cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5792418
title: Characteristics of muskmelon fruits in relation to temporary row cover and the number of fruits

description: ABSTRACT The muskmelon plants allow several ways to manipulate sources/drains ratio. The objective of this work was to evaluate characteristics of the productivity and quality of Cantaloupe melon fruits due to the temporary use of row cover and the number of fruits per plant. The experiment was carried out from August to December 2014, at Universidade Federal de Campina Grande (UFCG), Paraiba State, Brazil. The experimental design was randomized blocks with treatments allocated in split plots 5x3, with four replicates. The authors reported permanence time of the row cover at different times in the plot {20, 24, 28, 32, and 36 days after transplanting (DAT)} and, in the subplots, the number of fruits per plant (plants with one fruit, plants with two fruits and fruit-free setting plants). The authors evaluated traits of production and quality of fruits. The permanence time of row cover and number of fruits per plant promoted changes in the productivity and quality of the muskmelon fruits. The permanence of the row cover from 20 to 36 DAT provided reduction in the total soluble solids. The average fruit mass and fruit yield reached the maximum value with the permanence of the row cover up to 26.6 and 25.1 DAT, respectively. Plants with one and two fruits presented higher average fruit mass, but with lower productivity compared to the plant with fruit-free setting.
DOI: 10.6084/m9.figshare.5792418.v1
title: Characteristics of muskmelon fruits in relation to temporary row cover and the number of fruits

description: ABSTRACT The muskmelon plants allow several ways to manipulate sources/drains ratio. The objective of this work was to evaluate characteristics of the productivity and quality of Cantaloupe melon fruits due to the temporary use of row cover and the number of fruits per plant. The experiment was carried out from August to December 2014, at Universidade Federal de Campina Grande (UFCG), Paraiba State, Brazil. The experimental design was randomized blocks with treatments allocated in split plots 5x3, with four replicates. The authors reported permanence time of the row cover at different times in the plot {20, 24, 28, 32, and 36 days after transplanting (DAT)} and, in the subplots, the number of fruits per plant (plants with one fruit, plants with two fruits and fruit-free setting plants). The authors evaluated traits of production and quality of fruits. The permanence time of row cover and number of fruits per plant promoted changes in the productivity and quality of the muskmelon fruits. The permanence of the row cover from 20 to 36 DAT provided reduction in the total soluble solids. The average fruit mass and fruit yield reached the maximum value with the permanence of the row cover up to 26.6 and 25.1 DAT, respectively. Plants with one and two fruits presented higher average fruit mass, but with lower productivity compared to the plant with fruit-free setting.
DOI: 10.6073/pasta/a8c8659af399b7cfdd698b578ed6ab93
title: Jornada Basin LTER Cross-scale Interactions Study (CSIS) Block 3 meteorological station: Daily summary data: 2013 - ongoing

description: This data package contains hourly air temperature, relative humidity, wind speed, wind direction, and precipitation summary data from Jornada Basin LTER Cross Scale Interactions Study (CSIS) Block-3 met station. Air temperature, relative humidity, wind speed, wind direction, and precipitation are measured and calculated at an automated meteorological station connected to a 900 MHz spread spectrum wireless network. Wind speed is measured at 37cm, 75 cm, 150 cm, and 300 cm, wind direction at approximately 3m, and air temperature and relative humidity at approximate 2.5m. Measurements are aggregated at intervals of 5, 30, 60 minutes and daily, with precipitation additionally provided with 1 second aggregation during precipitation events. The met station variables measured include air temperature, precipitation, relative humidity, wind direction, wind speed. Precipitation is not measured at Block 1 and Block 12 because of proximity to Block 2 and Block 13, respectively . This is an ONGOING dataset.
DOI: 10.6084/m9.figshare.5792694
title: Yield of organic potato cultivars in the subtropical region of Brazil

description: ABSTRACT The cultivar selection is fundamental to reach high potato yield in the organic production system. The objective of this work was to evaluate tuber yield and yield components and make suggestion for organic production system in South region of Brazil. The experiment was carried out in two crop seasons, 2013/2014 and 2014/2015, three trials, in Guarapuava, Paraná State and Caseiros, Rio Grande do Sul State, Brazil. Eight cultivars were evaluated (Agata, Clara, Eliza, Catucha, Aracy Ruiva, Itararé, Vitória and Cris) for total and marketable tuber yield, number of total and marketable tubers, and percentage of tuber dry matter content. A completely randomized block design in a split plot scheme, with trials as main plot and cultivars in sub plot, and four replications was used. The total and marketable yield varied according to the trial, however ‘Catucha’ stayed always in the group of high yielding cultivars, reaching around 28 and 23 t/ha of total and marketable yield, respectively. The relatively high yield of this cultivar was mainly due to high number of tubers, around eight and four/plant, total and marketable tubers, respectively. Moreover, this cultivar had the tubers with higher percentage of tuber dry matter content in all three trials (25; 16 and 21% in the trials 1; 2 and 3, respectively). Therefore, ‘Catucha’ is one of the suggested cultivars for the organic potato system in region of subtropical climate in Brazil.
DOI: 10.6084/m9.figshare.5792694.v1
title: Yield of organic potato cultivars in the subtropical region of Brazil

description: ABSTRACT The cultivar selection is fundamental to reach high potato yield in the organic production system. The objective of this work was to evaluate tuber yield and yield components and make suggestion for organic production system in South region of Brazil. The experiment was carried out in two crop seasons, 2013/2014 and 2014/2015, three trials, in Guarapuava, Paraná State and Caseiros, Rio Grande do Sul State, Brazil. Eight cultivars were evaluated (Agata, Clara, Eliza, Catucha, Aracy Ruiva, Itararé, Vitória and Cris) for total and marketable tuber yield, number of total and marketable tubers, and percentage of tuber dry matter content. A completely randomized block design in a split plot scheme, with trials as main plot and cultivars in sub plot, and four replications was used. The total and marketable yield varied according to the trial, however ‘Catucha’ stayed always in the group of high yielding cultivars, reaching around 28 and 23 t/ha of total and marketable yield, respectively. The relatively high yield of this cultivar was mainly due to high number of tubers, around eight and four/plant, total and marketable tubers, respectively. Moreover, this cultivar had the tubers with higher percentage of tuber dry matter content in all three trials (25; 16 and 21% in the trials 1; 2 and 3, respectively). Therefore, ‘Catucha’ is one of the suggested cultivars for the organic potato system in region of subtropical climate in Brazil.
DOI: 10.6084/m9.figshare.6124556.v1
title: Breeding potatoes for resistance to bacterial blight in Brazil: a quick review in face of a more effective screening protocol

description: ABSTRACT Bacterial wilt (BW), caused by Ralstonia solanacearum, is one of the most important diseases of potato (Solanum tuberosum subsp. tuberosum) in Brazil and the main cause of rejection of fields for tuber seed certification. Genetic resistance is not a feasible control currently since no commercially-appealing BW resistant cultivars are available. The development of resistant cultivars is challenging due to the genetic complexity of resistance, pathogen variability, lack of resistance sources in the species, and the tetraploid background of the crop. In addition, to date, only field selection has been effective in identifying stable resistance in progenies derived from crosses involving resistant wild relatives. Field selection is laborious and demands uniformly infested fields. After many years of germplasm breeding, we succeeded in developing two resistant clones, MB-03 and MB9846-01, both producing tubers with rather reasonable characteristics. These clones are being crossed with elite genotypes. To speed up progeny evaluation, we developed a straightforward screening protocol in greenhouse conditions, based on selection at the seedling stage. The methodology is presented and discussed here. Briefly, the early selection was very effective to screen a large number of seedlings in a rather short period of time. It considerably increased the rates of selection of resistant clones in the field when compared to selection directly in the field, without the prior greenhouse seedling stage. Nevertheless, field selection remains crucial for confirming resistance, testing for genotype-environment interaction and evaluating agronomic and tuber characteristics. Among the resistant clones previously identified in our program, progenies of clone MB9846-01 resulted in higher selection indexes in the field (BW resistance + tuber characteristics) than those of clone MB-03 when both clones were crossed with the susceptible cultivar Baraka. We adjusted the protocol to allow screening around 5,000 seedlings per year, counting with eight part-time workers, four in the laboratory/screenhouse and four in the field in critical periods.
DOI: 10.6084/m9.figshare.6124556
title: Breeding potatoes for resistance to bacterial blight in Brazil: a quick review in face of a more effective screening protocol

description: ABSTRACT Bacterial wilt (BW), caused by Ralstonia solanacearum, is one of the most important diseases of potato (Solanum tuberosum subsp. tuberosum) in Brazil and the main cause of rejection of fields for tuber seed certification. Genetic resistance is not a feasible control currently since no commercially-appealing BW resistant cultivars are available. The development of resistant cultivars is challenging due to the genetic complexity of resistance, pathogen variability, lack of resistance sources in the species, and the tetraploid background of the crop. In addition, to date, only field selection has been effective in identifying stable resistance in progenies derived from crosses involving resistant wild relatives. Field selection is laborious and demands uniformly infested fields. After many years of germplasm breeding, we succeeded in developing two resistant clones, MB-03 and MB9846-01, both producing tubers with rather reasonable characteristics. These clones are being crossed with elite genotypes. To speed up progeny evaluation, we developed a straightforward screening protocol in greenhouse conditions, based on selection at the seedling stage. The methodology is presented and discussed here. Briefly, the early selection was very effective to screen a large number of seedlings in a rather short period of time. It considerably increased the rates of selection of resistant clones in the field when compared to selection directly in the field, without the prior greenhouse seedling stage. Nevertheless, field selection remains crucial for confirming resistance, testing for genotype-environment interaction and evaluating agronomic and tuber characteristics. Among the resistant clones previously identified in our program, progenies of clone MB9846-01 resulted in higher selection indexes in the field (BW resistance + tuber characteristics) than those of clone MB-03 when both clones were crossed with the susceptible cultivar Baraka. We adjusted the protocol to allow screening around 5,000 seedlings per year, counting with eight part-time workers, four in the laboratory/screenhouse and four in the field in critical periods.
DOI: 10.6084/m9.figshare.19968153
title: Sanitizing action of triple-strength vinegar against Escherichia coli on lettuce

description: ABSTRACT Vegetable sanitization protocols recommend the use of chlorine, which has adverse effects on the environment and carcinogenic effects on humans. Acetic acid is an interesting alternative to chlorine because it possesses no risk to human health and is widely available in the form of vinegar. This study aimed to evaluate the sanitizing action of vinegar, 130 g L-1 total titratable acidity expressed as acetic acid, on lettuce. Vinegar was chosen because it is a low-cost product widely available in the Brazilian market. The minimum inhibitory concentration and minimum bactericidal concentration of vinegar against Escherichia coli were 2.5 and 15 g L-1 total acidity, respectively. Lettuce leaves artificially contaminated with E. coli or naturally contaminated with total coliforms were washed with water and immersed in vinegar solution (15 g L-1 total acidity) for 15 min. This period was sufficient to reduce E. coli counts in artificially contaminated samples and total coliforms in naturally contaminated samples. There were no visual changes in lettuce leaves, which indicates that vinegar at 15 g L-1 total acidity can be used to sanitize vegetables without affecting their appearance.
DOI: 10.6084/m9.figshare.19968153.v1
title: Sanitizing action of triple-strength vinegar against Escherichia coli on lettuce

description: ABSTRACT Vegetable sanitization protocols recommend the use of chlorine, which has adverse effects on the environment and carcinogenic effects on humans. Acetic acid is an interesting alternative to chlorine because it possesses no risk to human health and is widely available in the form of vinegar. This study aimed to evaluate the sanitizing action of vinegar, 130 g L-1 total titratable acidity expressed as acetic acid, on lettuce. Vinegar was chosen because it is a low-cost product widely available in the Brazilian market. The minimum inhibitory concentration and minimum bactericidal concentration of vinegar against Escherichia coli were 2.5 and 15 g L-1 total acidity, respectively. Lettuce leaves artificially contaminated with E. coli or naturally contaminated with total coliforms were washed with water and immersed in vinegar solution (15 g L-1 total acidity) for 15 min. This period was sufficient to reduce E. coli counts in artificially contaminated samples and total coliforms in naturally contaminated samples. There were no visual changes in lettuce leaves, which indicates that vinegar at 15 g L-1 total acidity can be used to sanitize vegetables without affecting their appearance.
DOI: 10.6084/m9.figshare.7215521
title: Biometric analysis in maize genotypes suitable for baby corn production in organic farming system

description: ABSTRACT The aim of this study was to estimate and quantify the degree of association between phytotechnical variables for simultaneous selection of maize genotypes suitable to produce baby corn. Seven genotypes were arranged in field in randomized complete block design with four replicates. Genetic parameters, simple, path and canonical correlations of phytotechnical variables were estimated. The variables production of marketable spikes, length of marketable spikes, final plant stand and plant height showed over 80% heritability and variation index higher than the unity, indicating that superior genotypes can be obtained and selection gains. Significant phenotypic and genotypic correlations were observed for production of marketable spikes, positive and of high magnitude with crude protein, dry mass and final plant stand. However, the direct effect between dry mass and production of marketable spikes was pronounced negative (-0.7085), whereas the phenotypic correlation was positive and showed medium magnitude (0.5343), which should be considered the indirect effect of final plant stand (0.7367), to take advantage of the gains of these two traits. The final plant stand is determinant to increase the production of dry matter and marketable spikes, both direct and indirectly. Given the data, we could identify promising variables for plant breeding which can be indicative to select maize genotypes for baby corn production.
DOI: 10.6084/m9.figshare.7215521.v1
title: Biometric analysis in maize genotypes suitable for baby corn production in organic farming system

description: ABSTRACT The aim of this study was to estimate and quantify the degree of association between phytotechnical variables for simultaneous selection of maize genotypes suitable to produce baby corn. Seven genotypes were arranged in field in randomized complete block design with four replicates. Genetic parameters, simple, path and canonical correlations of phytotechnical variables were estimated. The variables production of marketable spikes, length of marketable spikes, final plant stand and plant height showed over 80% heritability and variation index higher than the unity, indicating that superior genotypes can be obtained and selection gains. Significant phenotypic and genotypic correlations were observed for production of marketable spikes, positive and of high magnitude with crude protein, dry mass and final plant stand. However, the direct effect between dry mass and production of marketable spikes was pronounced negative (-0.7085), whereas the phenotypic correlation was positive and showed medium magnitude (0.5343), which should be considered the indirect effect of final plant stand (0.7367), to take advantage of the gains of these two traits. The final plant stand is determinant to increase the production of dry matter and marketable spikes, both direct and indirectly. Given the data, we could identify promising variables for plant breeding which can be indicative to select maize genotypes for baby corn production.
DOI: 10.6084/m9.figshare.7509320
title: Morphological, enzymatic and molecular characterization of root-knot nematodes parasitizing vegetable crops

description: ABSTRACT Species of the genus Meloidogyne are limiting factors in vegetable crop production. Studies in Brazil about the occurrence of root-knot nematodes in areas of vegetable crop growth have been conducted without using advanced techniques. Using modern techniques, such as biochemical and molecular methods, improves the accuracy of Meloidogyne species identification. The present study characterized species of Meloidogyne in 36 samples associated with vegetable crops using isoenzyme electrophoresis, SCAR markers, and morphological markers, in addition to validating SCAR markers for accurate species identification. The species M. incognita, M. javanica, M. hapla, M. morocciensis, and M. arenaria were identified, with the first two being the most frequent. Here, the species M. arenaria parasitizing scarlet eggplant and M. morocciensis parasitizing pumpkin and cabbage are reported in Brazil for the first time. Esterase electrophoresis efficiently separated the species of Meloidogyne found in vegetable crops; however, SCAR markers were only effective for the identification of M. incognita, M. javanica, and M. hapla, since the primer pair Far/Rar yielded no amplification product to confirm the identity of M. arenaria. The species M.arenaria and M. morocciensis could not be distinguished by the female perineal patterns. Based on the present results, new primers should be designed for the identification of M. arenaria and M. morocciensis.
DOI: 10.6084/m9.figshare.7509320.v1
title: Morphological, enzymatic and molecular characterization of root-knot nematodes parasitizing vegetable crops

description: ABSTRACT Species of the genus Meloidogyne are limiting factors in vegetable crop production. Studies in Brazil about the occurrence of root-knot nematodes in areas of vegetable crop growth have been conducted without using advanced techniques. Using modern techniques, such as biochemical and molecular methods, improves the accuracy of Meloidogyne species identification. The present study characterized species of Meloidogyne in 36 samples associated with vegetable crops using isoenzyme electrophoresis, SCAR markers, and morphological markers, in addition to validating SCAR markers for accurate species identification. The species M. incognita, M. javanica, M. hapla, M. morocciensis, and M. arenaria were identified, with the first two being the most frequent. Here, the species M. arenaria parasitizing scarlet eggplant and M. morocciensis parasitizing pumpkin and cabbage are reported in Brazil for the first time. Esterase electrophoresis efficiently separated the species of Meloidogyne found in vegetable crops; however, SCAR markers were only effective for the identification of M. incognita, M. javanica, and M. hapla, since the primer pair Far/Rar yielded no amplification product to confirm the identity of M. arenaria. The species M.arenaria and M. morocciensis could not be distinguished by the female perineal patterns. Based on the present results, new primers should be designed for the identification of M. arenaria and M. morocciensis.
DOI: 10.6084/m9.figshare.7518332
title: Multivariate techniques in the determination of genetic diversity in pest-resistant mini tomato genotypes

description: ABSTRACT The objective of this study was to compare methods of multivariate analysis on the evaluation of genetic diversity of mini tomato and to identify promising genotypes with resistance to pests. The experiment was conducted at the Vegetable Experiment Station of the Universidade Federal de Uberlândia, Monte Carmelo campus, from April 2013 to November 2016. The experimental design was a randomized complete block design with 16 treatments and four replications totaling 64 plots, and each plot represented by five plants. Sixteen genotypes were characterized, 12 from the F2RC1 generation, obtained through the interspecific crossing between the wild access LA-716 (Solanum pennellii) and pre-commercial lines of mini tomato (UFU-73 and UFU-2) (Solanum lycopersicum) and the UFU-2 lines. The content of acyl sugar, the amount of glandular trichomes (types I, IV, VI and VII), twospotted spider mite and whitefly resistance were evaluated. We concluded that there exist genetic variability between the genotypes. The number of groups formed by the canonical variated analysis was higher (four groups) than that obtained by the Tocher method (three groups) and UPGMA (three groups), demonstrating a greater discrimination power. The Tocher and UPGMA methods were consistent in the analysis of the genetic divergence in pest resistant germplasm of tomato, with the acyl sugar content being the most important variable. Genotype UFU-73-F2RC1 # 11 is resistant to pest attack, while the other studied lines have intermediate resistance.