scholarly journals PRODUCTIVE AND MORPH-PHYSIOLOGICAL PARAMETERS OF PEANUT CULTIVARS

2021 ◽  
Vol 5 (1) ◽  
pp. 1-8
Author(s):  
Lucas Aparecido Manzani Lisboa ◽  
Matheus Luis Oliveira Cunha ◽  
Fernando Takayuki Nakayama ◽  
Ignácio José de Godoy ◽  
Rodrigo Aparecido Vitorino ◽  
...  
Keyword(s):  
Experimental Design ◽  
Genetic Variability ◽  
Morphological Characteristics ◽  
Sao Paulo ◽  
Physiological Parameters ◽  
Physiological Characteristics ◽  
São Paulo ◽  
Productive Potential ◽  
Peanut Cultivars

Studies of adaptability, agronomic characterization and productive potential of peanuts, including information on morphophysiological characteristics, make it a strategy for choosing the best cultivar. In view of the above, the objective of this work was to verify the physiological characteristics and productivity of different peanut cultivars. In January of 2019 an experiment was installed in the Paulista Agribusiness Technology Agency, Regional Paulista Regional Camp, located in the municipality of Adamantina, state of São Paulo. The experimental design was in randomized blocks with six treatments, that is, peanut cultivars: Tatu, Semper Verde, OL3, OL5, 503 and 505 and with six replications totaling 36 plots, where each plot was composed of three plants. The Tatu cultivar showed low values ​​of morphological characteristics and productivity compared to other cultivars. The cultivars OL3, OL5, 503 and 505 showed higher averages of productivity. Great genetic variability was observed among the cultivars evaluated in this research due to the results obtained in the physiological and productivity variables.

scholarly journals PHYSIOLOGICAL PARAMETERS OF COTTON CULTIVARS IN WEST PAULISTA

2021 ◽  
Vol 7 (1) ◽  
pp. 9
Author(s):  
Lucas Aparecido Manzani Lisboa ◽  
Matheus Luis Oliveira Cunha ◽  
Fernando Takayuki Nakayama ◽  
Paulo Alexandre Monteiro de Figueiredo
Keyword(s):  
Experimental Design ◽  
Stomatal Conductance ◽  
Sao Paulo ◽  
Physiological Parameters ◽  
Physiological Characteristics ◽  
Assimilation Rate ◽  
Leaf Transpiration ◽  
Production Environments ◽  
Internal Concentration ◽  
Physiological Studies

Cotton varieties develop differently because they present different physiological characteristics in production environments. This study aimed to know the physiological characteristics of cotton. The experiment was carried out at the São Paulo Agribusiness Technology Agency (APTA), Alta Paulista region. The experimental design used was Entirely Randomized (DIC), with six cotton cultivars: IMA5801B2RF; FM975WS; TMG47B2RF; TMG81WS; FM944GL and IACRDN. Where the following physiological parameters were determined: Assimilation rate CO2, leaf transpiration, stomatal conductance, internal concentration of CO2 in the substomatic chamber and efficient use of water. The cotton varieties showed different physiological characteristics, the IMA5801B2RF variety had the lowest performance, which may reflect low productivity. Further physiological studies are needed to understand the Cotton varieties behavior

scholarly journals Density and diversity of filamentous fungi in the water and sediment of Araçá bay in São Sebastião, São Paulo, Brazil

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Sonia Assami Doi ◽  
Aline Bartelochi Pinto ◽  
Maria Carolina Canali ◽  
Daiane Raquel Polezel ◽  
Roberta Alves Merguizo Chinellato ◽  
...  
Keyword(s):  
Filamentous Fungi ◽  
Chemical Properties ◽  
Morphological Characteristics ◽  
Sao Paulo ◽  
Northern Coast ◽  
São Paulo ◽  
Mangrove Swamp ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Pharmaceutical Industries

Abstract Araçá Bay, located in the city of São Sebastião, São Paulo, Brazil, is a protected area of substantial complexity. It represents the last remaining mangrove swamp preserve between the cities of Bertioga and Ubatuba on the northern coast of São Paulo State. This mangrove swamp has specific physical and chemical properties, and it shelters a wide variety of life, including fungi. These microorganisms are present in a variety of species with different morphophysiological features, and they have the ability to produce enzymes of biotechnological importance. The goal of this study was to quantify, isolate, and identify filamentous fungi in water and sediment samples from the Araçá Bay mangrove swamp in São Sebastião. Two samplings were performed in the summer and two were performed in the winter. The samples were collected from intertidal zones, and dissolved oxygen (DO), temperature, salinity, and pH were measured in situ. The spread plate technique was used to inoculate the samples collected on plates with a potato dextrose agar (PDA) medium. A total of 208 colonies (68 from water samples and 140 from sediment samples) were isolated, and they were identified based on their morphological characteristics. Filamentous fungus density was higher in the sediment than in the water, and the samplings performed in the winter revealed a higher density than those performed in the summer. Though some of the environmental parameters were not ideal for fungal development, a high quantity of growth was nevertheless observed. When the isolated colonies were analyzed, the greatest diversity and species richness were found in the summer samples. The genera identified in all of the samples were Aspergillus, Penicillium, Cladosporium, and Fusarium. The pathogenic species found from these genera were Aspergillus fumigatus, A. terreus, Penicillium citrinum, and P. chrysogenum. These species are also able to produce enzymes that offer a variety of applications. The fungal community described herein represents the diversity found in this mangrove swamp during the period studied. Many of the fungus species found are pathogenic and may be useful due to their ability to produce specific enzymes applicable in the biotechnological and pharmaceutical industries.

scholarly journals CÁPSULA POROSA: INTERFERÊNCIA NA AMOSTRA DA SOLUÇÃO DO SOLO E METODOLOGIA DE LAVAGEM

Irriga ◽  
2009 ◽  
Vol 14 (4) ◽  
pp. 441-448
Author(s):  
Bruno F. F. Pereira ◽  
Tamara M. Gomes ◽  
Sandra F. Nogueira ◽  
Celia R. Montes ◽  
Adolpho J. Melfi
Keyword(s):  
Experimental Design ◽  
Soil Solution ◽  
Limit Of Detection ◽  
Sao Paulo ◽  
Deionized Water ◽  
São Paulo ◽  
Real Concentration ◽  
Ceramic Cups ◽  
Blank Solution

CÁPSULA POROSA: INTERFERÊNCIA NA AMOSTRA DA SOLUÇÃO DO SOLO E METODOLOGIA DE LAVAGEM  Bruno F. F. Pereira,1; Tamara M. Gomes2; Sandra F. Nogueira3; Célia R. Montes3; Adolpho J. Melfi11Departamento de Ciência do Solo, Núcleo de Pesquisa em Geoquímica e Geofísica da Litosfera, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba, SP, [email protected]úcleo de Pesquisa em Geoquímica e Geofísica da Litosfera, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba, SP3Núcleo de Pesquisa em Geoquímica e Geofísica da Litosfera, CENA, Universidade de São Paulo, Piracicaba, SP  1 RESUMO As cápsulas porosas de cerâmica (CP) utilizadas para amostrar a solução do solo podem liberar íons na solução interferindo na concentração de determinados elementos nas amostras. Este trabalho tem como objetivos avaliar: (i) a dessorção de cátions interferentes pela CP (ii) a eficiência de uma metodologia de tratamento das CPs, visando minimizar a desorção de cátions. O experimento foi conduzido em laboratório. O delineamento experimental foi inteiramente casualizado contendo três tratamentos e três repetições. a) Lavagem externa da CP com água deionizada + lavagem em solução HCl (0,1 mol L-1) + 4 ciclos de água deionizada (HCl+A); b) Testemunha: sem lavagem da CP (S). As soluções resultantes foram comparadas com água deionizada (teste em branco - TB). Não foi observado a dessorção significativa de N, P, K, S, B, Cu, Fe, Mn, Zn e Al pelas CPs. Cálcio, Mg e Na foram dessorvidos pelas CPs nas seguintes concentrações; 6,73; 0,20 e 0,70 mg L-1, respectivamente, e interferiram significativamente na solução extraída quando comparados com a solução TB. Após o tratamento das CPs, a concentração destes elementos foram inferiores ao limite de detecção para Ca e Na e 0,01 mg L-1 para Mg, não diferindo significativamente da solução em branco. UNITERMOS: íons, limpeza de cápsula porosa, interferência, dessorção  PEREIRA, B. F. F.; GOMES, T. M.; NOGUEIRA, S. F.; MONTES, C. R.; MELFI, A. J. INTERFERENCE OF CERAMIC POROUS CUP ON SOIL SOLUTION SAMPLES  2 ABSTRACT             Ceramic porous cups (CP) used to soil solution sampling in situ can release ions on extracted solution interfering on the real concentration of some elements of the sample. The objectives of this study were to evaluate; (i) cation desorption by the CP and (ii) the efficiency of a new methodology of CPs treatment to decrease the cation desorption. The study was carried out in laboratory. The experimental design was completely randomized with two treatments and three replications; a) external washing of CP with deionized water + washing in HCl (0.1 mol L-1) solution + 4 washing cycles with deionized water (HCl+A); b) No washing of CP (S). The extracted solution from each treatment (HCl+A and S) was compared with deionized water (blank –TB). There was no significant desorption of N, P, K, S, B, Cu, Fe, Mn, Zn and Al by the CPs. Ca, Mg and Na were desorbed by CP  and had the following concentrations: 6.73, 0.20 and 0.70 mg L-1 respectively. They interfered significantly on the extracted solution when compared with TB solution. After the CPs treatment, Ca and Na concentration on solution were below the limit of detection, and Mg concentration was 0.01 mg L-1, and there was no difference from the blank solution. KEYWORDS: ions, ceramic cups clean-up, interference, desorption

scholarly journals Morphological divergence of seedlings Calophyllum brasiliense cambes collected in São Paulo and Tocantins

2021 ◽  
Author(s):  
Ildon Rodrigues Nascimento ◽  
Cândida Pereira da Silva ◽  
Irais Dolores Pascual-Reyes ◽  
Aline Torquato Tavares ◽  
Edilson Nonato da Silva ◽  
...  
Keyword(s):  
Root Length ◽  
Quality Index ◽  
Morphological Characteristics ◽  
Dry Mass ◽  
Sao Paulo ◽  
The State ◽  
Morphological Divergence ◽  
São Paulo ◽  
Calophyllum Brasiliense ◽  
Number Of Leaves

Objective: The objective was to quantify the morphological diversity of Calophyllum brasiliense Cambes from four municipalities of the State of Tocantins employing morphological characteristics, to strengthen information on conservation and future breeding of the species. Methodology: Seeds were collected from four municipalities in the State of Tocantins and one in the State of São Paulo. The following were evaluated: plant height, stem diameter, root length, number of leaves, leaf area, root dry mass, shoot dry mass, total dry mass, and Dickson´s quality index. The data were subjected to univariate analysis of variance, Tocher grouping method, and UPGMA, obtaining a dendrogram through the generalized Mahalanobis distance. Results: The results showed a statistical difference of 1 and 5% probability. Dueré stood out in stem diameter(5.52 mm), Sandolandia in height (34.84 cm) and root length (42.13 cm). Formoso stood out in the number of leaves (34 leaves). Lagoa da Confusão in leaf area (856.28 cm 2 ) and São Paulo in root dry mass (16.20 g), shoot dry mass (12.38 g), total dry mass (16.20 g), and Dickson´s quality index (1.57). Implications: Variations in morphological characteristics can be used as a tool for genetic studies of guanandi progeny accordingto their similarity and/or differences. Conclusions: The morphological divergence evidenced that among the five studied areas it is possible to direct the collection of seeds to subsidize conservation strategies and future breeding of the species.

scholarly journals Nitrogen and potassium fertilization on ‘Caipira’ and ‘BRS Princesa’ bananas in the Ribeira Valley

2016 ◽  
Vol 20 (8) ◽  
pp. 702-708 ◽  
Author(s):  
Edson S. Nomura ◽  
Francine L. Cuquel ◽  
Erval R. Damatto Junior ◽  
Eduardo J. Fuzitani ◽  
Ana L. Borges ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Panama Disease ◽  
Fertilizer Recommendation ◽  
Paulo State ◽  
Productive Potential ◽  
Production Cycles ◽  
São Paulo State ◽  
Banana Plantation ◽  
Banana Crop

ABSTRACT ‘BRS Princesa’ (AAAB) and ‘Caipira’ (AAA) banana cultivars have similar sensorial features in comparison to the ‘Maçã’ banana. They are resistant to Panama disease, which allows them to grow in the Ribeira Valley, the largest banana plantation area in the São Paulo State. However, there is no information on how to fertilize crop under these edaphoclimatic conditions. This study aimed to evaluate the development and production of ‘Caipira’ and ‘BRS Princesa’ bananas, by applying four fertilization doses of N and K2O (no fertilization; 175 and 285 kg ha-1 year-1; 350 and 570 kg ha-1 year-1; 525 and 855 kg ha-1 year-1). The most adequate fertilizer recommendation for ‘Caipira’ and ‘BRS Princesa’ cultivars was 150% of the standard recommendation for banana (525 kg ha-1 year-1 of N and 855 kg ha-1 year-1 of K2O) in both production cycles, promoting adequate growth and production, since most of the evaluated characteristics showed linear responses with the increase in the fertilization doses. ‘Caipira’ and ‘BRS Princesa’ require higher amounts of N and K than that recommended for the banana crop in the São Paulo State, in order to express their productive potential.

scholarly journals A new species of Lizerius Blanchard (Hemiptera: Drepanosiphidae) from Brazil

2019 ◽  
Vol 109 ◽  
Author(s):  
Suzan B. Z. Cunha ◽  
Carlos R. Sousa-Silva
Keyword(s):  
New Species ◽  
Morphological Characteristics ◽  
Aphid Species ◽  
Sao Paulo ◽  
Persea Americana ◽  
São Paulo ◽  
A New Species

ABSTRACT In this study a new aphid species of the genus Lizerius Blanchard, 1923 (Hemiptera: Drepanosiphidae) is described. Samplings were carried out in the municipalities of Porto Ferreira and Pedregulho, state of São Paulo, Brazil, over plants of Persea americana Mill, 1768 and Terminalia brasiliensis Spreng, 1825. Morphological characteristics of apterous and alate are described and represented by drawings.

Supplementary data of Henneguya leporinicola (Myxozoa, Myxosporea) a parasite of Leporinus macrocephalus from fish farms in the state of São Paulo, Brazil

2015 ◽  
Vol 60 (3) ◽  
Author(s):  
Kassia Roberta Hygino Capodifoglio ◽  
Edson Aparecido Adriano ◽  
Marcia Ramos Monteiro da Silva ◽  
Antônio Augusto Mendes Maia
Keyword(s):  
18S Rdna ◽  
Gill Filament ◽  
Morphological Characteristics ◽  
Sao Paulo ◽  
The State ◽  
Rdna Sequence ◽  
São Paulo ◽  
Fish Farms ◽  
Basal Branch ◽  
18S Rdna Sequence

AbstractHenneguya leporinicola is a parasite of the gill filament of Leporinus macrocephalus, a characiform fish belonging to the Anostomidae family, which is of major economic importance. Despite the damage it causes in fish, little is known about this parasite. Therefore, a study was undertaken with fourteen specimens of L. macrocephalus taken from fish farms in the state of Sao Paulo. The fish were collected and examined searching for lesions and/or myxosporean plasmodia. One of the specimens (7.14%) contained white elongated plasmodia in the gill filament. The mature spores had elongated bodies with polar capsules of equal size and a caudal length greater than body length. Morphological characteristics identified the parasite as H. leporinicola. Molecular analysis of the 18S rDNA sequence resulted in a 1954 bp, demonstrating significant genetic differences with previously described species of Henneguya/Myxobolus. Phylogenetic analysis comparing the 18S rDNA sequence of H. leporinicola with other species, previously described in South America, and the 20 closest species as indicated by BLASTn Max Score showed H. leporinicola as a basal branch of a subclade composed by Henneguya spp. parasite of characiform hosts.

scholarly journals GENETIC VARIABILITY OF Rottboellia cochinchinensis POPULATIONS IN SUGARCANE FIELDS

2016 ◽  
Vol 34 (3) ◽  
pp. 475-484 ◽  
Author(s):  
A.R. SCHIAVETTO ◽  
D. PERECIN ◽  
L.R. PINTO ◽  
C.A.M. AZANIA ◽  
F.S. ZERA ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Genetic Similarity ◽  
Sao Paulo ◽  
The State ◽  
Group Method ◽  
Jaccard Coefficient ◽  
São Paulo ◽  
Pair Group ◽  
Analysis System ◽  
Rottboellia Cochinchinensis

ABSTRACT The hypothesis assumed was the existence of biotypes within populations, which has been the cause of difficulties in itchgrass control by farmers. For that, the genetic variability of three populations of Rottboellia cochinchinensis in sugarcane fields in the state of São Paulo was investigated by using the Amplified Fragment Length Polymorphism (AFLP) technique. Six primers were used to obtain molecular characterization data. AFLP gels were analyzed based on marker presence (1) and absence (0). Using NTSYs (Numerical Taxonomy and Multivariate Analysis System) software, the genetic similarity was calculated by the Jaccard coefficient and, from that, a dendrogram was built through the UPGMA (Unweighted Pair Group Method Arithmetic averages) method, besides determining the isopolymorphic marks. The average genetic similarities seen in the region was 0.742 for Igarapava, 0.793 for Mococa and 0.808 for Piracicaba. Between regions it was 0.730 (Igarapava vs Mococa), 0.735 (Mococa vs Piracicaba) and 0.694 (Igarapava vs Piracicaba). In line with the dendrogram, it is possible to detect the formation of two groups, one with 8 plants from Igarapava and Mococa and the other with 21 plants from Igarapava, Mococa and Piracicaba, as well as the presence of 1 discriminant individual from Piracicaba. It can be concluded that the genetic similarity among itchgrass populations from the state of São Paulo was high (72%), which denotes that the difficulties in chemical management are not only due to different biotypes but also due to other characteristics linked to tolerance of the species to herbicides. However, biotype existence cannot be discarded because of the polymorphic marks generating 22% average genetic variability.

scholarly journals Genetic variability among natural populations of Zaprionus indianus (Drosophilidae) in the States of São Paulo and Minas Gerais, Brazil

2010 ◽  
Vol 9 (3) ◽  
pp. 1504-1512
Author(s):  
D. Braganholi ◽  
M. Blo ◽  
B.W. Bertoni ◽  
A.L. Fachin ◽  
R.O. Beleboni ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Natural Populations ◽  
Minas Gerais ◽  
Sao Paulo ◽  
São Paulo ◽  
Zaprionus Indianus

scholarly journals Infestation by Enneothrips flavens Moulton and yield of peanut cultivars

2005 ◽  
Vol 62 (5) ◽  
pp. 469-472 ◽  
Author(s):  
Andrea Rocha Almeida de Moraes ◽  
André Luiz Lourenção ◽  
Ignácio José de Godoy ◽  
Gustavo de Carvalho Teixeira
Keyword(s):  
Field Experiment ◽  
Chemical Control ◽  
Growing Season ◽  
Sao Paulo ◽  
Insect Control ◽  
High Population ◽  
Yield Reduction ◽  
São Paulo ◽  
Peanut Cultivars ◽  
Reduction Percentage

Because of damages caused, general occurrence in crops, and high population levels, the most important peanut pest in Brazil is the thrips Enneothrips flavens Moulton (Thysanoptera: Thripidae). A field experiment was carried out during the 2001/2002 growing season, in Campinas and Pindorama, State of São Paulo, Brazil, to evaluate the influence of E. flavens on yield of six peanut cultivars. Treatments comprised three cultivars of the upright type and three of the runner type, with and without chemical control of the insect. Thrips infestation was evaluated by insect countings on young leaflets. Yield and yield reduction percentage due to the lack of thrips control were estimated. The lack of insect control resulted in yield reductions varying from 19.5 to 62.7%, depending on the level of infestation, cultivars, and location. Runner cultivar IAC Caiapo, presented the lowest yield reductions in both locations (19.5 and 28.7%), even when exposed to thrips infestation for a longer period because of its longer cycle. This fact characterizes 'IAC Caiapo' as resistant to E. flavens.

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