cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.20011234
title: Water-retaining polymer and seedling type when planting irrigated coffee

description: ABSTRACT The aim of this work was to evaluate the use of a water-retaining polymer on the initial growth of coffee plants for different levels of irrigation and types of seedling. The experiment was set up in pots with a clayey soil, in a greenhouse of the Sector for Coffee Production of the Federal University of Lavras, Brazil. The experiment was arranged in a randomised block design into sub-lots with three replications, giving a total of 48 experimental units. Four levels of irrigation (25%, 50%, 75% and 100% of the available water) were randomly assigned to the lots; the type of seedling (grown in bags or tubes) were randomly assigned to the sub-lots, and the use or not of the water-retaining polymer randomly assigned to the sub-sub-lots. In the treatments with water-retaining polymer, a dilution of 1.5 Kg of polymer to 400 litres of water was used at a dose of 1.5 litres of solution per plant. The following were evaluated at intervals of 60 days during the experiment (360 days from planting): stem diameter, plant height, leaf area, number of leaves and number of plagiotropic branches on the coffee plants. Hydrated water-retaining polymer favoured the growth of coffee plants under an irrigated system. Irrigation resulted in greater plant growth, with the seedlings grown in bags showing more growth than those grown in tubes.
DOI: 10.6084/m9.figshare.20011234.v1
title: Water-retaining polymer and seedling type when planting irrigated coffee

description: ABSTRACT The aim of this work was to evaluate the use of a water-retaining polymer on the initial growth of coffee plants for different levels of irrigation and types of seedling. The experiment was set up in pots with a clayey soil, in a greenhouse of the Sector for Coffee Production of the Federal University of Lavras, Brazil. The experiment was arranged in a randomised block design into sub-lots with three replications, giving a total of 48 experimental units. Four levels of irrigation (25%, 50%, 75% and 100% of the available water) were randomly assigned to the lots; the type of seedling (grown in bags or tubes) were randomly assigned to the sub-lots, and the use or not of the water-retaining polymer randomly assigned to the sub-sub-lots. In the treatments with water-retaining polymer, a dilution of 1.5 Kg of polymer to 400 litres of water was used at a dose of 1.5 litres of solution per plant. The following were evaluated at intervals of 60 days during the experiment (360 days from planting): stem diameter, plant height, leaf area, number of leaves and number of plagiotropic branches on the coffee plants. Hydrated water-retaining polymer favoured the growth of coffee plants under an irrigated system. Irrigation resulted in greater plant growth, with the seedlings grown in bags showing more growth than those grown in tubes.
DOI: 10.25452/figshare.plus.19324118
title: Testing Cohort Slide Images for "Intratumoral resolution of driver gene mutation heterogeneity in renal cancer using deep learning"

description: This item contains whole slide images (in SVS format) of the tissue microarray slides used as testing cohorts in the paper "Intratumoral resolution of driver gene mutation heterogeneity in renal cancer using deep learning" by Acosta et al, in Cancer Research (<sub>https://doi.org/10.1158/0008-5472.CAN-21-2318</sub>). This work demonstrates that deep learning (DL) models can predict the intratumor heterogeneity in driver mutation status purely from Hematoxylin and Eosin (H&E) stained slides. <br> Specifically, we trained and validated DL models that predict the status of three of the most frequently mutated driver genes (BAP1, PBRM1, and SETD2) in clear cell renal cell carcinoma. The DL models were trained on a large cohort of whole slide images (N=1282, referred to as WSI cohort in the paper/code) and tested on several independent cohorts including the TCGA KIRC (N=363 patients), two human tissue microarray (TMA) cohorts (referred to as TMA1 with 118 patients and TMA2 with 365 patients respectively) and a patient-derived xenograft TMA (referred to as PDX1). <br> The current dataset contains the whole slide images for the TMA cohorts (TMA1, TMA2 and PDX1). <br> See related materials in collection at: https://doi.org/10.25452/figshare.plus.c.5983795
DOI: 10.6084/m9.figshare.20011235.v1
title: Conditioning temperature for inducing uniform ripening of 'Abate Fetel' pears

description: ABSTRACT The aim of this study was to determine the conditioning temperature period for inducing uniform ripening of 'Abate Fetel' pears as well as to determine the maximum storage period with no quality loss. Three harvests were carried out at weekly intervals and each harvest date was considered a factorial experiment (7x3), with seven storage periods at 0 ± 1 ºC and 90 ± 5% relative humidity (0; 20; 40; 60; 80; 100 and 120 days) and three periods at room temperature (20 ± 1 ºC) (zero, three and six days). The assessed quality attributes were flesh firmness, starch content, weight loss and soluble solids content. Acceptance and purchase intention sensory tests were carried out. Cold storage was efficient in inducing uniform ripening in 'Abate Fetel' pears after 20 days at low temperature followed by six days at room temperature for fruit from the three harvest dates. 'Abate Fetel' pears harvested at harvest maturity of 57 N can be stored for up to 120 days and commercialized within six days with no quality loss. However, fruit harvested at flesh firmness below 55 N can be stored for 80 days and commercialized within six days or stored for 100 days and commercialized within three days.
DOI: 10.6084/m9.figshare.20011235
title: Conditioning temperature for inducing uniform ripening of 'Abate Fetel' pears

description: ABSTRACT The aim of this study was to determine the conditioning temperature period for inducing uniform ripening of 'Abate Fetel' pears as well as to determine the maximum storage period with no quality loss. Three harvests were carried out at weekly intervals and each harvest date was considered a factorial experiment (7x3), with seven storage periods at 0 ± 1 ºC and 90 ± 5% relative humidity (0; 20; 40; 60; 80; 100 and 120 days) and three periods at room temperature (20 ± 1 ºC) (zero, three and six days). The assessed quality attributes were flesh firmness, starch content, weight loss and soluble solids content. Acceptance and purchase intention sensory tests were carried out. Cold storage was efficient in inducing uniform ripening in 'Abate Fetel' pears after 20 days at low temperature followed by six days at room temperature for fruit from the three harvest dates. 'Abate Fetel' pears harvested at harvest maturity of 57 N can be stored for up to 120 days and commercialized within six days with no quality loss. However, fruit harvested at flesh firmness below 55 N can be stored for 80 days and commercialized within six days or stored for 100 days and commercialized within three days.
DOI: 10.6084/m9.figshare.20011246
title: Transmission of tenocarpella maydis by maize seeds

description: ABSTRACT tenocarpella maydis is one of the main fungi associated with maize seeds, being a causative agent of stalk and ear rot, a disease which causes considerable losses for crop-producing regions in Brazil. The organism is considered to be a pest, subject to sanitary standardisation in current programs of seed certification in the country. The aim of this study was to evaluate the transmission rate of the fungus from infected maize seeds. Seeds were inoculated with two isolates using a method of physiological conditioning, in which the seeds are kept in contact with colonies of the fungus for 24 (P1), 48 (P2), 72 (P3) and 96 (P4) hours. Two cultivars were used, one susceptible (C1) and one moderately resistant (C2), and the trial carried out at two temperatures (20 ºC and 25 ºC). The inoculated seeds were distributed individually into plastic cups containing substrate. The plants were evaluated daily for stand and the appearance of post-emergent symptoms. Based on the number of dead seeds, transmission rates reached a maximum of 90.5% at the P4 inoculum potential, this rate being greater than transmission rates achieved for symptomatic and asymptomatic infection in emerged plants. For the total transmission rate, transmission of the pathogen was seen at all inoculum potentials; these values varying from 25% for cultivar C2 at potential P1 and a temperature of 20 ºC, to 93% for cultivar C2 at potential P3 and a temperature of 25 ºC.
DOI: 10.6084/m9.figshare.20011246.v1
title: Transmission of tenocarpella maydis by maize seeds

description: ABSTRACT tenocarpella maydis is one of the main fungi associated with maize seeds, being a causative agent of stalk and ear rot, a disease which causes considerable losses for crop-producing regions in Brazil. The organism is considered to be a pest, subject to sanitary standardisation in current programs of seed certification in the country. The aim of this study was to evaluate the transmission rate of the fungus from infected maize seeds. Seeds were inoculated with two isolates using a method of physiological conditioning, in which the seeds are kept in contact with colonies of the fungus for 24 (P1), 48 (P2), 72 (P3) and 96 (P4) hours. Two cultivars were used, one susceptible (C1) and one moderately resistant (C2), and the trial carried out at two temperatures (20 ºC and 25 ºC). The inoculated seeds were distributed individually into plastic cups containing substrate. The plants were evaluated daily for stand and the appearance of post-emergent symptoms. Based on the number of dead seeds, transmission rates reached a maximum of 90.5% at the P4 inoculum potential, this rate being greater than transmission rates achieved for symptomatic and asymptomatic infection in emerged plants. For the total transmission rate, transmission of the pathogen was seen at all inoculum potentials; these values varying from 25% for cultivar C2 at potential P1 and a temperature of 20 ºC, to 93% for cultivar C2 at potential P3 and a temperature of 25 ºC.
DOI: 10.6084/m9.figshare.20011247
title: Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

description: ABSTRACT This study evaluated the effect of salt stress on the growth of banana seedling colonized with mycorrhizal fungi (AMF) on a substrate from a Quartzipsamment. The experiment was conducted in a greenhouse, using a completely randomized design in split plots; the plots had 5 levels of salinity in irrigation water (0.5, 1.5, 2.5, 3.5 and 4 5 dS m-1) and the subplots of four collection periods (40, 60, 80 and 100 days after transplanting), with 4 repetitions, totaling 80 experimental units. The seedlings of banana cv. "Prata" was produced by micropropagation and inoculated with arbuscular mycorrhizal and acclimatization for 40 days. Evaluations were made of leaf gas exchange, shoot dry mass, nutrient content, mycorrhizal root colonization and spore density. Increased levels of salinity caused reduction in dry matter production and photosynthetic rate, which may be associated with osmotic effects of salts in the soil, the increase in sodium and reduced the levels of N in leaves. Salinity reduced root mycorrhizal colonization, but did not influence the density of AMF spores under the conditions of this study.
DOI: 10.6084/m9.figshare.20011247.v1
title: Influence of salinity on the development of the banana colonised by arbuscular mycorrhizal fungi

description: ABSTRACT This study evaluated the effect of salt stress on the growth of banana seedling colonized with mycorrhizal fungi (AMF) on a substrate from a Quartzipsamment. The experiment was conducted in a greenhouse, using a completely randomized design in split plots; the plots had 5 levels of salinity in irrigation water (0.5, 1.5, 2.5, 3.5 and 4 5 dS m-1) and the subplots of four collection periods (40, 60, 80 and 100 days after transplanting), with 4 repetitions, totaling 80 experimental units. The seedlings of banana cv. "Prata" was produced by micropropagation and inoculated with arbuscular mycorrhizal and acclimatization for 40 days. Evaluations were made of leaf gas exchange, shoot dry mass, nutrient content, mycorrhizal root colonization and spore density. Increased levels of salinity caused reduction in dry matter production and photosynthetic rate, which may be associated with osmotic effects of salts in the soil, the increase in sodium and reduced the levels of N in leaves. Salinity reduced root mycorrhizal colonization, but did not influence the density of AMF spores under the conditions of this study.
DOI: 10.6084/m9.figshare.20011249
title: Physical quality of a Latosol under no-tillage and conventional tillage in the semi-arid region

description: ABSTRACT An evaluation was made of the physical quality of a sand-clay Red-Yellow Latosol loam in the semi-arid region, cultivated under no-tillage (SPD) and conventional tillage (SPC) systems under different soil cover. The experiment was set up in a single plot (18 x 18 m) for each of the six treatments: two cropping systems and three crops (maize, sunflower and sorghum) planted in the summer, ahead of the beans sown in the autumn/winter, with the native forest (MN) as control. Litter on the soil surface, soil penetration resistance, total organic carbon, aggregate stability in water, soil bulk density, macropores, micropores, total porosity and water retention were evaluated at depths of 0.00 to 0.05, 0.05 to 0.10, 0.10 to 0.20 and 0.20 to 0.40 m. The best physical indicators of soil quality under semi-arid conditions were found in the soil under no-tillage and grass. No-tillage keeps soil aggregation at a level similar to that of MN, whereas under conventional tillage, aggregation and carbon input are reduced in the soil. Grasses under no-tillage increase the carbon content of the soil, due to a greater production of litter compared to the sunflower. No-tillage causes greater surface soil compaction than conventional tillage but has no effect on water retention. The treatments had no effect on any of the attributes at the depth of 0.20 to 0.40 m.
DOI: 10.6084/m9.figshare.20011249.v1
title: Physical quality of a Latosol under no-tillage and conventional tillage in the semi-arid region

description: ABSTRACT An evaluation was made of the physical quality of a sand-clay Red-Yellow Latosol loam in the semi-arid region, cultivated under no-tillage (SPD) and conventional tillage (SPC) systems under different soil cover. The experiment was set up in a single plot (18 x 18 m) for each of the six treatments: two cropping systems and three crops (maize, sunflower and sorghum) planted in the summer, ahead of the beans sown in the autumn/winter, with the native forest (MN) as control. Litter on the soil surface, soil penetration resistance, total organic carbon, aggregate stability in water, soil bulk density, macropores, micropores, total porosity and water retention were evaluated at depths of 0.00 to 0.05, 0.05 to 0.10, 0.10 to 0.20 and 0.20 to 0.40 m. The best physical indicators of soil quality under semi-arid conditions were found in the soil under no-tillage and grass. No-tillage keeps soil aggregation at a level similar to that of MN, whereas under conventional tillage, aggregation and carbon input are reduced in the soil. Grasses under no-tillage increase the carbon content of the soil, due to a greater production of litter compared to the sunflower. No-tillage causes greater surface soil compaction than conventional tillage but has no effect on water retention. The treatments had no effect on any of the attributes at the depth of 0.20 to 0.40 m.
DOI: 10.6084/m9.figshare.20011250
title: Defining parameters for the Hargreaves-Samani equation for estimating reference evapotranspiration in the State of Ceará, Brazil

description: ABSTRACT The Hargreaves-Samani model is used in estimating reference evapotranspiration, and is very useful for irrigation management; it is considered to be of practical use as it uses meteorological elements, which are easily obtained, such as temperature. However, the equation is in need of regional calibration in order to accurately estimate evapotranspiration. The aim of this work was to calibrate the Hargreaves-Samani model for the State of Ceará, using meteorological data from 12 cities. The empirical parameters α (0.0023) and β (0.5) were calibrated considering two processes: firstly, the simultaneous calibration of the two parameters, and then only the α coefficient. The simultaneous calibration returned a variation in the extreme values for three cities; α ranged from 0.0004 (Campos Sales and Crateús) to 0.0019 (Guaramiranga), and exponent β varied between 0.51 (Guaramiranga) to 1.1977 (Campos Sales). The correlation between the Hargreaves-Samani model calibrated with the Penman-Monteith equation, had a maximum value for the city of Jaguaruana, 0.934 when calibrated with the two parameters, and 0.942 when calibrated with the α coefficient only, demonstrating that calibration of the Hargreaves-Samani equation is viable, and is necessary for improving estimates of evapotranspiration.
DOI: 10.6084/m9.figshare.20011250.v1
title: Defining parameters for the Hargreaves-Samani equation for estimating reference evapotranspiration in the State of Ceará, Brazil

description: ABSTRACT The Hargreaves-Samani model is used in estimating reference evapotranspiration, and is very useful for irrigation management; it is considered to be of practical use as it uses meteorological elements, which are easily obtained, such as temperature. However, the equation is in need of regional calibration in order to accurately estimate evapotranspiration. The aim of this work was to calibrate the Hargreaves-Samani model for the State of Ceará, using meteorological data from 12 cities. The empirical parameters α (0.0023) and β (0.5) were calibrated considering two processes: firstly, the simultaneous calibration of the two parameters, and then only the α coefficient. The simultaneous calibration returned a variation in the extreme values for three cities; α ranged from 0.0004 (Campos Sales and Crateús) to 0.0019 (Guaramiranga), and exponent β varied between 0.51 (Guaramiranga) to 1.1977 (Campos Sales). The correlation between the Hargreaves-Samani model calibrated with the Penman-Monteith equation, had a maximum value for the city of Jaguaruana, 0.934 when calibrated with the two parameters, and 0.942 when calibrated with the α coefficient only, demonstrating that calibration of the Hargreaves-Samani equation is viable, and is necessary for improving estimates of evapotranspiration.
DOI: 10.6084/m9.figshare.20011252.v1
title: Competitive ability with weeds during the establishment of aries grass: morphological characteristics

description: ABSTRACT The aim of this research was to evaluate interspecific competition in Panicum maximum cv. Aries during the establishment period, studying the factors of shading and nitrogen levels. The levels of shading caused by the weeds ranged from 0% and 40% to 70% and 60% with no nitrogen and in the presence of nitrogen. Analyses were made of plant height, tiller dynamics, leaf area index (IAF), dry matter, senescent leaf material and relative competition intensity (ICR) in P. maximum cv. Aries when with weeds. The data were submitted to tests for homogeneity of variance and residual normality; analysis of variance (ANOVA), Tukey's mean difference test at 5% probability, and regression analysis were then carried out. The morphological and yield characteristics of P. maximum cv. Aries responded better where there was no interference from the weeds. Nitrogen contributed to greater development in P. maximum cv. Aries, but when coexisting with the uncut weeds, the weeds dominated the P. maximum cv. Aries. Cutting the weeds caused a reduction in the intensity of interspecific competition. The variable conditions of shade over time express different morphological responses in comparison to a homogeneous situation, mainly interfering in the speed of establishment of P. maximum cv. Aries.
DOI: 10.6084/m9.figshare.20011252
title: Competitive ability with weeds during the establishment of aries grass: morphological characteristics

description: ABSTRACT The aim of this research was to evaluate interspecific competition in Panicum maximum cv. Aries during the establishment period, studying the factors of shading and nitrogen levels. The levels of shading caused by the weeds ranged from 0% and 40% to 70% and 60% with no nitrogen and in the presence of nitrogen. Analyses were made of plant height, tiller dynamics, leaf area index (IAF), dry matter, senescent leaf material and relative competition intensity (ICR) in P. maximum cv. Aries when with weeds. The data were submitted to tests for homogeneity of variance and residual normality; analysis of variance (ANOVA), Tukey's mean difference test at 5% probability, and regression analysis were then carried out. The morphological and yield characteristics of P. maximum cv. Aries responded better where there was no interference from the weeds. Nitrogen contributed to greater development in P. maximum cv. Aries, but when coexisting with the uncut weeds, the weeds dominated the P. maximum cv. Aries. Cutting the weeds caused a reduction in the intensity of interspecific competition. The variable conditions of shade over time express different morphological responses in comparison to a homogeneous situation, mainly interfering in the speed of establishment of P. maximum cv. Aries.
DOI: 10.6084/m9.figshare.20011253
title: Vigour in maize seeds: influence on seedling development under conditions of salt stress

description: ABSTRACT Using seeds of high vigour can be a strategy to reduce problems in the development of seedlings, and allow adequate stand establishment under different environmental conditions, especially under conditions of stress, such as salt stress. Accordingly, the aim of this work was to evaluate the influence of vigour in maize seeds on germination performance and seedling development when exposed to different levels of salt stress. Seeds from cultivars of two single hybrids were used, each in four batches; initially, water content and seedling emergence in the field were determined. To verify vigour behaviour, 200 seeds were planted on a roll of paper towelling moistened with different solutions of NaCl in five concentrations (0, 25, 50, 75 and 100 mol m-3). The variables being analysed were: germination percentage, length of shoot and root, root volume and seedling dry matter. At the concentrations under test, seed vigour had no effect on germination in the maize seeds exposed to salt stress; there was however a positive effect on seedling development up to the concentration of 50 mol NaCl m-3 (EC 5.11≤dS m-1). The variables of root volume and seedling dry weight are the most suitable for evaluating the effect of salt stress on development in maize seedlings.