REVISTA AGRO@MBIENTE ON-LINE最新文献

Soil physical quality: a comprehensive analysis of its importance for agricultural production 土壤物理质量：全面分析其对农业生产的重要性

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2024-07-11 DOI: 10.18227/1982-8470ragro.v18i00.8060

Diego Lima De Souza Cruz, José Frutuoso Do Vale Júnior, Leandro Timoni Camargo Neves, Lais De Brito Carvalho, Oswald Renaud Koblam Ahouangbonou

{"title":"Soil physical quality: a comprehensive analysis of its importance for agricultural production","authors":"Diego Lima De Souza Cruz, José Frutuoso Do Vale Júnior, Leandro Timoni Camargo Neves, Lais De Brito Carvalho, Oswald Renaud Koblam Ahouangbonou","doi":"10.18227/1982-8470ragro.v18i00.8060","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v18i00.8060","url":null,"abstract":"In Brazil, soil physics has acquired great notoriety in recent decades due to losses in agricultural production resulting from soil degradation. Degraded areas are commonly abandoned and generate greenhouse gas emissions, which is why the conservationist soil management have been a priority in government programs. The application of this type of management requires indepth knowledge about the physical properties of the soil and how each of them interacts with other components of the environment. In this context, the objective of this review article was to bring scientific work that correlated the physical quality of the soil with agricultural productivity. Articles indexed in the Web bases of Science, Scopus, Scielo and Redalyc were used. This methodology provided 129 articles, 4 books, 1 book chapter and a doctoral thesis. It can be established that the physical quality of the soil is dynamic and influenced by a set of properties simultaneously, also responding to soil management and climatic conditions. Compaction is the most studied property and has direct effects on the loss of agricultural production, leading many areas to erosion and compromising the soil’s environmental functions. It is considered that maintaining the physical quality of the soil is an essential component within the planning of agricultural activities and can prevent the degradation of areas. Understanding the dynamics of these properties can also help in reversing advanced cases of loss of soil physical quality.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"138 49","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655864","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

Control of wilt disease caused by Fusarium sp. in the cultivation of stocks (Matthiola incana) 在栽培马蹄莲时控制由镰刀菌引起的枯萎病

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2024-06-12 DOI: 10.18227/1982-8470ragro.v18i00.7848

Eliana Granja Guerra, Neptali Nolberto Noboa Andino, Richard Alcides Molina Álvarez, Alex Mauricio Albán Santana, Marlon Brainer Caicedo Villafuerte, Néstor Santiago Luzón Toscano

{"title":"Control of wilt disease caused by Fusarium sp. in the cultivation of stocks (Matthiola incana)","authors":"Eliana Granja Guerra, Neptali Nolberto Noboa Andino, Richard Alcides Molina Álvarez, Alex Mauricio Albán Santana, Marlon Brainer Caicedo Villafuerte, Néstor Santiago Luzón Toscano","doi":"10.18227/1982-8470ragro.v18i00.7848","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v18i00.7848","url":null,"abstract":"In greenhouse cultivation of stock (Matthiola incana), the main causative agent of its death is the fungus Fusarium sp., especially in the early phenological stages, resulting in significant losses during the first four weeks of cultivation. Therefore, the objective of this study was to evaluate phytosanitary control techniques (chemical, biological, and antibiotics) to reduce Fusarium sp. infection in stock (Matthiola incana) cultivation. The experiment was conducted in a randomized block design with five treatments (control; chemical products; biological products, antibiotics, and product combinations) and three replications. The chemical active ingredients used were aluminum phosphite, iprodione, captan, and Hymexazol. Biological solutions included Trichoderma sp. and Bacillus subtilis, while antibiotics used were Weed Pirocontrole, Kasugamicin, Polioxin B, Azoxystrobin, and Kresoxym methyl. Additionally, product combinations were evaluated, such as Fosetyl aluminum, Bacillus subtilis, Polioxin B, Hymexazol, and Azoxystrobin. Control efficacy was measured based on the severity of fungal growth in culture, while mortality represented the loss rate at the end of the experiment. The combined treatment of techniques was superior, with a mortality rate of 13.77%, compared to the 63.00% recorded in the absolute control group. These results underscore the importance of an integrated approach to Fusarium sp. control in stock cultivation, emphasizing the effectiveness of combining different phytosanitary techniques to minimize losses and promote successful production.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"35 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141354096","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

Perception of the use and exposure to pesticides among farmers in Santana do Livramento, Rio Grande do Sul state - Brazil 巴西南里奥格兰德州 Santana do Livramento 农民对杀虫剂使用和接触情况的看法

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2024-04-22 DOI: 10.18227/1982-8470ragro.v18i00.7962

Simone Braga Terra, Bibiana Costa Machado

{"title":"Perception of the use and exposure to pesticides among farmers in Santana do Livramento, Rio Grande do Sul state - Brazil","authors":"Simone Braga Terra, Bibiana Costa Machado","doi":"10.18227/1982-8470ragro.v18i00.7962","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v18i00.7962","url":null,"abstract":"The majority of farmers in Brazil have a low level of education, which makes it difficult for them to read and understand pesticide labels and can result in poisoning during field applications. The aim of this study was to verify the perception of farmers and rural workers in the district of Santana do Livramento, Rio Grande do Sul - Brazil, concerning the use of and exposure to pesticides, as well as the damage caused to their health and the environment. Thirty-one farmers who make use of pesticides on their property were interviewed, together with the people that apply the pesticides. The profile of those interviewed showed that the majority were male (87.5%), with a professional occupation characterised as rural worker (29.2%) and a high school education (29.15%). When reading the labels and pictograms, none of the respondents correctly defined the figures on the labels or knew their meaning, the conclusion being that comprehension is still a problem. The perception of the farmers concerning the use of and exposure to pesticides was considered low despite claiming to know the risks that exposure entails. However, their partial use of PPE and their difficulty in understanding the product labels would contradict this claim. In addition, a proportion of those interviewed had already experienced some symptoms of poisoning. ","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140677527","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

General evaluation of the distribution and commercialization cycle of bananas at the main fairs in Boa Vista - RR 博阿维斯塔主要交易会上香蕉销售和商业化周期的总体评估 - RR

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2024-04-16 DOI: 10.18227/1982-8470ragro.v18i00.8135

Enzo Viana Maraschin, Leandro Timoni Buchdid Camargo Neves, Tony Tonny Nascimento Gomes, Wismith Silva de Andrade, Sara Caroline Prill Gomes, Ozimar De Lima Coutinho, Hestarlem Pietro de Andrade Guimarães

{"title":"General evaluation of the distribution and commercialization cycle of bananas at the main fairs in Boa Vista - RR","authors":"Enzo Viana Maraschin, Leandro Timoni Buchdid Camargo Neves, Tony Tonny Nascimento Gomes, Wismith Silva de Andrade, Sara Caroline Prill Gomes, Ozimar De Lima Coutinho, Hestarlem Pietro de Andrade Guimarães","doi":"10.18227/1982-8470ragro.v18i00.8135","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v18i00.8135","url":null,"abstract":"In Roraima, banana cultivation is a significant socio-economic activity aimed at catering to both the domestic and regional markets. The banana-producing region (Musa spp) is concentrated in the southern part of the state, encompassing the municipalities of Caroebe, São João da Baliza, and Rorainópolis. Thus, the objective was to assess fruit damage and investigate severity and causes. The cultivars selected for the study were ‘Pacovan’, ‘Prata’, and ‘Missouri’. Five markets were visited for the study, with eleven points of sale sampled at each market. At each sampling point, newly arrived batche (bunches) was collected at three distinct times. The variable studied was the incidence of fruit damage at different ripening stages (type 2 and type 7). Data collected visually were subjected to Likert analysis and descriptive statistics. The results showed that mature bananas exposed directly on tarpaulin exhibited severe mechanical damage, such as abrasions and cuts due to direct contact with the rough surface of the tarpaulin and stacking during transport. Mature fruits transported in cardboard boxes had a lower incidence of damage and also served as a display for marketing. Mature green fruits were also affected during transport, with greater impact when in plastic bags or plastic boxes due to irregular and pointed surfaces. In the case of green-mature fruit, the damage incurred was less severe compared to mature fruit.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"25 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140697258","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

Soybean plantability in different operating conditions 不同作业条件下的大豆种植性

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2024-04-16 DOI: 10.18227/1982-8470ragro.v18i00.7825

Augusto César de Souza Siqueira, Thalissa Karla Campos Geremias, Túlio De Almeida Machado

{"title":"Soybean plantability in different operating conditions","authors":"Augusto César de Souza Siqueira, Thalissa Karla Campos Geremias, Túlio De Almeida Machado","doi":"10.18227/1982-8470ragro.v18i00.7825","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v18i00.7825","url":null,"abstract":"Many crops of global importance, such as soybeans (Glycine max), come from the sowing process. This stage in the production cycle is the most important since the deposition of the seed in the soil will directly impact final productivity. Therefore, it must be carried out correctly to guarantee a better uniformity of seed distribution. Thus, the objective was to evaluate the interference of operating speed and different furrow closing pressures on the longitudinal distribution of seeds, productivity, soil mobilization, and sowing depth in direct and conventional planting systems. The experimental treatment units had an area of 10 m² distributed in a randomized block design and arranged in a system of sub-subdivided plots, with four replications, being: two types of soil preparation (direct planting and conventional system), and, in each one, two operating speeds (3.42 and 6.82 km h-1) and three pressures in the furrow closing system (12.57; 14.94 and 16.52 kfg). The type of soil preparation system influenced the depth and spacing between seeds. The operating speed of 3.42 km h-1 determined the better longitudinal distribution of the seeds. Soil mobilization and blistering were significantly changed with increasing pressure from the compacting wheels, having the most significant effect at a pressure of 16.52 kgf.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"360 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140698385","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

Economic losses due to abscesses and/or vaccine granulomas in carcasses of cattle slaughtered in Roraima state, Brazil 巴西罗赖马州屠宰牛胴体脓肿和/或疫苗肉芽肿造成的经济损失

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2024-01-14 DOI: 10.18227/1982-8470ragro.v18i00.8010

Everton Ferreira Lima, Joicy Compagnon Mariano, Edson Alencar Conceição de Sousa, André Buzutti de Siqueira, Heloisa Pinto de Godoy Siqueira

{"title":"Economic losses due to abscesses and/or vaccine granulomas in carcasses of cattle slaughtered in Roraima state, Brazil","authors":"Everton Ferreira Lima, Joicy Compagnon Mariano, Edson Alencar Conceição de Sousa, André Buzutti de Siqueira, Heloisa Pinto de Godoy Siqueira","doi":"10.18227/1982-8470ragro.v18i00.8010","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v18i00.8010","url":null,"abstract":"Beef production has been growing in Roraima state, Brazil, in recent years. As a result, poor sanitary management and final product quality have caused economic losses due to inappropriate vaccine use. Thus, the present study aimed at evaluating the economic losses caused by vaccine reactions due to abscesses and/or granulomas in cattle carcasses from slaughterhouses under veterinary inspection in Roraima. The study was carried out from August 2017 to July 2018, in a slaughterhouse, evaluating cattle carcass injuries. A total of 277 carcasses with vaccine reactions were identified, 57.03% with granulomatous lesions and 42.97% abscessive lesions, representing an economic loss of R$ 2,105.20. In regard to lesion location, there was a predominance on the side of the neck (91.34%). There was a statistical difference between the type of injury and carcass weight (P<0.05). The municipalities of Cantá, Caracaraí, Iracema and Rorainópolis showed a statistical difference in granuloma frequency for abscesses, demonstrating probable adequate vaccination management. The information obtained can be used to alert sanitary defense and public health services, through disease control programs for the state’s cattle herd. It is expected that these programs could improve final product quality, thereby reducing the economic losses of producers.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"38 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139530962","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

Stabilization time of chemical attributes and nutritional quality of manipueira for biofertilization 生物肥料操纵草化学属性和营养质量的稳定时间

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2023-12-31 DOI: 10.18227/1982-8470ragro.v17i00.7872

Marcelo Hentges, José Maria Arcanjo Alves, Luiz Fernandes Silva Dionísio, Deyse Cristina Oliveira da Silva, Yenara Alves Guedes, Alberlan Ferreira Gomes, Paulo Roberto Ribeiro Rocha

{"title":"Stabilization time of chemical attributes and nutritional quality of manipueira for biofertilization","authors":"Marcelo Hentges, José Maria Arcanjo Alves, Luiz Fernandes Silva Dionísio, Deyse Cristina Oliveira da Silva, Yenara Alves Guedes, Alberlan Ferreira Gomes, Paulo Roberto Ribeiro Rocha","doi":"10.18227/1982-8470ragro.v17i00.7872","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v17i00.7872","url":null,"abstract":"Manioc flour and gum (starch) have a cultural value for Amazonians. The processing of cassava roots releases manipueira, a liquid waste with a high polluting potential, due to its high levels of hydrocyanic acid. The large volumes of manipueira produced in this sector require safe disposal, whether for cooking (tucupi, flour), drinking or agronomic purposes. The aim of this study was to evaluate the stabilization time of chemical attributes and the nutritional quality of manipueira. For this study, cassava roots of the Amazonas cultivar (bitter or wild) harvested 12 months after the manioc was grown, were processed to extract the manipueira, which was stored and sampled at 0; 2; 5; 8; 11; 18; 25; 32; 46; 62 and 92 days. The variables evaluated were: pH and total cyanide content. Nutrients (N, P, K, Ca, Mg and S) were assessed at 0, 47, 62 and 92 days after storage (DAA). The pH stabilized at 10 DAA, varying between 3.8 and 4.0. The total cyanide content stabilized at 62 DAA, containing 410 mg L-1. The macronutrient contents did not vary with storage time, with the following decreasing order of concentration: K > N > P > Mg > Ca > S, corresponding to the contents: 7.49; 1.25; 1.06; 0.68; 0.41 and 0.18 g-1, respectively.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"86 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130568","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

Methods for overcoming dormancy in cassava seeds 克服木薯种子休眠的方法

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2023-11-29 DOI: 10.18227/1982-8470ragro.v17i00.7810

Carla Klis Ximenes, José Maria Arcanjo Alves, Ricardo Bardales Losano, Deyse Cristina Oliveira Silva, Yenara Alves Guedes, Luiz Fernandes Silva Dionísio

{"title":"Methods for overcoming dormancy in cassava seeds","authors":"Carla Klis Ximenes, José Maria Arcanjo Alves, Ricardo Bardales Losano, Deyse Cristina Oliveira Silva, Yenara Alves Guedes, Luiz Fernandes Silva Dionísio","doi":"10.18227/1982-8470ragro.v17i00.7810","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v17i00.7810","url":null,"abstract":"The propagation of cassava via seminal is an option but faces problems due to dormancy and slow germination. Therefore, the objective was to evaluate the effect of pre-germination treatments, on overcoming Manihot esculenta seed dormancy, clone Gabriela, cultivated in Roraima, Brazil. The experiment was a completely randomized design, with four replicates of 25 seeds, each in seven treatments: intact seeds (CONTROL); lateral scarification the seed (LS); removal of the caruncle (RC); scarification of the caruncle (SC); immersion of the seeds in sulphuric acid for 10 minutes (SA10); for 20 minutes (SA20) and for 30 minutes (SA30). The seeds were sown in trays containing river sand, washed and passed through a 2 mm mesh sieve. The following variables were analyzed: seedling emergence (SE), average emergence time (MET), emergence speed index (ESI), percentage of firm seeds (PFS), percentage of hard seeds (PHS) and percentage of deteriorated seeds (PSDET). The LS (89±7%) and SC (82±5%) treatments were superior to the others, obtaining the shortest MET (11.7±0.38 and 12.8±0.69 days, respectively) and consequently the highest IVE (1.55±0.22 and 1.74±0.22). Sexual propagation of cassava is possible. Lateral scafifying the seeds until the inside of the tegument with exposure of the endosperm with the caruncle intact (LS) and Scarifying the of caruncle until the inside of the tegument (SC) were more efficient seedling emergence and in counting normal cassava seedlings. Soaking seeds in sulphuric acid (AS10; AS20 and AS30) does not overcome the dormancy of cassava seeds.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139209805","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

Morphometric analysis of tree species from the central region of Imperatriz-MA municipality 因佩拉特里斯-马萨诸塞市中部地区树种形态分析

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2023-11-20 DOI: 10.18227/1982-8470ragro.v17i00.7772

Kellyson Matheus Santos Costa, Dalton Angelo, Cristiane Matos da Silva, Wilson Araújo da Silva, Chaiane Rodrigues Schneider, Jaqueline Macedo Gomes

{"title":"Morphometric analysis of tree species from the central region of Imperatriz-MA municipality","authors":"Kellyson Matheus Santos Costa, Dalton Angelo, Cristiane Matos da Silva, Wilson Araújo da Silva, Chaiane Rodrigues Schneider, Jaqueline Macedo Gomes","doi":"10.18227/1982-8470ragro.v17i00.7772","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v17i00.7772","url":null,"abstract":"Urban forestry is essential in urban environments and if poorly planned, ends up affecting its efficiency and the society quality of life, generating conflicts with urban infrastructure. Morphometry allows the growth dynamics of the tree component to be known, predicting the space needed for its development and stability, silvicultural actions and appropriate management in urban environments. In this sense, the objective was to analyze the most common tree species in the central region of the Imperatriz-MA municipality, in terms of their composition and morphometric parameters. Thus, through a census in 228 blocks, all individuals had their dendrometric parameters measured and 2,321 trees, distributed in 69 species and 26 families were counted. Of the total number of individuals, 66% were exotic species and 34% native, with M. tomentosa being the most representative. As for the morphometric parameters, the average total height of the most representative species was 6.2 m, the height of the first bifurcation was 1.2 m, the crown height was 2.1 m, and the average DBH was 0.25 m. The average diameter and the average crown area obtained were 5.37 m and 26.83 m², respectively. As a result, it can be concluded that the Imperatriz forestry can be considered young with recent plantings and also with inadequately managed plants in the adult stage. Azadirachta indica should be progressively replaced by regional native species, with the young tree component managed to provide maximum canopy area and tall forked trunks that occupy less space on the pavement, regardless of their size.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"17 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139258323","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

Genetic diversity and selection using an ideotype in a Formosa papaya population 台湾番木瓜群体的遗传多样性与理想型选择

REVISTA AGRO@MBIENTE ON-LINE Pub Date : 2023-08-14 DOI: 10.18227/1982-8470ragro.v17i00.7568

Fabíola Lacerda de Souza Barros, Sarah Ola Moreira, Sara Dousseau-Arantes, Érica Pereira dos Santos, Ismael Rodrigues Silva

{"title":"Genetic diversity and selection using an ideotype in a Formosa papaya population","authors":"Fabíola Lacerda de Souza Barros, Sarah Ola Moreira, Sara Dousseau-Arantes, Érica Pereira dos Santos, Ismael Rodrigues Silva","doi":"10.18227/1982-8470ragro.v17i00.7568","DOIUrl":"https://doi.org/10.18227/1982-8470ragro.v17i00.7568","url":null,"abstract":"Ideotype is a combination of traits to be sought in a breeding program, supporting the selection process. However, there must be sufficient genetic variability to be explored to ensure success in this process. Thus, this study aimed to evaluate the genetic diversity of a population of Formosa papaya from the cultivar Rubi Incaper 511, maintained by farmers, and the use of an index based on the genotype-ideotype distance for preserving the original traits of the cultivar. A population of 250 individuals, maintained for approximately 10 years, was evaluated for 13 quantitative morpho-agronomic descriptors. Genetic divergence was estimated from the dissimilarity matrix using the mean Euclidean distance, and the dendrogram was formed using the hierarchical method of unweighted pair groups method with arithmetic averages (UPGMA). The index based on the genotype-ideotype distance was used for plant selection, with the cultivar Rubi Incaper 511 being the desired ideotype. The new means of the selected individuals and the selection differential were obtained after this selection. The individuals had fruit mass ranging from 0.73 to 1.99 kg, soluble solids content between 9.63 and 12.68 °Brix, and number of commercial fruits per plant ranging from 23 to 90. The dendrogram divided the genotypes into five groups. The selected individuals exhibited favorable selection differentials for ten traits and were closer to the selected ideotype. The management of this population by the farmers proved to be efficient in maintaining the genetic variability of the cultivar, and the selection through the index based on the genotypeideotype distance can be used to restore the phenotypic pattern of open-pollinated cultivars.","PeriodicalId":299264,"journal":{"name":"REVISTA AGRO@MBIENTE ON-LINE","volume":"43 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113988012","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