardless of the system evaluated, denoting that these species present high decomposition rates. The phytomass half-life time varied from 16 to 23 days for G. sepium and from 25 to 37 days for A. indica, depending on the land use system. Edaphic temperature, soil water content, and leaf physical and chemical characteristics are weight loss predictors. The results provide important information to enable forest management practices.