scholarly journals Promecops claviger Hustache, 1929 (Coleoptera: Curculionidae): first register in Brazil and first host plant register

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2011 ◽  
Vol 7 (5) ◽  
pp. 616
Author(s):  
Marliton Rocha Barreto ◽  
Fábio Cavalet

For the first time in Brazil and in soybean plants (Glycine max (L.) Merr.), the weevil Promecops claviger Hustache has been identified. The incidence occurred in the city of Sinop, Mato Grosso (11°48’14,64” S, 55°34’55,93” W), in October 2010. 

Nativa ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 09
Author(s):  
Luis Augusto Di Loreto Di Raimo ◽  
Alexandra De Paiva Soares ◽  
Ricardo Santos Silva Amorim ◽  
Diana Medina Espinoza ◽  
Wellington De Azambuja Magalhães ◽  
...  

Objetivou-se com o presente estudo avaliar os efeitos da aplicação de manganês misturado ao fungicida, em plantas de soja. O experimento foi realizado na fazenda Beija-flor, município de Jaciara, estado de Mato Grosso. O delineamento utilizado foi o de blocos casualizados em esquema fatorial com parcela adicional (3x2+1) e quatro repetições. Foram aplicadas três doses de manganês (50, 100 e 150 g ha-1), com duas caldas de aplicação (manganês e manganês + fungicida), quando as plantas encontravam-se em estádio vegetativo e apresentavam 9 trifolíos completamente desenvolvidos (v10). Na parcela adicional (controle) foi aplicado apenas fungicida, também no estádio fenológico v10. As características avaliadas foram altura de plantas, massa de mil grãos, produtividade e teor de manganês foliar. Não ocorreram interações significativas entre os fatores avaliados. A produtividade não foi alterada pelas misturas realizadas, porém, apresentou diferenças significativas em função das doses de manganês, sendo a melhor dose equivalente a 100 g ha-1. A parcela adicional diferiu estatisticamente dos tratamentos que receberam as doses de 50 e 150 g ha-1 (sem fungicida) para a variável massa de mil grãos, e do tratamento que recebeu a dose de 100 g ha-1 de manganês misturado ao fungicida, para a produtividade de grãos. Conclui-se que a aplicação de manganês em mistura com fungicida não influenciou nas características agronômicas das plantas de soja avaliadas, apresentando-se como uma alternativa para diminuição de custos operacionais de aplicação em cultivos comerciais.Palavra-chave: Glycine max (L.) Merrill, antagonismo, produtividade, sinergismo. COMBINING MICRONUTRIENT (MN) AND FUNGICIDE APPLICATIONS IN SOY BEAN PRODUCTIVE SYSTEMS ABSTRACT: The objective of this study was to evaluate the effects of the application of manganese together with fungicide in soybean plants. The experiment was carried on Beija-flor farm, in municipality of Jaciara, Mato Grosso state. The experimental design used was randomized block design in a factorial arrangement with an additional plot (3x2+1) and four replications.  Three manganese doses were applied (50, 100 and 150 g ha-1), with two application mixtures (manganese and manganese + fungicide), at vegetative stage, when the plants had 9 leafs (v10). On the aditional plot (control) only fungicide was applied, also phenological stage v10. The plant height, the mass of a thousand grains, the manganese content in the leaf and the yield, were the variables used to evaluate the effect of the applications. There were no significant interactions between the evaluated factors. Productivity was not altered by different mixtures, but there were found significant differences due to manganese doses. The best dose observed was the equivalent to 100 g ha-1 of manganese. The additional plot differed statistically from the treatments that received doses of 50 and 150 g ha-1 (without manganese) for the mass of thousand grains, and the treatment that received the dose of 100 g ha-1 manganese mixed with fungicide for grain yield. According to these results, the application of manganese and fungicides combined, do not influence the agronomic characteristics of soybean plants evaluated, that way is a valid alternative to reduce operating costs in soy bean production systems.Keywords: Glycine max (L.) Merrill, antagonism, productivity, synergism. DOI:


2021 ◽  
Vol 219 ◽  
pp. 112312
Author(s):  
Yinlong Xiao ◽  
Ying Du ◽  
Yue Xiao ◽  
Xiaohong Zhang ◽  
Jun Wu ◽  
...  

2021 ◽  
Vol 22 (2) ◽  
pp. 920
Author(s):  
Ling Cheng ◽  
Wanling Min ◽  
Man Li ◽  
Lili Zhou ◽  
Chuan-Chih Hsu ◽  
...  

Soybean (Glycine max L.) is a major crop providing important source for protein and oil for human life. Low phosphate (LP) availability is a critical limiting factor affecting soybean production. Soybean plants develop a series of strategies to adapt to phosphate (Pi) limitation condition. However, the underlying molecular mechanisms responsible for LP stress response remain largely unknown. Here, we performed a label-free quantification (LFQ) analysis of soybean leaves grown under low and high phosphate conditions. We identified 267 induced and 440 reduced differential proteins from phosphate-starved leaves. Almost a quarter of the LP decreased proteins are involved in translation processes, while the LP increased proteins are accumulated in chlorophyll biosynthetic and carbon metabolic processes. Among these induced proteins, an enolase protein, GmENO2a was found to be mostly induced protein. On the transcriptional level, GmENO2a and GmENO2b, but not GmENO2c or GmENO2d, were dramatically induced by phosphate starvation. Among 14 enolase genes, only GmENO2a and GmENO2b genes contain the P1BS motif in their promoter regions. Furthermore, GmENO2b was specifically induced in the GmPHR31 overexpressing soybean plants. Our findings provide molecular insights into how soybean plants tune basic carbon metabolic pathway to adapt to Pi deprivation through the ENO2 enzymes.


2014 ◽  
Vol 7 (2) ◽  
pp. 75-80 ◽  
Author(s):  
Bruno Henrique Sardinha de Souza ◽  
Eduardo Neves Costa ◽  
Anderson Gonçalves da Silva ◽  
Arlindo Leal Boiça Júnior

A soja, Glycine max (L.) Merril, é uma das culturas de maior importância econômica para o Brasil, considerada uma commodity nacional devido à sua alta produtividade e participação nas exportações no mercado internacional. Dentre os insetos-pragas que causam danos para essa cultura, nos últimos anos agrícolas têm merecido destaque as lagartas de Spodoptera eridania (Cramer), as quais podem se alimentar tanto de folhas quanto das vagens das plantas de soja, causando prejuízos econômicos para os sojicultores, principalmente nas áreas do Cerrado localizadas na região Centro-Oeste do país. O objetivo da presente revisão é disponibilizar informações sobre os aspectos bionômicos de S. eridania, a fim de dar subsídios para futuras pesquisas sobre o manejo dessa praga.Bionomic Aspects of Spodoptera eridania (Cramer): A Pest in Expansion on Soybean Crop in the Region of Brazilian CerradoAbstract. Soybean, Glycine max (L.) Merril, represents one of the major economically important crops to Brazil, and is considered a national commodity because of its high yield and participation in international trade exportations. Among the insect pests that cause damage to this crop, Spodoptera eridania (Cramer) larvae highlighted in the last agricultural seasons by feeding on leaves and pods of soybean plants, and hence causing economical losses to soybean growers, especially in the Cerrado areas located in the Midwest region of the country. We aimed with this review to provide information about bionomical aspects of S. eridania in order to give subsides for further researches on the management of this pest.


1998 ◽  
Vol 27 (4) ◽  
pp. 513-518 ◽  
Author(s):  
Mauro T. B. Silva ◽  
Nelson Neto ◽  
Clara B. Hoffmann-Campo

Soybean [(Glycine max (L.) Merrill] commercial fields, maintained under a no-till system, were sampled during the crop seasons 1990/91 and 1996/97, in Cruz Alta and Júlio de Castilhos, Rio Grande do Sul State, to determine the distribution of eggs, larvae and adults of Sternechus subsignatus Boheman (Coleoptera : Curculionidae). Soybean plants and soil were examined at different time schedules. Eggs and larvae were recorded in main stems, lateral branches and leaf petioles, divided into the upper third, medium and lower third of soybean plants. Eggs (87%), and larvae (79%) were mainly observed in the main stem and in the medium plant sections (87% and 78%, respectively). Larval movement was not observed because larvae remained inside the galls, in the same area where the eggs were laid. Adults were located in different places depending on the sampling time. At night, adults were observed to move to the upper third of the plant and, during the day, down to the lower third of the plant and to the soil. The insects are normally concealed during their pre- and post- embryonic stage throughout most of the day.


2011 ◽  
Vol 20 (3) ◽  
pp. 253-255 ◽  
Author(s):  
Mariana Granziera Spolidorio ◽  
Mariana de Medeiros Torres ◽  
Wilma Neres da Silva Campos ◽  
Andréia Lima Tomé Melo ◽  
Michelle Igarashi ◽  
...  

The objective of this study was to report for the first time infection by Hepatozoon spp. and Babesia spp. in 10 dogs from the city of Cuiabá, State of Mato Grosso, central-western Brazil. A pair of primers that amplifies a 574 bp fragment of the 18S rRNA of Hepatozoon spp., and a pair of primers that amplifies a 551 bp fragment of the gene 18S rRNA for Babesia spp. were used. Six dogs were positive for Babesia spp., and 9 were positive for Hepatozoon spp. Co-infection of Babesia spp. and Hepatozoon spp. was seen in 5 dogs. Sequenced samples revealed 100% identity with B. canis vogeli, and H. canis. This is the first molecular detection of H. canis in domestic dogs from Cuiabá. Additionally, it is described for the first time the presence of B. canis vogeli circulating among dogs in Cuiabá.


1988 ◽  
Vol 66 (4) ◽  
pp. 683-686 ◽  
Author(s):  
Jeanne M. L. Selker ◽  
John Imsande ◽  
Eldon H. Newcomb

Early emergent nodules on roots of hydroponically grown soybean plants (Glycine max (L.) Merr.) were sectioned serially to locate the site of infection by Bradyrhizobium japonicum. The plants had been inoculated only after their root systems had produced numerous higher order branches. The hydroponic solutions contained all required nutrients, including either a suboptimal concentration of nitrate (0.5 mM) or an excess of nitrate (4.0 mM). In all six nodules examined, three with suboptimal nitrate and three with excess nitrate, we found a centrally located root hair containing an infection thread. We conclude that mature root systems of soybean grown in aqueous culture can undergo infection through root hairs in the way that is typical of young seedlings grown either in pots of vermiculite or pouches.


2010 ◽  
Author(s):  
Ilko Ts. Iliev ◽  
Dora D. Krezhova ◽  
Tony K. Yanev ◽  
Elisaveta B. Kirova ◽  
Angelos Angelopoulos ◽  
...  

2013 ◽  
Vol 35 (84) ◽  
Author(s):  
Luís Felipe Cavalli Pessa ◽  
Edinalva Oliveira ◽  
Rodrigo Penna Nogueira

Uma população do percevejo-castanho-da-raiz foi estudada no município de Primavera do Leste, estado do Mato Grosso. As coletas foram realizadas de junho a outubro de 2005, em cinco estratos de profundidade: 10, 20, 30, 60 e 120 cm. Foram registrados 865 indivíduos; dentre estes, Scaptocoris castanea esteve presente em 621 exemplares. Essa população registrou basicamente dois estágios de desenvolvimento: ninfas (n = 303) e adultos (n = 318). As ninfas foram mais abundantes em julho e adultos em junho e outubro. Ninfas e adultos foram encontrados em todas as profundidades. Entretanto, uma maior concentração ocorreu entre 30 e 120 cm. Em relação aos adultos, 87 eram machos e 231 fêmeas. Houve uma relação positiva entre a abundância de S. castanea e a pluviosidade, porém a temperatura pareceu não influenciar a espécie no local.


2021 ◽  
Vol 22 (20) ◽  
pp. 10943
Author(s):  
Elham Ahmed Kazerooni ◽  
Abdullah Mohammed Al-Sadi ◽  
Il-Doo Kim ◽  
Muhammad Imran ◽  
In-Jung Lee

The present investigation aims to perceive the effect of exogenous ampelopsin treatment on salinity and heavy metal damaged soybean seedlings (Glycine max L.) in terms of physiochemical and molecular responses. Screening of numerous ampelopsin concentrations (0, 0.1, 1, 5, 10 and 25 μM) on soybean seedling growth indicated that the 1 μM concentration displayed an increase in agronomic traits. The study also determined how ampelopsin application could recover salinity and heavy metal damaged plants. Soybean seedlings were irrigated with water, 1.5% NaCl or 3 mM chosen heavy metals for 12 days. Our results showed that the application of ampelopsin raised survival of the 45-day old salinity and heavy metal stressed soybean plants. The ampelopsin treated plants sustained high chlorophyll, protein, amino acid, fatty acid, salicylic acid, sugar, antioxidant activities and proline contents, and displayed low hydrogen peroxide, lipid metabolism, and abscisic acid contents under unfavorable status. A gene expression survey revealed that ampelopsin application led to the improved expression of GmNAC109, GmFDL19, GmFAD3, GmAPX, GmWRKY12, GmWRKY142, and GmSAP16 genes, and reduced the expression of the GmERF75 gene. This study suggests irrigation with ampelopsin can alleviate plant damage and improve plant yield under stress conditions, especially those including salinity and heavy metals.


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