Revista Engenharia na Agricultura - REVENG最新文献

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Nitric Oxide as an Attenuator of Copper Toxicity in the concentration of Nutrients in maize Seedlings 一氧化氮作为玉米幼苗营养素浓度中铜毒性的减弱剂

Revista Engenharia na Agricultura - REVENG Pub Date : 2024-07-11 DOI: 10.13083/reveng.v32i1.16812

A. E. A. Brito, Priscilla Andrade Silva, Job Teixeira Oliveira, Cassino Garcia Roque, Túlio Russino Castro, C. F. O. Oliveira Neto

{"title":"Nitric Oxide as an Attenuator of Copper Toxicity in the concentration of Nutrients in maize Seedlings","authors":"A. E. A. Brito, Priscilla Andrade Silva, Job Teixeira Oliveira, Cassino Garcia Roque, Túlio Russino Castro, C. F. O. Oliveira Neto","doi":"10.13083/reveng.v32i1.16812","DOIUrl":"https://doi.org/10.13083/reveng.v32i1.16812","url":null,"abstract":"The maize crop is highlighted in the worldwide and Brazilian agribusiness, presenting itself as a raw material for both human and animal nutrition. Nitric oxide (NO) stands out as a signalling molecule playing a crucial role in plant responses to abiotic stresses as caused by heavy metals. Therefore, the objective of this work was to evaluate the effect of nitric oxide on the levels of macro and micronutrients, such as cationic magnesium, calcium, iron, copper, zinc and manganese. The copper bioaccumulation and translocation factor, in the initial growth of maize seedlings were subjected to copper toxicity. The seeds were soaked for 48 hours in Germitest paper using a solution containing sodium nitroprusside Na2[Fe(CN)5NO]2H2O as a donor of nitric oxide, sodium ferrocyanide Na4Fe (CN)6 as compensator and deionized water (control). The experiment was carried out in a 4 x 3 completely randomized factorial design with 12 treatments and 8 repetitions, totaling 96 trays containing 25 seeds per repetition. The results showed that the doses of nitric oxide were not sufficient to attenuate the copper toxicity, highlighting the metal accumulation in the roots. The doses of sodium nitroprusside and sodium ferrocyanide provided toxicity, changing the mineral balance in the mobilization of macro and cationic micronutrients and their translocation to the aerial part of K9606VIP3 maize seedlings in the initial growth.","PeriodicalId":512055,"journal":{"name":"Revista Engenharia na Agricultura - REVENG","volume":"98 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657415","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

Emergence and initial growth of cowpea varieties at different temperatures 不同温度下豇豆品种的萌发和初始生长

Revista Engenharia na Agricultura - REVENG Pub Date : 2024-03-01 DOI: 10.13083/reveng.v32i1.15549

M. N. Amorim, José Aliçanro Bezerra da Silva, Diego Ariel Meloni, Edson Pereira da Silva, Késsia Caroline Dantas da Silva, Marcelo da Silva Martins

{"title":"Emergence and initial growth of cowpea varieties at different temperatures","authors":"M. N. Amorim, José Aliçanro Bezerra da Silva, Diego Ariel Meloni, Edson Pereira da Silva, Késsia Caroline Dantas da Silva, Marcelo da Silva Martins","doi":"10.13083/reveng.v32i1.15549","DOIUrl":"https://doi.org/10.13083/reveng.v32i1.15549","url":null,"abstract":"Brazil is the largest producer and consumer of beans in the world; however, the prospect of climate change could affect this production. Among these changes, the incidence of rising temperatures can directly affect the crop cycle, influencing biochemical processes that occur during seed germination and seedling emergence. The objective of this work was to determine the optimum temperature level for the emergence and initial growth of three varieties of cowpea. The experiment was conducted in a laboratory linked to the Federal University of the São Francisco Valley, Juazeiro Campus, state of Bahia, with a completely randomized design (DIC), in a 6x3 factorial scheme, with six treatments at different temperature levels: 20, 25, 30, 35, 40 and 45 °C; and three varieties of cowpea: BRS Pajeú, BRS Nova Era and BRS Pujante. The following variables were assessed: speed index, average time, relative frequency and percentage of emergence; stem length and diameter; accumulation of fresh and dry biomass in the stem, leaf and root. The ideal temperature range found for the emergence and initial growth of the cowpea varieties BRS Pajeú ranged from 27 to 32 ºC, for BRS Nova Era between 30 and 41 ºC and for BRS Pujante between 29 and 35 ºC. As the BRS Nova Era variety performs better in high temperature conditions, it could be an alternative for growing beans in the face of climate change.","PeriodicalId":512055,"journal":{"name":"Revista Engenharia na Agricultura - REVENG","volume":"110 31","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140089609","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