Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03299
Laís Barreto de Oliveira, Saulo Alves Santos de Oliveira, Ricardo Franco Cunha Moreira, Maria Selma Alves Silva Diamantino, Andresa Priscila de Souza Ramos, Taliane Leila Soares, Claudia Fortes Ferreira
Abstract The objective of this work was to evaluate the genetic diversity of Xanthomonas phaseoli p v. manihotis (Xpm) from eight populations from five cassava producing states in Brazil, through the rep-PCR (BOX-PCR and ERIC-PCR) and variable number of tandem repeat (VNTR) markers. Cassava leaves with symptoms of cassava bacterial blight were collected in eight municipalities, and the Xpm isolates were identified by amplification with primers specific for these isolates. The identity of the Xpm isolates was confirmed with the BOX-PCR, ERIC-PCR, and VNTR markers. The observed selection pressure, together with the mode of reproduction and the mechanisms that increase genetic variability, allows of the pathogen populations to adapt according to microclimate variation, contributing to a differentiated reproductive success. ERIC-PCR and VNTRs are the best markers for evaluating the genetic variability in the eight studied Xpm populations. However, ERIC-PCR is the marker that best separated the groups by population and presented a higher similarity between the isolates of the same population. The study of the genetic diversity of Xpm is key to improve disease monitoring and management strategies in cassava crops.
摘要采用BOX-PCR、ERIC-PCR和可变数目串联重复序列(VNTR)标记，对巴西5个木薯产地8个群体的相黄单胞菌(Xanthomonas phaseoli p . v. manihotis, Xpm)进行遗传多样性分析。在8个城市收集了具有木薯细菌性枯萎病症状的木薯叶片，用这些菌株的特异性引物扩增鉴定了Xpm分离株。采用BOX-PCR、ERIC-PCR和VNTR标记对Xpm分离株进行鉴定。观察到的选择压力，加上繁殖模式和增加遗传变异的机制，使病原体种群能够根据小气候的变化进行适应，从而有助于差异化的繁殖成功。ERIC-PCR和VNTRs是评价所研究的8个Xpm群体遗传变异的最佳标记。而ERIC-PCR是用群体区分群体效果最好的标记，且同一群体的分离物具有较高的相似性。研究Xpm的遗传多样性是提高木薯病害监测和管理策略的关键。
{"title":"Genetic diversity of Xanthomonas phaseoli p v. manihotis populations using rep-PCR and VNTR molecular markers","authors":"Laís Barreto de Oliveira, Saulo Alves Santos de Oliveira, Ricardo Franco Cunha Moreira, Maria Selma Alves Silva Diamantino, Andresa Priscila de Souza Ramos, Taliane Leila Soares, Claudia Fortes Ferreira","doi":"10.1590/s1678-3921.pab2023.v58.03299","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03299","url":null,"abstract":"Abstract The objective of this work was to evaluate the genetic diversity of Xanthomonas phaseoli p v. manihotis (Xpm) from eight populations from five cassava producing states in Brazil, through the rep-PCR (BOX-PCR and ERIC-PCR) and variable number of tandem repeat (VNTR) markers. Cassava leaves with symptoms of cassava bacterial blight were collected in eight municipalities, and the Xpm isolates were identified by amplification with primers specific for these isolates. The identity of the Xpm isolates was confirmed with the BOX-PCR, ERIC-PCR, and VNTR markers. The observed selection pressure, together with the mode of reproduction and the mechanisms that increase genetic variability, allows of the pathogen populations to adapt according to microclimate variation, contributing to a differentiated reproductive success. ERIC-PCR and VNTRs are the best markers for evaluating the genetic variability in the eight studied Xpm populations. However, ERIC-PCR is the marker that best separated the groups by population and presented a higher similarity between the isolates of the same population. The study of the genetic diversity of Xpm is key to improve disease monitoring and management strategies in cassava crops.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135260819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03290
Rosalba Contreras-Maya, Angel Villegas-Monter, Nicacio Cruz-Huerta, Amalio Santacruz-Varela, Laura D. Ortega-Arenas, Daniel-Leobardo Ochoa-Martínez
Abstract The objective of this work was to evaluate the photosynthetic response of citrus varieties to the inoculation of isolates T30 and T3 of Citrus tristeza virus (CTV) characterized as having potential to provide cross-protection against severe CTV isolates in citrus. Citrus plants of 'Campbell' orange, 'Persian' lime, and 'Key' lime were subjected to inoculations by both isolates by patch. Noninoculated plants were used as the control. Symptom expression, photosynthetic and transpiration rates, and stomatal conductance were evaluated by IRGA. Stomatal density and size were evaluated by epidermal impressions. The CTV isolates were also evaluated and molecularly characterized by RT-PCR and Sanger sequencing. 'Campbell' orange and 'Persian' lime plants remained asymptomatic after the inoculations. The inoculation treatments with both CTV isolates did not reduce photosynthetic capacity, transpiration rate, and stomatal conductance, in comparison with the control. Stomatal density and size varied according to the citrus species. T30 and T3 do not affect the photosynthetic responses of 'Campbell' orange and 'Persian' lime; therefore, these isolates have the potential to provide cross-protection to citrus varieties against severe isolates of CTV.
{"title":"Photosynthetic response of citrus to Citrus tristeza virus isolates with potential for cross-protection","authors":"Rosalba Contreras-Maya, Angel Villegas-Monter, Nicacio Cruz-Huerta, Amalio Santacruz-Varela, Laura D. Ortega-Arenas, Daniel-Leobardo Ochoa-Martínez","doi":"10.1590/s1678-3921.pab2023.v58.03290","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03290","url":null,"abstract":"Abstract The objective of this work was to evaluate the photosynthetic response of citrus varieties to the inoculation of isolates T30 and T3 of Citrus tristeza virus (CTV) characterized as having potential to provide cross-protection against severe CTV isolates in citrus. Citrus plants of 'Campbell' orange, 'Persian' lime, and 'Key' lime were subjected to inoculations by both isolates by patch. Noninoculated plants were used as the control. Symptom expression, photosynthetic and transpiration rates, and stomatal conductance were evaluated by IRGA. Stomatal density and size were evaluated by epidermal impressions. The CTV isolates were also evaluated and molecularly characterized by RT-PCR and Sanger sequencing. 'Campbell' orange and 'Persian' lime plants remained asymptomatic after the inoculations. The inoculation treatments with both CTV isolates did not reduce photosynthetic capacity, transpiration rate, and stomatal conductance, in comparison with the control. Stomatal density and size varied according to the citrus species. T30 and T3 do not affect the photosynthetic responses of 'Campbell' orange and 'Persian' lime; therefore, these isolates have the potential to provide cross-protection to citrus varieties against severe isolates of CTV.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135261258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03149
Ana Paula Binato de Souza, Jorge Schafhauser Junior, Rudolf Brand Scheibler, Ana Carolina Fluck, Fábio Antunes Rizzo, José Laerte Nörnberg, Diego Prado de Vargas, Lívia Argoud Lourenço
Abstract The objective of this work was to evaluate the effect of the addition of whole-crude oilseeds of linseed, sunflower, and soybean to the diet of Jersey cows, in the first third of lactation, on the following characteristics: intake, apparent nutrient digestibility, milk production and its variables, energy-corrected milk, feed efficiency, energy balance, milk fatty acid profile, and blood metabolic profile. Eight multiparous Jersey cows were used in a double Latin square design. The treatments were the experimental diets with the oilseeds, and calcium salts of fatty acids were used as the control. Protein digestibility was lower for soybean, whereas that of ether extract was higher in the control, not differing between the evaluated oilseeds. There was no difference between oilseeds for milk production, milk production corrected for fat, milk nutritional content, feed efficiency, energy balance, and blood metabolic profile. The levels of mil k monou n sat u rated fatty acids increased with the use of sunflower. Higher levels of cis-9, trans-11 conjugated linoleic acid (CLA) in milk were observed in the control. The addition of the evaluated whole-crude oilseeds to the diet of Jersey cows in the first third of lactation does not affect milk production variables, feed efficiency, energy balance, and blood biochemical profile, but alters the fatty acid profile.
{"title":"Supplementation with lipid sources in diets for Jersey cows in the first third of lactation","authors":"Ana Paula Binato de Souza, Jorge Schafhauser Junior, Rudolf Brand Scheibler, Ana Carolina Fluck, Fábio Antunes Rizzo, José Laerte Nörnberg, Diego Prado de Vargas, Lívia Argoud Lourenço","doi":"10.1590/s1678-3921.pab2023.v58.03149","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03149","url":null,"abstract":"Abstract The objective of this work was to evaluate the effect of the addition of whole-crude oilseeds of linseed, sunflower, and soybean to the diet of Jersey cows, in the first third of lactation, on the following characteristics: intake, apparent nutrient digestibility, milk production and its variables, energy-corrected milk, feed efficiency, energy balance, milk fatty acid profile, and blood metabolic profile. Eight multiparous Jersey cows were used in a double Latin square design. The treatments were the experimental diets with the oilseeds, and calcium salts of fatty acids were used as the control. Protein digestibility was lower for soybean, whereas that of ether extract was higher in the control, not differing between the evaluated oilseeds. There was no difference between oilseeds for milk production, milk production corrected for fat, milk nutritional content, feed efficiency, energy balance, and blood metabolic profile. The levels of mil k monou n sat u rated fatty acids increased with the use of sunflower. Higher levels of cis-9, trans-11 conjugated linoleic acid (CLA) in milk were observed in the control. The addition of the evaluated whole-crude oilseeds to the diet of Jersey cows in the first third of lactation does not affect milk production variables, feed efficiency, energy balance, and blood biochemical profile, but alters the fatty acid profile.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136302686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03298
Pedro Yuri Cavasin, Luiz Antônio Augusto Gomes, Wilson Vicente Souza Pereira, Heloisa Oliveira dos Santos
Abstract The objective of this work was to evaluate the occurrence of the maternal effect on thermotolerance in lettuce (Lactuca sativa) seeds, as well as to find an enzymatic marker for this trait in lettuce seedlings. Seeds from the Everglades thermotolerant cultivar, the Verônica susceptible cultivar, and their reciprocal hybrids were used. For each cultivar and reciprocal hybrid, germination percentage and vigor (germination speed index) tests were carried out at 20 and 32°C. Thermotolerance was defined as the capacity to germinate at 32°C. To obtain markers that could be associated with thermotolerance, enzymatic tests were performed. The bands of the electrophoretic enzymatic extracts were quantified using the ImageJ software. The hybrids behaved similarly to their female genitors. When cultivar Verônica was the female genitor, hybrid seeds did not germinate at high temperatures and showed a lower expression of the esterase enzyme. However, when the female genitor was the Everglades cultivar, hybrids showed a high germination at high temperatures and a greater esterase expression. Therefore, there is a maternal effect on tolerance to thermoinhibition in lettuce seeds, and the esterase enzyme can be used as a selective marker to identify homozygous progenies for this trait.
{"title":"Maternal effect on thermotolerance in lettuce seeds","authors":"Pedro Yuri Cavasin, Luiz Antônio Augusto Gomes, Wilson Vicente Souza Pereira, Heloisa Oliveira dos Santos","doi":"10.1590/s1678-3921.pab2023.v58.03298","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03298","url":null,"abstract":"Abstract The objective of this work was to evaluate the occurrence of the maternal effect on thermotolerance in lettuce (Lactuca sativa) seeds, as well as to find an enzymatic marker for this trait in lettuce seedlings. Seeds from the Everglades thermotolerant cultivar, the Verônica susceptible cultivar, and their reciprocal hybrids were used. For each cultivar and reciprocal hybrid, germination percentage and vigor (germination speed index) tests were carried out at 20 and 32°C. Thermotolerance was defined as the capacity to germinate at 32°C. To obtain markers that could be associated with thermotolerance, enzymatic tests were performed. The bands of the electrophoretic enzymatic extracts were quantified using the ImageJ software. The hybrids behaved similarly to their female genitors. When cultivar Verônica was the female genitor, hybrid seeds did not germinate at high temperatures and showed a lower expression of the esterase enzyme. However, when the female genitor was the Everglades cultivar, hybrids showed a high germination at high temperatures and a greater esterase expression. Therefore, there is a maternal effect on tolerance to thermoinhibition in lettuce seeds, and the esterase enzyme can be used as a selective marker to identify homozygous progenies for this trait.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135700399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03261
Stefanie Lais Kreutz Rosa, Jorge Luiz Moretti de Souza, Aline Aparecida dos Santos
Abstract The objective of this work was to evaluate the data estimated by NASA Power in relation to that measured at surface weather stations under different climates, and to verify the effects of these data on reference evapotranspiration (ETo) estimation. For comparison, data measured at 21 surface weather stations, located in Brazil, Israel, Australia, Portugal, and the United States of America were used, representing different Köppen climate types. The following climatic variables were analyzed daily: maximum (Tmax), mean (Tmean), and minimum (Tmin) air temperatures; wind speed; incident solar radiation; and mean relative humidity (RHmean). Wind speed showed the highest variations and was overestimated in the Cfb, BWh, BSh, and Cfa climates. Tmean and mean wind speed were estimated accurately in the Csa and BWh climates, whereas Tmax and Tmin were underestimated in 13 and 9 climates, respectively; Tmin did not show adequate results in tropical climates. Incident solar radiation was overestimated in all climates, except in BSh, but presented the best statistical indicators among the analyzed variables. The scenarios in which ETo was estimated using the Penman-Monteith method and data from NASA Power were consistent even for the climate type that presented the worst association between measured and estimated data.
{"title":"Data from NASA Power and surface weather stations under different climates on reference evapotranspiration estimation","authors":"Stefanie Lais Kreutz Rosa, Jorge Luiz Moretti de Souza, Aline Aparecida dos Santos","doi":"10.1590/s1678-3921.pab2023.v58.03261","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03261","url":null,"abstract":"Abstract The objective of this work was to evaluate the data estimated by NASA Power in relation to that measured at surface weather stations under different climates, and to verify the effects of these data on reference evapotranspiration (ETo) estimation. For comparison, data measured at 21 surface weather stations, located in Brazil, Israel, Australia, Portugal, and the United States of America were used, representing different Köppen climate types. The following climatic variables were analyzed daily: maximum (Tmax), mean (Tmean), and minimum (Tmin) air temperatures; wind speed; incident solar radiation; and mean relative humidity (RHmean). Wind speed showed the highest variations and was overestimated in the Cfb, BWh, BSh, and Cfa climates. Tmean and mean wind speed were estimated accurately in the Csa and BWh climates, whereas Tmax and Tmin were underestimated in 13 and 9 climates, respectively; Tmin did not show adequate results in tropical climates. Incident solar radiation was overestimated in all climates, except in BSh, but presented the best statistical indicators among the analyzed variables. The scenarios in which ETo was estimated using the Penman-Monteith method and data from NASA Power were consistent even for the climate type that presented the worst association between measured and estimated data.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135701833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03196
Lucas De Ross Marchioretto, Andrea De Rossi, Gilmar Arduino Bettio Marodin
Abstract The objective of this work was to evaluate chemical thinning programs containing mixtures of different plant growth regulators, at low concentrations, applied to 'Fuji Mishima' apple trees at post-blossom, as well as to identify the most effective in reducing fruit set, decreasing the need of manual thinning, and improving fruit quality. Under a black anti-hail net, the apple trees were sprayed with the six following chemical thinning protocols (treatments): benzyladenine (BA) + gibberellin4+7 (GA) at full bloom (FB) and BA + carbaryl (CB) on fruitlets with a 15 mm diameter; BA + GA at FB and naphthaleneacetic acid (NAA) + CB on fruitlets with a 7 mm diameter; BA + GA at FB and BA + CB on fruitlets with a 15 mm diameter; ethephon (ETH) + CB on fruitlets with a 15 mm diameter and metamitron (MM) + ETH on fruitlets with a 20 mm diameter; and MM on fruitlets with a 7 mm diameter and MM on fruitlets with a 20 mm diameter. The treatments were compared with an untreated and a manual thinning control. The black net reduced photosynthetically active radiation in 22%. For 'Fuji Mishima' apples under a black anti-hail net, the chemical thinning program consisting of BA + GA (47 + 47 g a.i. ha-1) at FB, followed by BA + CB (80 + 288 g a.i. ha-1) on fruitlets with a 15 mm diameter, consistently reduces fruit set, requires less manual thinning, and improves fruit weight and size.
{"title":"Chemical thinning programs for 'Fuji Mishima' apple trees under black anti-hail net","authors":"Lucas De Ross Marchioretto, Andrea De Rossi, Gilmar Arduino Bettio Marodin","doi":"10.1590/s1678-3921.pab2023.v58.03196","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03196","url":null,"abstract":"Abstract The objective of this work was to evaluate chemical thinning programs containing mixtures of different plant growth regulators, at low concentrations, applied to 'Fuji Mishima' apple trees at post-blossom, as well as to identify the most effective in reducing fruit set, decreasing the need of manual thinning, and improving fruit quality. Under a black anti-hail net, the apple trees were sprayed with the six following chemical thinning protocols (treatments): benzyladenine (BA) + gibberellin4+7 (GA) at full bloom (FB) and BA + carbaryl (CB) on fruitlets with a 15 mm diameter; BA + GA at FB and naphthaleneacetic acid (NAA) + CB on fruitlets with a 7 mm diameter; BA + GA at FB and BA + CB on fruitlets with a 15 mm diameter; ethephon (ETH) + CB on fruitlets with a 15 mm diameter and metamitron (MM) + ETH on fruitlets with a 20 mm diameter; and MM on fruitlets with a 7 mm diameter and MM on fruitlets with a 20 mm diameter. The treatments were compared with an untreated and a manual thinning control. The black net reduced photosynthetically active radiation in 22%. For 'Fuji Mishima' apples under a black anti-hail net, the chemical thinning program consisting of BA + GA (47 + 47 g a.i. ha-1) at FB, followed by BA + CB (80 + 288 g a.i. ha-1) on fruitlets with a 15 mm diameter, consistently reduces fruit set, requires less manual thinning, and improves fruit weight and size.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136305318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03173
Maria Jany Kátia Loiola Andrade, Alexandre Santos de Oliveira, Walber Felix dos Santos, Luan dos Santos Silva, Jenilton Gomes da Cunha, Antônio Gustavo de Luna Souto, Ítalo Herbert Lucena Cavalcante
Abstract The objective of this work was to evaluate the initial adaptive performance of Israeli mango tree cultivars grown in the submedian region of the São Francisco Valley, Brazil. The experiment was carried out from January 2019 to July 2020 using seedlings of the Omer and Shelly cultivars, at six months after transplanting, at a 3×6 m spacing. The experimental design was randomized complete blocks in a 2×3 factorial arrangement, corresponding to the two Israeli mango tree cultivars and the number of branches after formative pruning (three, four, and five branches), with four replicates. Biometric, biochemical, and photosynthetic variables were analyzed, differing between the evaluation times after pruning. The Omer cultivar is more vigorous than Shelly, and formative pruning with three, four, and five branches is recommended for both mango cultivars under the cultivation conditions of the São Francisco Valley.
{"title":"Development of Israeli mango cultivars in the Brazilian semiarid region","authors":"Maria Jany Kátia Loiola Andrade, Alexandre Santos de Oliveira, Walber Felix dos Santos, Luan dos Santos Silva, Jenilton Gomes da Cunha, Antônio Gustavo de Luna Souto, Ítalo Herbert Lucena Cavalcante","doi":"10.1590/s1678-3921.pab2023.v58.03173","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03173","url":null,"abstract":"Abstract The objective of this work was to evaluate the initial adaptive performance of Israeli mango tree cultivars grown in the submedian region of the São Francisco Valley, Brazil. The experiment was carried out from January 2019 to July 2020 using seedlings of the Omer and Shelly cultivars, at six months after transplanting, at a 3×6 m spacing. The experimental design was randomized complete blocks in a 2×3 factorial arrangement, corresponding to the two Israeli mango tree cultivars and the number of branches after formative pruning (three, four, and five branches), with four replicates. Biometric, biochemical, and photosynthetic variables were analyzed, differing between the evaluation times after pruning. The Omer cultivar is more vigorous than Shelly, and formative pruning with three, four, and five branches is recommended for both mango cultivars under the cultivation conditions of the São Francisco Valley.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136305332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03225
Guilherme Nicolao, Newton Alex Mayer, Bernardo Ueno, Valmor João Bianchi
Abstract The objective of this work was to evaluate the effect of the use of rootstocks from clonal and seed production systems on the morphology of nursery peach trees of cultivar Granada. The experiment was carried out in a completely randomized design with five treatments ('Granada' scion grafted onto five rootstocks) and five replicates. The rootstocks from clonal production were the 'Okinawa' peach plant and the GKM-ELD-10-70, EF-SAU-10-78, and EF-SAU-10-87 peach genotypes kept in pots. The rootstocks from the seed production system came from peach seed of some scion varieties (mixed pits) used for canning production and propagated in a nursery field system. Shoot and root morphological variables were evaluated. The rootstock production system did not affect root volume. However, the nursery trees of the clonal rootstocks system kept in pots showed a higher percentage of water in the roots. The clonal rootstocks in the potted system do not affect most of the morphological traits of 'Granada' peach nursery trees; however, they induce a homogeneous root system and delay leaf abscission, besides not requiring root pruning.
摘要本研究旨在评价克隆生产体系和种子生产体系的砧木使用对格拉纳达桃树苗木形态的影响。试验采用完全随机设计，5个处理(‘格拉纳达’接穗接在5根砧木上)，5个重复。无性系生产的砧木为“冲绳”桃植株和盆栽保存的gkm - ld -10-70、ef - su -10-78和ef - su -10-87桃基因型。制种系统的砧木来自于一些用于罐头生产的接穗品种(混合坑)的桃种子，并在苗圃系统中繁殖。对茎和根的形态变量进行了评价。砧木生产系统对根体积没有影响。而盆栽无性系砧木体系的苗木根系水分含量较高。盆栽体系中的无性系砧木对格拉纳达桃树苗木的大部分形态性状没有影响;然而，除了不需要根修剪外，它们还能诱导均匀的根系并延缓叶片脱落。
{"title":"Morphological traits of 'Granada' peach nursery trees from rootstocks of two production systems","authors":"Guilherme Nicolao, Newton Alex Mayer, Bernardo Ueno, Valmor João Bianchi","doi":"10.1590/s1678-3921.pab2023.v58.03225","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03225","url":null,"abstract":"Abstract The objective of this work was to evaluate the effect of the use of rootstocks from clonal and seed production systems on the morphology of nursery peach trees of cultivar Granada. The experiment was carried out in a completely randomized design with five treatments ('Granada' scion grafted onto five rootstocks) and five replicates. The rootstocks from clonal production were the 'Okinawa' peach plant and the GKM-ELD-10-70, EF-SAU-10-78, and EF-SAU-10-87 peach genotypes kept in pots. The rootstocks from the seed production system came from peach seed of some scion varieties (mixed pits) used for canning production and propagated in a nursery field system. Shoot and root morphological variables were evaluated. The rootstock production system did not affect root volume. However, the nursery trees of the clonal rootstocks system kept in pots showed a higher percentage of water in the roots. The clonal rootstocks in the potted system do not affect most of the morphological traits of 'Granada' peach nursery trees; however, they induce a homogeneous root system and delay leaf abscission, besides not requiring root pruning.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135700044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03119
Tuany Yuri Kuboyama Nogueira, Victoria Diniz Shimizu-Marin, Ana Carolina Gonçales, Heloíza Ferreira Alves do Prado, Roberto da Silva, Ellen Silva Lago-Vanzela
Abstract The objective of this work was to manufacture pizza dough, truffle, and cake using the paste of a by-product from the vinification of 'BRS Violeta' grape, as well as to determine some bromatological characteristics of these products. The by-product was pressed to remove excess must and crushed to obtain the paste. The paste, pasteurized at 80°C for 3 min and frozen at -18°C, was characterized for total phenolic compounds (TPC), total monomeric anthocyanins (TMA), and dietary fiber. The food products were characterized for the following parameters: moisture, energy value, and protein, lipid, ash, dietary fiber, total carbohydrates, and TPC contents. The contents found in the paste were: 326 mg GAE 100 g-1, for TPC; 185 mg mv35diglc 100g-1, for TMA; and 10 g 100 g-1, for dietary fibers. Based on the centesimal compositions of the food products, the pizza dough and truffle can be considered as a source of fiber and protein, respectively. The products show TPC contents between 51 and 63 mg GAE 100 g-1. It is possible to prepare food products of good nutritional quality, using grape by-product paste, to minimize waste in the field.
{"title":"Food product preparation from the vinification of 'BRS Violeta' by-products","authors":"Tuany Yuri Kuboyama Nogueira, Victoria Diniz Shimizu-Marin, Ana Carolina Gonçales, Heloíza Ferreira Alves do Prado, Roberto da Silva, Ellen Silva Lago-Vanzela","doi":"10.1590/s1678-3921.pab2023.v58.03119","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03119","url":null,"abstract":"Abstract The objective of this work was to manufacture pizza dough, truffle, and cake using the paste of a by-product from the vinification of 'BRS Violeta' grape, as well as to determine some bromatological characteristics of these products. The by-product was pressed to remove excess must and crushed to obtain the paste. The paste, pasteurized at 80°C for 3 min and frozen at -18°C, was characterized for total phenolic compounds (TPC), total monomeric anthocyanins (TMA), and dietary fiber. The food products were characterized for the following parameters: moisture, energy value, and protein, lipid, ash, dietary fiber, total carbohydrates, and TPC contents. The contents found in the paste were: 326 mg GAE 100 g-1, for TPC; 185 mg mv35diglc 100g-1, for TMA; and 10 g 100 g-1, for dietary fibers. Based on the centesimal compositions of the food products, the pizza dough and truffle can be considered as a source of fiber and protein, respectively. The products show TPC contents between 51 and 63 mg GAE 100 g-1. It is possible to prepare food products of good nutritional quality, using grape by-product paste, to minimize waste in the field.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135102042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1590/s1678-3921.pab2023.v58.03271
Alberto Cargnelutti Filho, Jéssica Maronez de Souza, Ismael Mario Márcio Neu, Daniela Lixinski Silveira, Valéria Escaio Bubans, Samanta Luiza da Costa, Lucas Fillipin Osmari, Bruno Fillipin Osmari
Abstract The objective of this work was to determine the sample size necessary for estimating the means of wheat (Triticum aestivum) traits, obtained through measurement, counting, and weighing. Seventeen uniformity trials were performed with 1,790 plants harvested randomly, whose following traits were evaluated: lengths of the main stem and main stem ear (measurement); number of leaves, stems, and ears (counting); and mass of fresh and dry matter of leaves, stems, and ears (weighing). The Bartlett and Kolmogorov-Smirnov tests and Welch’s analysis of variance were performed. Skewness, central tendency, and variability were determined, and sample size was calculated to estimate the means of the 13 evaluated traits, considering estimation errors (semi-amplitudes of the 95% confidence interval) equal to 5, 10, 15, and 20% of the mean. There is a decrease in the sample size to estimate the means of wheat traits obtained through weighing, counting, and measuring, in this order. In an experiment to estimate the mean of wheat traits obtained by weighing, counting, and measuring with a maximum error of 10% of the mean at a 95% confidence interval, 117, 76, and 9 plants per treatment are needed, respectively.
{"title":"Sampling sufficiency for estimating the mean of wheat traits","authors":"Alberto Cargnelutti Filho, Jéssica Maronez de Souza, Ismael Mario Márcio Neu, Daniela Lixinski Silveira, Valéria Escaio Bubans, Samanta Luiza da Costa, Lucas Fillipin Osmari, Bruno Fillipin Osmari","doi":"10.1590/s1678-3921.pab2023.v58.03271","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03271","url":null,"abstract":"Abstract The objective of this work was to determine the sample size necessary for estimating the means of wheat (Triticum aestivum) traits, obtained through measurement, counting, and weighing. Seventeen uniformity trials were performed with 1,790 plants harvested randomly, whose following traits were evaluated: lengths of the main stem and main stem ear (measurement); number of leaves, stems, and ears (counting); and mass of fresh and dry matter of leaves, stems, and ears (weighing). The Bartlett and Kolmogorov-Smirnov tests and Welch’s analysis of variance were performed. Skewness, central tendency, and variability were determined, and sample size was calculated to estimate the means of the 13 evaluated traits, considering estimation errors (semi-amplitudes of the 95% confidence interval) equal to 5, 10, 15, and 20% of the mean. There is a decrease in the sample size to estimate the means of wheat traits obtained through weighing, counting, and measuring, in this order. In an experiment to estimate the mean of wheat traits obtained by weighing, counting, and measuring with a maximum error of 10% of the mean at a 95% confidence interval, 117, 76, and 9 plants per treatment are needed, respectively.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135261026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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