Revista Brasileira De Fruticultura最新文献

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Root pruning of pecan rootstocks in different containers 不同容器中山核桃砧木的根修剪
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022912
Guilherme Ferreira da Silva, C. Martins, Caroline Farias Barreto, C. Hellwig, P. Mello-Farias
{"title":"Root pruning of pecan rootstocks in different containers","authors":"Guilherme Ferreira da Silva, C. Martins, Caroline Farias Barreto, C. Hellwig, P. Mello-Farias","doi":"10.1590/0100-29452022912","DOIUrl":"https://doi.org/10.1590/0100-29452022912","url":null,"abstract":"Abstract Quality pecan rootstocks that ensure genetic and phytosanitary safety, besides having good vegetative development, are extremely important to implant a successful orchard. Rootstocks with vigorous radicular systems affect plant growth. This study aimed at evaluating rootstock growth as the result of root pruning and the use of different containers to grow pecan rootstocks in an organic system. The experiment was conducted with “Barton” rootstocks in the experimental area at the Embrapa Clima Temperado in Pelotas, RS, Brazil, in 2018, 2019 and 2020. Rootstocks were evaluated in plastic bags and tubes and in the soil, associated with root pruning. Evaluation 280 and 480 days after transplant comprised the following: height of the aerial part, length of primary and secondary radicular systems, stem diameter, leaf area, dry mass of the aerial part, dry mass of the radicular system, dry mass of secondary roots and the Dickson Quality Index. The use of plastic bags to produce pecan rootstocks was found to coil roots at the bottom of the container. Neither containers nor root pruning affected stem diameter, an important parameter to carry out grafting. Pecan rootstocks with a non-pruned radicular system grown in plastic bags developed large main root and aerial part. Pruning of pecan radicular systems in containers and in the soil leads to increase in the number of main roots but decreases root length.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67380884","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}
引用次数: 0
Nutrient dynamic in cocoa leaves under different nitrogen sources: a reference tool for foliar analysis 不同氮源下可可叶片的营养动态:叶片分析的参考工具
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022035
Melissa Alexandra Romero, Santiago C. Vásquez, A. Romero, Marlene Lorena Molina-Müller, M. Capa-Morocho, F. Granja
{"title":"Nutrient dynamic in cocoa leaves under different nitrogen sources: a reference tool for foliar analysis","authors":"Melissa Alexandra Romero, Santiago C. Vásquez, A. Romero, Marlene Lorena Molina-Müller, M. Capa-Morocho, F. Granja","doi":"10.1590/0100-29452022035","DOIUrl":"https://doi.org/10.1590/0100-29452022035","url":null,"abstract":"Abstract Cocoa is a crop in increasing demand and cultivated worldwide. However, basic information concerning the movement of nutrients in leaves over time is still unknown, and methods to find an optimal time to collect a sample are still ambigu-ous. The present work focused on describing the movement of foliar nutrients (N, P, K, Ca and Mg) in productive 5-year-old cocoa clone CCN51 plants at the same dose of 114.8 kg ha-1 under different sources of nitrogen fertilization (Urea, calcium ni-trate, ammonium sulfate and a control without application). Samples were taken from the time the leaf reached 70% of its total expansion until 10 months of age. The results indicated that the contents of N, Ca and Mg increased as the leaf grew, remained stable between 116 and 158 days of shoot emergence (DSE) and then decreased at the beginning of the leaf senescence period. While the K and P con-tents decrease from the beginning of the trial until 158 DSE where they are stable until the final stage of leaf life. Around 110 to 120 DSE, the leaves of cocoa CCN51 show a more stable nutritional content, a period in which samples can be collected for leaf analysis.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378211","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}
引用次数: 0
Growth ofCampomanesia adamantium (Cambess.) O. Berg, native to Brazilian Cerrado, with green manure in agroecological system contributes to the preservation of the species camomanesia adamantium (Cambess.)生长原产于巴西塞拉多的O. Berg在农业生态系统中使用绿肥有助于该物种的保护
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022084
J. S. Nascimento, M. C. Vieira, N. A. H. Zárate, A. Goelzer, O. B. D. Silva, C. C. Santos
{"title":"Growth ofCampomanesia adamantium (Cambess.) O. Berg, native to Brazilian Cerrado, with green manure in agroecological system contributes to the preservation of the species","authors":"J. S. Nascimento, M. C. Vieira, N. A. H. Zárate, A. Goelzer, O. B. D. Silva, C. C. Santos","doi":"10.1590/0100-29452022084","DOIUrl":"https://doi.org/10.1590/0100-29452022084","url":null,"abstract":"Abstract Campomanesia adamantium (guavira) is a native plant of the Brazilian Cerrado used both as food and as medicine. The plant has undergone indiscriminate overexploitation in its habitat, which, in association with fires and deforestation, puts the species at risk of extinction. To preserve the species, in situ and ex situ management actions are required and agroecological practices associated with green manuring is the recommended system. In this study, we investigated the development of C. adamantium grown with the green manures Stylosanthes macrocephala, Pueraria phaseoloides, Calopogonium mucunoides, and Cajanus cajan, as well as the chemical and microbiological properties of the soil. The green manures had the highest production of fresh and dry masses at the second cut and C. mucunoides, S. macrocephala, and P. phaseoloides presented the highest nutrient concentrations. C. mucunoides mass decomposed rapidly and influenced the chemical properties of the soil, with a greater role of soil microorganisms in the biochemical process of decomposition of the organic residues. The bestdeveloped and highest yielding plants with the highest leaf nutrient content were obtained for C. adamantium grown with the green manures C. mucunoides and S. macrocephala. The results showed that C. adamantium responded positively to the use of the green manure C. mucunoides with increased leaf production. This agroecological cultivation to contributes for the preservation of C. adamantium and the appropriate use of the natural resources of the Cerrado.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378838","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}
引用次数: 0
Evaluation of production and fruit quality of a yellow passion fruit cultivar infected with the cowpea aphid-borne mosaic virus 豇豆蚜传花叶病毒侵染西番莲黄果品种的产量及果实品质评价
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022259
F. R. Gomes, D. P. D. Silva, C. Rodrigues, A. Salazar, Hildeu Ferreira Assunção, S. C. Cruz
{"title":"Evaluation of production and fruit quality of a yellow passion fruit cultivar infected with the cowpea aphid-borne mosaic virus","authors":"F. R. Gomes, D. P. D. Silva, C. Rodrigues, A. Salazar, Hildeu Ferreira Assunção, S. C. Cruz","doi":"10.1590/0100-29452022259","DOIUrl":"https://doi.org/10.1590/0100-29452022259","url":null,"abstract":"Abstract This work aimed to characterize and evaluate the correlations between fruit and pulp characteristics of a commercial cultivar of yellow passion fruit (FB 200) infected with the cowpea aphid-borne mosaic virus (CABMV). The observation of natural infection occurred after the beginning of flowering. The parameters weight, length, and diameter, peel thickness, pulp yield, soluble solids content, titratable acidity, and the soluble solids content/titratable acidity ratio were evaluated. A completely randomized block design composed of 20 plots with five replications was adopted. The data were subject to descriptive analyses and Pearson’s Correlation at 1 and 5% of significance. CABMV has decreased the quality and physical characteristics of fruits, but they still could be destined for juice processing industries. Many parameters of the fruits presented significant positive correlations.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67379335","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}
引用次数: 1
Impact of heat waves on the bud dormancy of grapevines 热浪对葡萄芽休眠的影响
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022286
R. Anzanello, C. Fogaça, G. Sartori, Tainan Graeff Tasso
{"title":"Impact of heat waves on the bud dormancy of grapevines","authors":"R. Anzanello, C. Fogaça, G. Sartori, Tainan Graeff Tasso","doi":"10.1590/0100-29452022286","DOIUrl":"https://doi.org/10.1590/0100-29452022286","url":null,"abstract":"Abstract The objective of this work was to evaluate the effect of heat waves on the bud dormancy of grapevines with contrasting chilling requirements. ‘Chardonnay’, ‘Merlot’ and ‘Cabernet Sauvignon’ hardwood cuttings were collected in vineyards of Veranópolis, State of Rio Grande do Sul, Brazil, and were exposed to constant (7.2°C) or alternate (7.2 and 18°C for 12/12 hours) temperatures, combined with zero, one or two days a week at 25°C. Periodically, part of cuttings was transferred to 25°C for daily budburst evaluation. Endodormancy (dormancy controlled by cold) was overcome with 150 chilling hours (CH) at 7.2ºC in ‘Chardonnay’, 300 CH in ‘Merlot’ and 400 CH in ‘Cabernet Sauvignon’. Daily temperature cycles ranging from7.2ºC to 18°C did not affect the endodormancy process. Heat waves of 25°C resulted in increase in CH to overcome endodormancy. The negative effect of heat waves depended on their duration, with heat partially canceling out the chilling accumulation after 36 continuous hours on the dormancy. Such evidence shows that the dormancy evolution is affected by the impact of the heat interspersed with cold, and should be considered in the adjustment and/or development of better-adapted models for the prediction of the budburst potential of the grapevine culture in Southern Brazil.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67379480","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}
引用次数: 0
Extraction, purification and characterization of invertase from Candida guilliermondii isolated from peach solid wastes 桃源固体废弃物中吉利蒙假丝酵母转化酶的提取、纯化及特性研究
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022849
Tariani Lemos de Avila, Ricardo Peraça Toralles, Estefani Tavares Jansen, Marcela Vega Ferreira, C. Kuhn, W. A. Ruiz
{"title":"Extraction, purification and characterization of invertase from Candida guilliermondii isolated from peach solid wastes","authors":"Tariani Lemos de Avila, Ricardo Peraça Toralles, Estefani Tavares Jansen, Marcela Vega Ferreira, C. Kuhn, W. A. Ruiz","doi":"10.1590/0100-29452022849","DOIUrl":"https://doi.org/10.1590/0100-29452022849","url":null,"abstract":"Abstract The best conditions for in vitro sucrose hydrolysis based on invertase from Candida guilliermondii (ICg) were studied and the kinetic parameters KM,Vmax, and thermal stability of ICg were determined. Candida guilliermondii (Cg) yeast isolated and lyophilized from peach solid wastes was identified using the API 20C AUX method. Subsequently, the Cg was submitted to an autolysis process using NaHCO3 at 200 mM under 200 rpm stirring and 40 °C for 24 h. The enzyme extracts obtained were recovered through precipitation with acetone followed by dialysis and ion-exchange chromatography. The extract purified through precipitation with acetone had activity of 27.7 U.mg-1 and 56% recovery whereas the chromatography process yielded 46.5 U.mg-1 and 44.8%. The optimal sucrose hydrolysis conditions were pH 5.0 and 50 °C, resulting in KM of 30.5 mM and 28.7 mM sucrose, respectively, at 25 °C and 50 °C, both with Michaelian behavior. Thermal inactivation of ICg exhibited first-order apparent kinetics and its residual activity was typically linear between 40 °C and 70 °C. Three isoenzymes were detected through electrophoresis.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67380670","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}
引用次数: 6
Maintenance of ‘Luiza’ apple fruit quality as affected by postharvest practices 采后处理对“路易莎”苹果果实品质的影响
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022905
L. Argenta, R. O. Anese, F. Thewes, R. Wood, C. N. Nesi, D. Neuwald
{"title":"Maintenance of ‘Luiza’ apple fruit quality as affected by postharvest practices","authors":"L. Argenta, R. O. Anese, F. Thewes, R. Wood, C. N. Nesi, D. Neuwald","doi":"10.1590/0100-29452022905","DOIUrl":"https://doi.org/10.1590/0100-29452022905","url":null,"abstract":"Abstract This study was carried out to examine the response of ‘Luiza’ apple to different storage atmospheres, durations, and chemical inhibition of ethylene action by 1-MCP. Analysis of fruit quality and physiological disorder incidence were performed every two months during eight months of storage for Exp. 1 and 2, and after eight months for Exp. 3. Both CA storage and 1-MCP treatment reduced fruit ethylene production and respiration and prevented the rapid fruit softening, flesh browning incidence and fungal decay of ‘Luiza’ apple. The combination of 1-MCP treatment before storage in CA provided an additional benefit in firmness retention after simulated marketing conditions at 22oC. Based on the time to reach a firmness of 53 N, the storage life of ‘Luiza’ apple is less than four months in air-storage and more than six months under CA-storage. ‘Luiza’ fruit did not develop symptoms of CO2 injury when stored under high CO2 partial pressures (up to 4.5 kPa). However, we observed increased flesh browning and fungal decay incidence for CA-stored fruit between six and eight months of storage. Therefore, the storage potential of ‘Luiza’ apple fruit may be limited to six months under CA-storage (1.5 kPa O2 and 2.5 kPa CO2).","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67380829","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}
引用次数: 5
Do stimulate® and acadian® promote increased growth and physiological indices of Hymenaea courbaril seedlings? 刺激®和acadian®是否能促进膜aea courbils幼苗的生长和生理指标的提高?
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022872
O. J. Smiderle, A. D. G. Souza, Sonicley da Silva Maia, Nilmar Diogo dos Reis, J. Costa, Gabriel Souza Pereira
{"title":"Do stimulate® and acadian® promote increased growth and physiological indices of Hymenaea courbaril seedlings?","authors":"O. J. Smiderle, A. D. G. Souza, Sonicley da Silva Maia, Nilmar Diogo dos Reis, J. Costa, Gabriel Souza Pereira","doi":"10.1590/0100-29452022872","DOIUrl":"https://doi.org/10.1590/0100-29452022872","url":null,"abstract":"Abstract Products that have biostimulant action on forest seedlings, such as those based seaweed Acadian® and hormones, have been used due to their beneficial effect on the physiology and growth of plants, in order to improve the quality of forest seedlings. The present study establishes as research problem: Can doses of Acadian® algae extract and Stimulate® be effective for the initial growth and physiological indices of jatobá seedlings? The variables evaluated were: shoot height (H), stem diameter (SD), increments in stem diameter (?SD) and shoot height (?H), shoot dry mass (SDM, g plant-1), root dry mass (RDM, g plant-1) and total dry mass (TDM, g plant-1), and Dickson quality index, net assimilation rate (EA, g.m-2.day), leaf relative growth rate (RA, g.m-2.day), leaf area ratio (FA, m2.g-1), specific leaf area (SA, cm2.g-1), leaf mass ratio (Fw, g/g-1) as well as nitrogen balance index (NBI) and chlorophylls. The plant growth regulators (Acadian®) at the dose of maximum technical efficiency of 0.28 ml L-1 promotes an increase in stem diameter in Hymenaea courbaril. Acadian® increases chlorophyll a and b contents in Hymenaea courbaril seedlings. The tested doses of Stimulate® do not increase chlorophyll a and b contents in H. courbaril seedlings.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67380969","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}
引用次数: 4
Application of biofertilizer directly on ‘Terra Maranhão’ platain bunch for productivity gain 在‘Terra maranh<s:1> o’高原上直接施用生物肥料以提高生产力
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022964
S. S. Berilli, Mateus Francisco Pazinato, Carlos Humberto Desiderio Pirovani, Samuel Paulo Torrezani, L. L. Pereira, A. P. C. G. Berilli
{"title":"Application of biofertilizer directly on ‘Terra Maranhão’ platain bunch for productivity gain","authors":"S. S. Berilli, Mateus Francisco Pazinato, Carlos Humberto Desiderio Pirovani, Samuel Paulo Torrezani, L. L. Pereira, A. P. C. G. Berilli","doi":"10.1590/0100-29452022964","DOIUrl":"https://doi.org/10.1590/0100-29452022964","url":null,"abstract":"Abstract Advances in production systems always aim at finding alternatives to improve crop productivity. One of the recent practices adopted in commercial banana and plantain plantations refers to the application of liquid fertilizers in bunches in order to increase productivity. This research aimed at verifying whether the use of biofertilizers based on pure vinasse or associated with other chemical fertilizers would provide morphophysiological changes in fruits or increase the productivity of ‘Terra Maranhão’ plantain cultivars. In order to carry out this project, a randomized block design with 6 treatments and 3 replicates was set up in a commercial crop and the postharvest production and quality characteristics of ‘Terra Maranhão’ plantain fruits were evaluated. The results showed that the morphophysiological characteristics of freshly harvested fruits that impact productivity such as the fruit weight and bunch weight were affected by treatments, as the postharvest characteristics of ripe fruits were little affected by the application of fertilizers in bunches, except for the SST content. It could be concluded that the crop yield increased significantly by 17% when using mixture of vinasse, potassium chloride and urea; however, this treatment caused significant reduction of 1.3 ºBrix compared to control.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67381245","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}
引用次数: 0
Occurrence of Rust in Myrcianthes pungens (O. BERG) D. Legrand Caused by Austropuccinia psidii in The State of Rio Grande do Sul 南巴西大州桃金娘属植物(O. BERG) D. Legrand)锈病的发生
IF 1 4区 农林科学
Revista Brasileira De Fruticultura Pub Date : 2022-01-01 DOI: 10.1590/0100-29452022073
Rodrigo da Silva Santos, S. Schwarz, Magnólia Aparecida Silva da Silva, E. Bertolini, C. C. L. Andrade, Bruna Alana Haupt Pacini
{"title":"Occurrence of Rust in Myrcianthes pungens (O. BERG) D. Legrand Caused by Austropuccinia psidii in The State of Rio Grande do Sul","authors":"Rodrigo da Silva Santos, S. Schwarz, Magnólia Aparecida Silva da Silva, E. Bertolini, C. C. L. Andrade, Bruna Alana Haupt Pacini","doi":"10.1590/0100-29452022073","DOIUrl":"https://doi.org/10.1590/0100-29452022073","url":null,"abstract":"Abstract Guabiju tree (Myrcianthes pungens) belongs to the Myrtaceae family, with wide occurrence in Rio Grande do Sul (RS), southern Brazil, demonstrates great commercial potential regarding the consumption of its fresh fruit, which has a sweet taste and can be used in drinks, jellies and ice creams, in addition to its nutraceutical properties. As their main characteristic, rusts present the formation of orange pustules containing urediniospores of the pathogen on affected organs. The action of the pathogen causes deformation of stems, leaves, flowers and fruits, thus interfer-ing with the physiological processes of the plant. Thus, the present work aimed at presenting information on the occurrence and confirmation of the causal agent of guabiju rust, in addition to reporting the accessions most susceptible and resistant to Austropuccinia in the guabiju working collection of Eldorado do Sul, RS, Brazil. The diagnosis of the disease was based on symptoms, observation of fungal structures by light microscopy and molecular analyses. From microscopy, ellipsoid to ovoid and slightly equinulate urediniospores were observed, characteristic of Austropuccinia sp. The sequence of the internal transcribed spacer (ITS) region of the isolate showed 99.06% similarity with sequences from the same region of A. psidii deposited on the nucleotide database - GenBank (NCBI). This is the first report of rust associated with guabiju in the state of Rio Grande do Sul, Brazil. From the diagrammatic scale developed, it was possible to identify different levels of susceptibility to A. psidii in guabiju accessions under study.","PeriodicalId":21334,"journal":{"name":"Revista Brasileira De Fruticultura","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67378426","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}
引用次数: 2
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