Pesquisa Agropecuaria Tropical最新文献_第7页

Compatibility and phenotypic variability of guava accessions grafted on BRS Guaraçá rootstock: vegetative and fruit production traits1 嫁接在BRS guara <e:1>砧木上的番石榴品种的亲和性和表型变异:营养性状和果实生产性状[j]

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5271259

A. Lourenço, C. Santos, D. O. M. D. Silva

{"title":"Compatibility and phenotypic variability of guava accessions grafted on BRS Guaraçá rootstock: vegetative and fruit production traits1","authors":"A. Lourenço, C. Santos, D. O. M. D. Silva","doi":"10.1590/1983-40632022v5271259","DOIUrl":"https://doi.org/10.1590/1983-40632022v5271259","url":null,"abstract":"ABSTRACT One of the main problems faced by guava production is the decline caused by the root-knot nematode (Meloidogyne enterolobii), which has a wide distribution in Brazil. This study aimed to evaluate the productive and morphological compatibility and variability of guava accessions grafted on BRS Guaraçá, a rootstock with resistance to the root-knot nematode. The experiment was conducted with 83 accessions from the Psidium Germplasm Bank (Petrolina, Pernambuco State, Brazil). The evaluated traits were stem diameter, canopy diameter I and II, plant height, total number of fruits, total fruit weight, mean fruit weight, seed weight, pulp weight, fruit width and length. Except for the stem diameter ratio, all variables showed significant diferences (p < 0.05), indicating phenotypic variability. The evaluated accessions showed no incompatibility symptoms, e.g., cracks, exudations and diferences for stem diameter in the grafted area, indicating high compatibility. The accessions formed vigorous plants in the second harvest cycle, with mean canopy diameter of 2.3 m and mean plant height of 2.2 m, also indicating high compatibility. The accessions Gua64BA, Gua181ES, Gua06MA, Pedro Sato and Gua99AM showed the highest values for pulp and fruit weight (around 160 g), whereas Gua96AM, Gua70RO, Gua192ES, Gua01MA and Gua183ES showed the highest fruit production values (around 20 kg plant−1), being recommended for grafting in BRS Guaraçá or as potential parents for population development.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"93 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67250567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water-use efficiency and onion quality in future climate scenarios 未来气候情景下的水利用效率和洋葱质量

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5272212

W. L. Simões, F. Angelotti, Miguel Julio Machado Guimarães, Jucicléia Soares da Silva, R. M. E. Silva, J. M. R. Barros

引用次数: 0

Quantity-intensity ratio of potassium in gypsiferous soils in Iraq 伊拉克石膏质土壤中钾的量强比

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5271620

Mijbil Mohammad Al-Jumaily, H. Al-Hamandi, M. Al-Obaidi, Radhwan Rafid Al-Zidan

引用次数: 2

Optimal soybean sowing window adjusted to climatic variability based on El Nino-Southern Oscillation using agrometeorological modeling 基于厄尔尼诺-南方涛动农业气象模型的气候变率调整下大豆最优播期

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5272428

M. Lima, H. Nunes, L. Sampaio, P. Souza, C. Fraisse

{"title":"Optimal soybean sowing window adjusted to climatic variability based on El Nino-Southern Oscillation using agrometeorological modeling","authors":"M. Lima, H. Nunes, L. Sampaio, P. Souza, C. Fraisse","doi":"10.1590/1983-40632022v5272428","DOIUrl":"https://doi.org/10.1590/1983-40632022v5272428","url":null,"abstract":"ABSTRACT Determining the optimal sowing window (OSW) based on climate variability associated with El Nino-Southern Oscillation (ENSO) can provide valuable information for agricultural planning in the tropics. This study aimed to calibrate, evaluate and apply the CROPGRO-Soybean model for determining the OSW across the ENSO phases for soybean-producing areas in the Pará State, northern Brazil. First, the model was calibrated and evaluated using experimental data collected in the field, between 2006 and 2009. In this process, the model estimates showed a good agreement with the observed data for soybean phenology, growth and yield, demonstrating potential to simulate the crop yield in this part of the Amazon. After calibration, the model was used in the seasonal mode to simulate 18 planting dates, over 39 years and in three locations. The simulated yields were divided into three ENSO phases. The set of sowing dates that showed a high frequency (> 80 %) of yields above 3,500 kg ha−1 integrated the OSW for each location and ENSO phases. The OSW duration differed between locations and ENSO phases, varying more during La Nina than El Nino events. However, regardless of the location or ENSO phase, late sowing was more suitable, because, besides favoring a greater frequency of good climate conditions for the development, growth and high yields, it also favors a lower risk of rainfall during the harvest period.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of irrigation, cladode size, harvest time and addition of citric acid on the properties of cactus mucilage 灌溉、枝大小、采收时间和柠檬酸添加对仙人掌粘液性质的影响

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5272559

Franquielle Ribeiro de Oliveira, K. S. Fonseca, A. M. D. R. F. Jardim, Jheizon Feitoza do Nascimento Souza, E. K. D. Viégas, Anderson Rodrigo da Silva, A. N. Simões

{"title":"Influence of irrigation, cladode size, harvest time and addition of citric acid on the properties of cactus mucilage","authors":"Franquielle Ribeiro de Oliveira, K. S. Fonseca, A. M. D. R. F. Jardim, Jheizon Feitoza do Nascimento Souza, E. K. D. Viégas, Anderson Rodrigo da Silva, A. N. Simões","doi":"10.1590/1983-40632022v5272559","DOIUrl":"https://doi.org/10.1590/1983-40632022v5272559","url":null,"abstract":"ABSTRACT Cactus is a highly resistant crop, and offers benefits in its mucilage for the industry due to its physicochemical properties. This study aimed to analyze the effect of irrigation managements, harvest time, cladode size and citric acid addition during the processing on the agro-industrial yield and physicochemical properties of mucilage extracted from cladodes of Nopalea cochenillifera Miúda clone cultivated under rainfied and irrigated conditions. The yield, soluble solids content, titratable acidity, pH, K+ and Na+ contents, and the electrical conductivity were measured in the mucilage. The management practices in the field resulted in changes in the studied phytochemicals. For the rainfied cultivation, the night harvest of the biggest cladodes increased the K+ and soluble solids contents. The addition of citric acid to the mucilage extraction resulted in higher amounts of soluble solids, titratable acidity and electrical conductivity and lower pH values. The highest water availability promoted higher mucilage yields.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selection of Bacillus thuringiensis strains toxic to Meloidogyne incognita 苏云金芽孢杆菌毒株的筛选

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5273070

Jônatas Barros dos Santos, A. Silva, P. Queiroz, B. Eckstein, R. Monnerat

引用次数: 1

Biological control of phytoparasitic nematodes in sugarcane fields 甘蔗田植物寄生线虫的生物防治

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5273758

L. L. Dinardo-Miranda, Isabella Dinardo Miranda, Higor Domingos Silvério da Silva, J. Fracasso

{"title":"Biological control of phytoparasitic nematodes in sugarcane fields","authors":"L. L. Dinardo-Miranda, Isabella Dinardo Miranda, Higor Domingos Silvério da Silva, J. Fracasso","doi":"10.1590/1983-40632022v5273758","DOIUrl":"https://doi.org/10.1590/1983-40632022v5273758","url":null,"abstract":"ABSTRACT The management of nematode infested areas includes several measures, among which chemical nematicides are the most used. However, since their use is associated with environmental impacts, researches with biocontrol agents have acquired a greater importance. This study aimed to evaluate the performance of Bacillus subtilis + B. licheniformis, when applied to the planting furrow, on nematode control and its effects on sugarcane yield. Five experiments were carried out in infested areas, with four treatments: control - no nematicide; carbosulfan 700EC 4 L ha-1 - standard treatment; B. subtilis + B. licheniformis at 0.16 kg ha-1 and 0.20 kg ha-1. Carbosulfan was more efficient in controlling the nematodes, reducing the populations at least four months after planting. The treatments with B. subtilis + B. licheniformis were more effective in the control of Meloidogyne javanica, when compared to Pratylenchus. The plots treated with carbosulfan produced 11 % more than the control. There was no difference between the B. subtilis + B. licheniformis doses, in relation to yield. The plots treated with the biological product produced 5 % more than the control.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characterization of indole-3-acetic acid content in inoculant fractions and its effect on plant growth 接种剂中吲哚-3-乙酸含量的表征及其对植物生长的影响

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5273044

Pedro Henrique Pedron Mattiuzzi, E. G. Vendruscolo, M. F. Santos

{"title":"Characterization of indole-3-acetic acid content in inoculant fractions and its effect on plant growth","authors":"Pedro Henrique Pedron Mattiuzzi, E. G. Vendruscolo, M. F. Santos","doi":"10.1590/1983-40632022v5273044","DOIUrl":"https://doi.org/10.1590/1983-40632022v5273044","url":null,"abstract":"ABSTRACT Indole-3-acetic acid (IAA) is a phytohormone produced by many rhizobacterial species to mediate plant colonization while promoting plant growth. The colorimetric assay is widely used to analyze the bacterial IAA biosynthesis because it is a straightforward, cost-effective and fast technique. However, the characterization of parts or fractions of inoculant formulations is rarely performed. This study aimed to determine the fraction of the inoculant that is effective in promoting the plant growth, whether the bacteria or media growth can induce the phytohormones to expand the radicular zone of the plant, and whether the seed bacterization or foliar application can alter the plant growth. The inoculum samples (homemade and commercial) were obtained in a Luria-Bertani growth medium with and without tryptophan-L and the inoculants were divided into two fractions: pellet and supernatant. For the IAA quantification, the pellet fraction was subjected to physical (sonication) and chemical (lysozyme) treatments alone and combined. The IAA levels were evaluated using the colorimetric assay, and the effect on plant growth was determined by the inoculation of maize seedlings. The homemade and commercial formulations showed distinct patterns, in terms of IAA synthesis. The supernatant fraction provided higher amounts of IAA and was effective in improving the root area. Lysozyme was superior to sonication in mediating the release of IAA from bacterial cells. No significant differences were observed between seed or foliar inoculation.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Differences in biochemical, physiological and molecular response mechanisms of rice, weedy rice and barnyardgrass subjected to drought 水稻、杂草稻和稗子草对干旱的生化、生理和分子响应机制差异

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5270487

D. Agostinetto, C. Oliveira, A. Langaro, J. Silva, G. F. Barbieri

{"title":"Differences in biochemical, physiological and molecular response mechanisms of rice, weedy rice and barnyardgrass subjected to drought","authors":"D. Agostinetto, C. Oliveira, A. Langaro, J. Silva, G. F. Barbieri","doi":"10.1590/1983-40632022v5270487","DOIUrl":"https://doi.org/10.1590/1983-40632022v5270487","url":null,"abstract":"ABSTRACT The drought stress tolerance may differ among species and cultivars. The drought effect on plants depends on the impact on the plant’s physiological, biochemical and molecular processes, as well as on its ability to adapt under these conditions. This study aimed to evaluate the physiological and biochemical responses, and determine the expression of the genes OsAPX2, OsHSP24.15, OsHSP71.10 and OsHSP85.88 under drought conditions in rice, weedy rice and barnyardgrass. A greenhouse experiment was performed in a complete randomized design, with four replications and two factors: water conditions (well-watered and water deficit) and plant species [rice (Oryza sativa cv. Puitá), weedy rice (Oryza spp.) and barnyardgrass (Echinochloa spp.)]. Under drought conditions, the rice and weedy rice plants showed more cellular damage than the barnyardgrass, and the three species showed a reduced photosynthetic rate. C3 plants (rice and weedy rice) increased the damage to lipids and proteins at 5 days of drought. However, for C4 plants (barnyardgrass), the drought conditions did not affect the biochemical parameters. The expression of the OsHSP85.88 gene increased in the three plants exposed to water deficit.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67250758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of the natural distribution, habitat and conservation of Stryphnodendron pulcherrimum (Willd.) Hochr. in response to global climate change 野生毛茛的自然分布、生境及保护预测Hochr。应对全球气候变化

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Pesquisa Agropecuaria Tropical Pub Date : 2022-01-01 DOI: 10.1590/1983-40632022v5272422

Jennifer Souza Tomaz, Caroline de Souza Bezerra, A. Aguiar, Marcos Silveira Wrege, M. T. G. Lopes

{"title":"Prediction of the natural distribution, habitat and conservation of Stryphnodendron pulcherrimum (Willd.) Hochr. in response to global climate change","authors":"Jennifer Souza Tomaz, Caroline de Souza Bezerra, A. Aguiar, Marcos Silveira Wrege, M. T. G. Lopes","doi":"10.1590/1983-40632022v5272422","DOIUrl":"https://doi.org/10.1590/1983-40632022v5272422","url":null,"abstract":"ABSTRACT Stryphnodendron pulcherrimum is a species used medicinally among traditional Amazonian communities for its bactericidal activity and anti-inflammatory properties. Despite being adapted to rustic environments, there is no information regarding how climate change might affect the species occurrence. The present study aimed to evaluate the natural distribution of S. pulcherrimum in the current period and how its potential geographic distribution may be affected in response to future climate change scenarios in Brazilian phytogeographic domains. A total of 19 bioclimatic variables were used from the WorldClim database. Four algorithm models (Climate Space Model, Envelope Score, Niche Mosaic and Environmental Distance - present) and one software (Open Modeller - future) were used to verify the potential occurrence of S. pulcherrimum in five Brazilian domains (Amazon, Cerrado, Caatinga, Atlantic Forest and Pantanal) and three intervals (2009-2019 - present; 2020-2050 and 2051-2070 - future). There were losses of areas favorable to the occurrence of S. pulcherrimum in the Amazon, Cerrado and Pantanal, and global climate change may affect its natural distribution especially in the Atlantic Forest and Amazon. In the Amazon, the species may be totally extinct, in the worst scenario, by 2070.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4