Pesquisa Agropecuaria Brasileira最新文献_第7页

Genetic diversity, yield, and fruit quality of persimmon in the tropics 热带柿子的遗传多样性、产量和果实品质

4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-01-01 DOI: 10.1590/s1678-3921.pab2023.v58.03242

Pedro Maranha Peche, Rafael Pio, María Luisa Badenes, Mar Naval, Francisco Gil-Muñoz, Flávio Gabriel Bianchini, Guilherme Locatelli, Daniela da Hora Farias

{"title":"Genetic diversity, yield, and fruit quality of persimmon in the tropics","authors":"Pedro Maranha Peche, Rafael Pio, María Luisa Badenes, Mar Naval, Francisco Gil-Muñoz, Flávio Gabriel Bianchini, Guilherme Locatelli, Daniela da Hora Farias","doi":"10.1590/s1678-3921.pab2023.v58.03242","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03242","url":null,"abstract":"Abstract The objective of this work was to determine the genetic diversity, yield, and fruit quality of persimmon genotypes grown in the tropics, in order to select promising genetic materials. DNA extraction was performed on young leaves of 19 persimmon genotypes. For pomological characterization, 15 genotypes were selected. From each genotype, 50 fruit at the physiological maturity stage were harvested in the morning, in order to determine the following parameters: physicochemical characteristics; and the productive variables number of fruit per plant, average fruit fresh mass, average yield, and estimated average yield in two seasons. Twenty SSR markers were tested, out of which 12 were selected to evaluate genetic similarity, which allowed of the identification of distinct groups. The mean genetic diversity value found was 0.41, which is an indicative of low diversity among the analyzed persimmon genotypes. The 'Guiombo', 'Iapar 125', 'Kakimel', 'Mikado RJ', 'Rama Forte Tardio', and 'Taubaté' genotypes show a high yield. The genotypes classified as pollination-constant astringent ('Pomelo', 'Regina', 'Rubi', and 'Taubaté') and those classified as pollination-variant astringent ('Rama Forte', 'Guiombo', and 'Cereja') are potential materials for selection and genetic breeding programs due to their excellent fruit physicochemical characteristics. The investigation through molecular markers is an efficient approach to study the genetic diversity of persimmon genotypes grown in the tropics.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"24 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":"135262479","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

Genotypic diversity and genetic parameters of 'Tahiti' acid lime using different rootstocks 不同砧木‘塔希提’酸石灰基因型多样性及遗传参数

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-11-28 DOI: 10.1590/s1678-3921.pab2023.v58.02768

Renan Garcia Malikouski, M. A. Peixoto, F. M. Ferreira, Andréia Lopes de Morais, R. S. Alves, M. Zucoloto, D. Barbosa, L. L. Bhering

{"title":"Genotypic diversity and genetic parameters of 'Tahiti' acid lime using different rootstocks","authors":"Renan Garcia Malikouski, M. A. Peixoto, F. M. Ferreira, Andréia Lopes de Morais, R. S. Alves, M. Zucoloto, D. Barbosa, L. L. Bhering","doi":"10.1590/s1678-3921.pab2023.v58.02768","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.02768","url":null,"abstract":"Abstract The objective of this work was to estimate the genetic parameters and to evaluate the genotypic diversity of 12 'Tahiti' acid lime (Citrus latifolia) genotypes grafted onto two rootstocks. The experiment was carried out from July 2017 to January 2019, in the municipality of São Mateus, in the state of Espírito Santo, Brazil. Vegetative (stem diameter, canopy projection diameter, and plant height), productive (yield and fruit number), and fruit quality (fruit diameter, soluble solids content, and juice yield) traits were determined. A mixed model was used to estimate heritability and repeatability coefficients, as well as to predict clonal values. Scion diversity was determined through the standardized mean difference of Euclidean distances, and genotypes were clustered by modified Tocher. Clustering quality and trait importance were evaluated using the principal component analysis (PCA). Genotypic variance was observed, which is indicative of the possibility of selection of superior genotypes. The Tocher method showed the presence of three clusters, which is in alignment with the PCA results. The multivariate analyses allows of the selection and the recommendation of superior 'Tahiti' acid lime genotypes.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67609753","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

Chemical and cultural management strategies for glyphosate-resistant sourgrass in central Brazil 巴西中部抗草甘膦酸草的化学和栽培管理策略

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-11-28 DOI: 10.1590/s1678-3921.pab2023.v58.02900

N. M. Correia

{"title":"Chemical and cultural management strategies for glyphosate-resistant sourgrass in central Brazil","authors":"N. M. Correia","doi":"10.1590/s1678-3921.pab2023.v58.02900","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.02900","url":null,"abstract":"Abstract The objective of this work was to evaluate different chemical treatments, associating herbicide combinations with the maintenance of forage species in the off-season, for the management of glyphosate-resistant sourgrass (Digitaria insularis) in a soybean crop. The experimental design was a randomized complete block in a 4×5 split-plot arrangement, with four replicates. The treatments consisted of: four combinations of the clethodim, glyphosate, haloxyfop-p-methyl, glufosinate ammonium, and s-metolachlor herbicides in the plots; green covers with the Massai, BRS Tamani, and BRS Zuri cultivars of Panicum maximum and with Urochloa ruziziensis, as well as fallow, in the subplots; and a control with the isolated application of glyphosate at the desiccation and post-emergence of the soybean crop infested with sourgrass and weeded. The herbicides tested before sowing and at post-emergence of soybean promoted a control above 90% of adult sourgrass plants until grain harvest. After harvest, there was a new emergence of sourgrass, mainly in the plots without green cover in the off-season. Overseeding soybean with forage species allowed of the establishment of these plants, which consequently interfered in sourgrass emergence and growth. The chemical treatments with herbicide combinations associated with the maintenance of forage species in the off-season are effective for the control of adult glyphosate-resistant sourgrass plants.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67609964","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

Investigation of genetic diversity and phylogenetic relationship of Ctenopharyngodon idella from different regions of Punjab by using SSR Markers 利用SSR标记研究旁遮普省不同地区毛羽鱼的遗传多样性及系统发育关系

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-03-10 DOI: 10.19045/BSPAB.2022.110022

M. Babar

引用次数: 0

Epidemiological study on Brucellosis in Azi-Kheli buffalo in district Swat Khyber Pakhtoon Khwa 斯瓦特开伯尔-普赫图赫瓦地区Azi-Kheli水牛布鲁氏菌病流行病学研究

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-03-10 DOI: 10.19045/BSPAB.2022.110031

Tariq Aziz

引用次数: 0

Performance of sunflower (Helianthus annuus L.) genotypes morphological and yield traits under water deficit conditions 水分亏缺条件下向日葵基因型、形态及产量性状的表现

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-03-10 DOI: 10.19045/BSPAB.2022.110009

Faiza Khatoon Rajper

引用次数: 1

Recovery time of patients infected from COVID-19 in Pakistan 巴基斯坦新冠肺炎患者的康复时间

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-03-10 DOI: 10.19045/BSPAB.2022.110026

Naseem Asghar

{"title":"Recovery time of patients infected from COVID-19 in Pakistan","authors":"Naseem Asghar","doi":"10.19045/BSPAB.2022.110026","DOIUrl":"https://doi.org/10.19045/BSPAB.2022.110026","url":null,"abstract":"The present study was aimed to improve the general public understanding of COVID-19 pandemic, current study aims to estimate the recovery time of patients infected from COVID-19. Data for this retrospective study was taken from the Saidu group of teaching hospitals district Swat, Khyber Pakhtunkhwa, Pakistan. The study period was form March 24, 2020, to August 25, 2020. A total of 372 COVID-19 positive cases from March 2020 to August 2020 were included in the study. The entry point of each patient was the date of admission in the hospital and the event of interest was the recovery of a patient from COVID-19. Variable of interest were date of admission, date of discharge, age and gender for all patients. All 372 patients were COVID-19 positive recorded between the first positive to the first negative SARS-CoV-2 PCR test results. The Kaplan Meier estimator was used to obtain the recovery time of patients in days from COVID-19 diagnosis. Present study estimated average time of recovery from COVID-19 in district Swat which was 8 days with 0.95% C.I. (7-9) days. The difference between recovery time for males and females was not significant but the difference between recovery time for age groups was significant using the log-rank test.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"64 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86197241","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

Incidence of Hepatitis C virus infection in Swat District, Pakistan: a preliminary study 巴基斯坦斯瓦特地区丙型肝炎病毒感染发生率:初步研究

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-03-10 DOI: 10.19045/BSPAB.2022.110006

Z. Khan

引用次数: 1

Blast disease and wheat production in Brazil 巴西稻瘟病与小麦生产

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-01-01 DOI: 10.1590/s1678-3921.pab2022.v57.02487

G. Torres, J. R. Ferreira, E. Binneck, J. Maciel, L. Consoli

{"title":"Blast disease and wheat production in Brazil","authors":"G. Torres, J. R. Ferreira, E. Binneck, J. Maciel, L. Consoli","doi":"10.1590/s1678-3921.pab2022.v57.02487","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02487","url":null,"abstract":"Abstract This review paper presents the current context of wheat production in Brazil, the management strategies to reduce yield losses due to blast, and the biotechnological approaches to improve wheat resistance. Wheat blast or brusone is caused by the Magnaporthe oryzae Triticum (MoT) pathotype fungus that can infect all the aboveground parts of the plant. The main symptom of the blast disease is spike bleaching that impairs grain production, causing yield losses up to 100% in susceptible wheat cultivars. The first world report of blast in wheat spikes was in Brazil, in 1985, and, currently, the disease is the main constraint to wheat cultivation in tropical and subtropical areas of the Cerrado and Mata Atlântica biomes. For a long time, the use of fungicides has been found to be ineffective under high-pressure disease conditions. However, recent works have pointed out that fungicide efficiency depends on the integration of other control measures, particularly the choice of cultivars with moderate resistance. In this review paper, the high variability of wheat reaction to MoT is presented, as well as a panel of resistant or moderately resistant cultivars (including non-2NS carriers), promptly available for cultivation in regions where blast is endemic.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"123 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67605667","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

Selection of common bean genotypes with higher macro- and micromineral concentrations in the grains 籽粒中宏微量元素含量较高的普通豆类基因型的选择

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2022-01-01 DOI: 10.1590/s1678-3921.pab2022.v57.02757

N. D. Ribeiro, G. R. Kläsener, Henrique da Silva Argenta, F. F. D. Andrade

{"title":"Selection of common bean genotypes with higher macro- and micromineral concentrations in the grains","authors":"N. D. Ribeiro, G. R. Kläsener, Henrique da Silva Argenta, F. F. D. Andrade","doi":"10.1590/s1678-3921.pab2022.v57.02757","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02757","url":null,"abstract":"Abstract The objective of this work was to evaluate the genetic variability of common bean (Phaseolus vulgaris) genotypes of different grain types as to macro- and micromineral concentrations, as well as to select superior genotypes by the multiplicative index. A total of 22 common bean genotypes were evaluated in experiments carried out in the dry and rainy seasons. The concentration of six minerals (potassium, phosphorus, magnesium, iron, zinc, and copper) was determined, and the multiplicative index was applied to individual and combined experiments. There was a significant effect of the genotype × environment interaction on the concentration of all minerals, and, when the genotype effect was decomposed into grain types, the genotypes differed as to the concentration of three or more minerals. There is genetic variability in the concentration of macro- and microminerals in the common bean genotypes evaluated in the dry and rainy seasons. In the combined experiments, high heritability estimates (≥ 62.60%) and a greater total genetic gain (283.59%) are observed. The multiplicative index applied to combined experiments allows the selection of superior common bean genotypes of the following grain types: red (Amendoim comprido and Light Red Kidney), cranberry ('BRS Executivo' and 'Hooter'), and carioca ('IPR Siriri'), which have high phosphorus and iron concentrations; Amendoim comprido also stands out for its high potassium concentration.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67606991","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