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au:Schneider, Leonardo André

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Phenological cycle and thermal accumulation in the genotypes of sweet orange in Southern Brazil
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Schneider, Leonardo André

; Gonzatto, Mateus Pereira

; Boettcher, Gerson Nestor

; Griebeler, Sabrina Raquel

; Munhoz, Bruno de Oliveira

; Schwarz, Sergio Francisco

Revista Brasileira de Fruticultura

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2024, Volume 46 elocation e-033

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O objetivo deste trabalho foi estudar a fenologia de diversas cultivares de laranjeiras-doces e sua relação com os graus-dia acumulados (GDA), nas condições da Depressão Central do RS. Para isso, 25 genótipos foram avaliados por três safras consecutivas, entre 2015 e 2018, conforme a escala fenológica BBCH. O experimento foi conduzido em Coleção de Citros localizada no município de Eldorado doSul-RS, Brasil. Calcularam-se, os GDAs para cada intervalo entre os estádios fenológicos, bem como para todo o ciclo. O primeiro deles, inchamento das gemas, aconteceu concentradoentre meados de julho e início de agosto. A brotação, ainda no inverno, aumentou riscos dedanos por geadas. O pleno florescimento ocorreu entre 28 de agosto e 22 de setembro,onde as laranjeiras ‘Cabula’, ‘Rubi’, ‘Lima Verde’ e ‘Folha Murcha’ foram asprimeiras; e ‘Sanguinea’, ‘Salustiana’, ‘Midknight’ e ‘Jaffa’, as últimas. O último estádio avaliado, mudança da cor da casca dos frutos, ocorreu entre o início de abril até fins de maio, com2.306,4 a 2.619,4 GDAs, desde o início da brotação. As laranjeiras apresentaram comportamentodistinto,quando comparadas entre os genótipos e entre os anos. Definiram-se dois gruposde cultivares:precoces e tardias. laranjeirasdoces doces grausdia graus dia GDA, GDA , (GDA) RS isso 2 consecutivas 201 2018 BBCH doSulRS, doSulRS doSul RS, doSul-RS Brasil Calcularamse, Calcularamse Calcularam se, se Calcularam-se fenológicos ciclo deles gemas brotação inverno geadas setembroonde setembro onde ‘Cabula, Cabula ‘Cabula ‘Cabula’ ‘Rubi, Rubi ‘Rubi ‘Rubi’ Lima Verde Folha Murcha asprimeiras ‘Sanguinea, Sanguinea ‘Sanguinea ‘Sanguinea’ ‘Salustiana, Salustiana ‘Salustiana ‘Salustiana’ ‘Midknight Midknight ‘Jaffa, Jaffa ‘Jaffa ‘Jaffa’ últimas avaliado frutos maio com23064 com2 306 4 com2.306, 26194 619 2.619, comportamentodistintoquando comportamentodistinto quando anos Definiramse Definiram cultivaresprecoces precoces tardias (GDA 20 com2306 30 com2.306 2619 61 2.619 com230 3 com2.30 261 6 2.61 com23 com2.3 26 2.6 com2. 2.

Abstract The aim of this work was to study the phenology of several sweet orange cultivars and their relationship with the accumulated degree-day (ADD), under the conditions of the Depressão Central of Rio Grande do Sul, in Southern Brazil. For this, 25 genotypes were evaluated for three consecutive growing seasons between 2015 and 2018. The experiment was carried out in a Citrus Collection located in municipality of Eldorado do Sul, RS, Brazil. The ADD was calculated for each interval between the phenological stages, as well as for the entire cycle. The first one, swelling of the buds, was concentrated between mid-July and early August. Sprouting in winter increased the risk of frost damage. Full bloom occurred between August 28 and September 22, when the orange trees ‘Cabula’, ‘Rubi’, ‘Lima Verde’ and ‘Folha Murcha’ were the first to bloom and ‘Sanguinea’, ‘Salustiana’, ‘Midknight’ and ‘Jaffa’ the last. The last stage evaluated, the skin color change of the fruits, occurred between the beginning of April and the end of May, with 2,306.4 to 2,619.4 ADD, since the beginning of sprouting. The orange trees showed different behavior when compared between genotypes and between years. Two groups of cultivars were defined: early and late. degreeday degree day , (ADD) Sul Brazil 2 201 2018 RS stages cycle one buds midJuly mid July damage 22 ‘Cabula, Cabula ‘Cabula ‘Cabula’ ‘Rubi, Rubi ‘Rubi ‘Rubi’ Lima Verde Folha Murcha ‘Sanguinea, Sanguinea ‘Sanguinea ‘Sanguinea’ ‘Salustiana, Salustiana ‘Salustiana ‘Salustiana’ ‘Midknight Midknight ‘Jaffa Jaffa fruits May 23064 306 4 2,306. 26194 619 2,619. sprouting years defined late (ADD 20 2306 30 2,306 2619 61 2,619 230 3 2,30 261 6 2,61 23 2,3 26 2,6 2,

https://doi.org/10.1590/0100-29452024033

Germination and development of passion fruit seedlings under saline and water stresses
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Tártari, Graziela Goulart

; Schwarz, Sergio Francisco

; Strassburger, André Samuel

; Petry, Henrique Belmonte

; Schneider, Leonardo André

; Ebeling, Luis Henrique dos Santos

Pesquisa Agropecuária Brasileira

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2024, Volume 59 elocation e03278

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O objetivo deste trabalho foi avaliar os efeitos do estresse salino e hídrico na germinação das sementes, e do estresse salino no desenvolvimento de mudas de Passiflora edulis 'SCS437 Catarina'. As sementes foram germinadas em papel umedecido com soluções de NaCl e de PEG 6.000, nos potenciais osmóticos de 0,00, −0,25, −0,50, −0,75, −1,00 e −2,00 MPa. As mudas produzidas foram expostas apenas ao NaCl. As sementes apresentam tolerância ao estresse salino até o potencial osmótico de −0.75 MPa, enquanto as mudas demonstram tolerância até o potencial osmótico de −0.50 MPa (10.96 mS cm−1). SCS437 SCS 'SCS43 Catarina. Catarina . Catarina' 6000 6 000 6.000 0 00 0,00 025 25 −0,25 050 50 −0,50 075 75 −0,75 100 1 −1,0 200 2 −2,0 −0.7 −0.5 10.96 1096 10 96 (10.9 cm−1. cm1 cm cm−1 cm−1) SCS43 'SCS4 600 6.00 0,0 02 −0,2 05 5 −0,5 07 7 −0,7 −1, 20 −2, −0. 10.9 109 9 (10. cm− SCS4 'SCS 60 6.0 0, −0, −1 −2 −0 10. (10 6. − (1 (

Abstract The objective of this work was to evaluate the effects of saline and water stresses on the germination of seeds and of saline stress on the development of seedlings of 'SCS437 Catarina' Passiflora edulis. The seeds were germinated on paper moistened with NaCl and PEG 6,000 solutions, at the osmotic potentials of 0.00, −0.25, −0.50, −0.75, −1.00, and −2.00 MPa. The produced seedlings were exposed only to NaCl. The seeds show tolerance to saline stress up to an osmotic potential of −0.75 MPa, while the seedlings present tolerance up to an osmotic potential of −0.50 MPa (10.96 mS cm−1). SCS437 SCS 'SCS43 Catarina edulis 6000 6 000 6,00 solutions 0 00 0.00 025 25 −0.25 050 50 075 75 100 1 −1.00 200 2 −2.0 −0.7 −0.5 10.96 1096 10 96 (10.9 cm−1. cm1 cm cm−1 . cm−1) SCS43 'SCS4 600 6,0 0.0 02 −0.2 05 5 07 7 −1.0 20 −2. −0. 10.9 109 9 (10. cm− SCS4 'SCS 60 6, 0. −1. −2 −0 10. (10 −1 − (1 (

https://doi.org/10.1590/s1678-3921.pab2024.v59.03278

Formation pruning intensities and container volumes in the production of advanced sour passion fruit seedlings
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Fabro, Fabio Feltrin

; Petry, Henrique Belmonte

; Marchesi, Darlan Rodrigo

; Schwarz, Sergio Francisco

; Schneider, Leonardo André

Revista Brasileira de Fruticultura

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2024, Volume 46 elocation e-560

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: O objetivo deste trabalho foi avaliar a produção de mudas avançadas de maracujazeiro-azedo (Passiflora edulisSims.), sob intensidades de poda, em diferentes volumes de recipientes. Realizou-se o experimento em viveiro de produção, em Pedras Grandes - SC. O delineamento experimental foi em blocos ao acaso, e os tratamentos arranjados em esquema fatorial, 5 intensidades de poda (controle e podas a partir da emissão de 2; 4; 6 e 8 folhas definidas) x 3 volumes de recipiente (1,0; 1,7 e 3,6 litros), com três repetições e seis plantas por parcela. Avaliaram-se a altura e o número de folhas (NF) das mudas ao longo do experimento e, ao final, o percentual de plantas com o sistema radicular enovelado (PSRE), volume de raízes (VR), massa seca de raízes (MSR), parte aérea (MSPA) e total (MST). O tratamento controle (sem poda) apresentou maior altura, NF, MSPA e MST, independentemente do volume de recipiente. A produção de mudas avançadas de maracujazeiro-azedo, sob intensidades de poda, reduz aaltura, NF,MSPA e MST. As mudas formadas em recipiente de maior volume proporcionam maior altura,NF, VR, MSR, MSPA e MST, além do menor PSRE. Assim, recomenda-se a poda naintensidade de 6 folhas em recipiente de 1,7 litros. Resumo maracujazeiroazedo maracujazeiro azedo Passiflora edulisSims., edulisSims edulisSims. , edulisSims.) recipientes Realizouse Realizou se SC acaso fatorial 2 4 definidas 1,0 10 1 0 (1,0 17 7 1, 36 3, litros, litros litros) parcela Avaliaramse Avaliaram NF (NF final PSRE, PSRE (PSRE) VR (VR) MSR (MSR) (MSPA MST . (MST) sem maracujazeiroazedo, azedo, aaltura NFMSPA alturaNF altura,NF Assim recomendase recomenda (1, (PSRE (VR (MSR (MST (1 (

Abstract: The objective of this work was to evaluate the production of advanced seedlings of sour passion fruit (Passiflora edulis Sims.) in pruning intensities at different volumes of containers. The experiment was carried out in a production nursery, in Pedras Grandes, Santa Catarina state. The experimental design was a randomized block design and the treatments were arranged in a factorial scheme of five pruning intensities (control and pruning from the emission of 2, 4, 6, and 8 defined leaves) x 3 container volumes (1.0; 1.7 and 3.6 liters), with three replications and six plants per plot. The height and number of leaves (NF) of the seedlings were evaluated throughout the experiment and, at the end, the percentage of plants with a twisted root system (PSRE), root volume (VR), root dry mass (MSR), aerial part (MSPA) and total were measured (MST). The control treatment (without pruning) showed greater height, NF, MSPA and MST, regardless of container volume. The production of advanced sour passion fruit seedlings under pruning intensities reduced height, NF, MSPA and MST. Seedlings formed in larger volume containers provided greater height, NF, VR, MSR, MSPA and MST, in addition to the lowest PSRE. Therefore, pruning at an intensity of 6 leaves in a 1.7 liter container is recommended. Abstract Passiflora Sims. Sims nursery Grandes state 2 4 1.0 10 1 0 (1.0 17 7 1. 36 3. liters, liters , liters) plot NF (NF end PSRE, PSRE (PSRE) VR (VR) MSR (MSR) (MSPA MST . (MST) without Therefore recommended (1. (PSRE (VR (MSR (MST (1 (

https://doi.org/10.1590/0100-29452024560

Chromosome diversity in Buthidae and Chactidae scorpions from Brazilian fauna: Diploid number and distribution of repetitive DNA sequences fauna
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Lima, Juliana Figueiredo

; Carvalho, Leonardo Sousa

; Carvalho, Marcos André

; Schneider, Marielle Cristina

Genetics and Molecular Biology

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jan 2023, Volume 46 N. 2 elocation e20220083

Abstract: En | Text: En | PDF: En

Abstract In this work, we analyzed cytogenetically eight Chactidae and Buthidae, including the localization of repetitive DNA sequences. The chactids possess monocentric chromosomes and the highest diploid numbers (2n=50 in Brotheas amazonicus, 2n=36 in Chactopsis amazonica, 2n=30 in Neochactas sp.) when compared with buthids (2n=10 in Tityus bahiensis, 2n=14 in Tityus apiacas and Tityus metuendus, 2n=18 in Tityus aba, 2n=26 in Ischnotelson peruassu). The localization of rDNA genes and (TTAGG)n sequences exhibited a conserved pattern of two terminal/subterminal ribosomal cistrons and terminal telomere signals. However, the comparison between the data of C-banding, DAPI after FISH and Cot-DNA fraction indicated a variable quantity and distribution of these regions, as follow: (i) positive heterochromatin and Cot-DNA signals (B. amazonicus and I. peruassu), (ii) small blocks of heterochromatin with large Cot-DNA signals (T. metuendus), (iii) positive heterochromatic regions and absence of Cot-DNA signals (T. aba and T. apiacas), and (iv) negative heterochromatin and Cot-DNA signals (T. bahiensis). Therefore, our results revealed that there still is not a clear relation between quantity of heterochromatin and presence of monocentric or holocentric chromosomes and occurrence of chromosomal rearrangements, indicating that repetitive regions in scorpions must be analyzed using different cytogenetic approaches. work Buthidae 2n=50 2n50 n 2n 50 (2n=5 2n36 36 2n=3 amazonica 2n30 30 sp. sp 2n=10 2n10 10 (2n=1 bahiensis 2n14 14 2n=1 metuendus 2n18 18 2n26 26 2n=2 peruassu. peruassu . peruassu) TTAGGn TTAGG terminalsubterminal subterminal However Cbanding, Cbanding C banding, banding C-banding CotDNA Cot follow i (i B. B (B I peruassu, , ii (ii T (T metuendus) iii (iii apiacas, apiacas) iv (iv bahiensis. bahiensis) Therefore rearrangements approaches 2n=5 2n5 5 (2n= 2n3 3 2n= 2n1 1 2n2 2 (2n

https://doi.org/10.1590/1678-4685-gmb-2022-0083

Successive applications of gibberellic acid to reduce flowering of 'Montenegrina' mandarin in alternate bearing
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Griebeler, Sabrina Raquel

; Gonzatto, Mateus Pereira

; Böettcher, Gerson Nestor

; Schneider, Leonardo André

; Sulzbach, Manuela

; Gargioni, Eduarda Dorigatti

; Schwarz, Sergio Francisco

Pesquisa Agropecuária Brasileira

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2021, Volume 56 elocation e02303

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo: O objetivo deste trabalho foi avaliar o número de aplicações sucessivas de ácido giberélico (GA3), no período de outono-inverno, quanto a seu efeito na redução do florescimento, na primavera subsequente após períodos de baixa carga de frutos (ano “off”), em tangerineiras 'Montenegrina' (Citrus deliciosa). As aplicações sequenciais a 40 mg L-1 de GA3 foram testadas de uma a quatro vezes, com intervalos de 21 dias, com início no final de maio. O experimento foi realizado em delineamento de blocos ao acaso, com quatro tratamentos e controle, quatro repetições e uma planta por unidade experimental. Floração, brotação, tipos de brotos, frutificação e diâmetro dos frutos foram avaliados. A frutificação diminui exponencialmente com o aumento da intensidade de floração. O uso de GA3 em duas, três ou quatro aplicações sequenciais, de maio a junho, maio a julho e maio a agosto, reduz a intensidade de floração e brotação em plantas com produção alternada na primavera subsequente, o que aumenta os brotos mistos e reduz os brotos florais. O uso de quatro aplicações sequenciais de 40 mg L-1 de GA3 promove grande incremento na frequência de brotos campaneiros e favorece o aumento da fixação e do tamanho dos frutos.

Abstract: The objective of this work was to evaluate the number of successive applications of gibberellic acid (GA3), during the autumn-winter period, for its effect on the reduction of flowering, in the subsequent spring after periods of low fruit load (off-year), in 'Montenegrina' mandarin trees (Citrus deliciosa). Sequential applications at 40 mg L-1 GA3 were tested from one to four times, at 21-day intervals, beginning in the end of May. The experiment was carried out in a randomized complete block design, with four treatments and a control, four replicates, and one plant per experimental unit. Flowering, sprouting, types of shoots, fruit set, and fruit diameter were evaluated. The fruit set increases exponentially with the reduction of flowering intensity. The use of GA3 in two, three, or four sequential applications, from May to June, May to July, and from May to August, at 21-day intervals, reduces the intensity of flowering and sprouting of alternate bearing plants in the subsequent spring, increasing mixed shoots and reducing floral shoots. The use of four sequential applications of 40 mg L-1 GA3 promotes a great increase in the frequency of single flower terminal leafy shoots and favors the increase of fruit fixation and size.

https://doi.org/10.1590/s1678-3921.pab2021.v56.02303 69 downloads

TLR4 and TLR8 variability in Amazonian and West Indian manatee species from Brazil
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Oliveira, Tatiana Maia de

; Burlamaqui, Tibério Cesar Tortola

; Sá, André Luiz Alves de

; Breaux, Breanna

; Luna, Fábia de Oliveira

; Attademo, Fernanda Löffler Niemeyer

; Klautau, Alex Garcia Cavalleiro de Macedo

; Oliveira, Jairo Moura

; Sena, Leonardo

; Criscitiello, Michael F.

; Schneider, Maria Paula Cruz

Genetics and Molecular Biology

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2021, Volume 44 N. 2 elocation e20190252

Abstract: En | Text: En | PDF: En

Abstract Amazonian (Trichechus inunguis) and West Indian (Trichechus manatus) manatees are aquatic mammals vulnerable to extinction found in the Amazon basin and the coastal western Atlantic. Toll-like receptors (TLR) play a key role in recognizing pathogen-associated molecular patterns using leucine-rich repeats (LRRs). We described the diversity of TLR4 and TLR8 genes in these two species of manatee. Amazonian manatee showed seven SNPs in TLR4 and the eight in TLR8, while West Indian manatee shared four and six of those SNPs, respectively. In our analysis, TLR4 showed one non-conservative amino acid replacement substitution in LRR7 and LRR8, on the other hand, TLR8 was less variable and showed only conserved amino acid substitutions. Selection analysis showed that only one TLR4 site was subjected to positive selection and none in TLR8. TLR4 in manatees did not show any evidence of convergent evolution compared to species of the cetacean lineage. Differences in TLR4 and TLR8 polymorphism may be related to distinct selection by pathogens, population reduction of West Indian manatees, or an expected consequence of population expansion in Amazonian manatees. Future studies combining pathogen association and TLR polymorphism may clarify possible roles of these genes and be used for conservation purposes of manatee species.

https://doi.org/10.1590/1678-4685-gmb-2019-0252 448 downloads

Homemade laparoscopic simulator
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Travassos, Thiago da Costa

; Schneider-Monteiro, Edison Daniel

; Santos, André Meirelles dos

; Reis, Leonardo Oliveira

Acta Cirúrgica Brasileira

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oct 2019, Volume 34 N. 10 elocation e201901006

Abstract: En | Text: En | PDF: En

Abstract Purpose: To describe a guide for the construction of a laparoscopic training simulator. Methods: Step-by-step description of an inexpensive and easy to assemble homemade laparoscopic training box, capable of simulating the laparoscopic environment in its peculiarities to enable technical skills training. Results: The total cost of the materials for the construction of the simulator was US$ 75.00 (about R$ 250.00 “reais”) and it can be reduced to US$ 60.00 if the builder judges that there is no need for internal lighting. The use of real trocars imposes the same challenges as real surgeries regarding positioning, visibility and limitation of movements. Conclusion: The proposed economical and efficient alternative can contribute to the teaching and practice of laparoscopic surgical technique worldwide, benefiting surgeons and patients.

https://doi.org/10.1590/s0102-865020190100000006 1047 downloads

3,5,6-trichloro-2-pyridinyloxyacetic acid as effective thinning agent for fruit of 'Montenegrina' mandarin
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Gonzatto, Mateus Pereira

; Böettcher, Gerson Nestor

; Schneider, Leonardo André

; Lopes, Ângelo Azeredo

; Silveira Júnior, Jairo Camargo

; Petry, Henrique Belmonte

; Oliveira, Roberto Pedroso de

; Schwarz, Sergio Francisco

Ciência Rural

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dec 2016, Volume 46 N. 12 Pages 2078 - 2083

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: A tangerineira 'Montenegrina' ( Citrus deliciosa Tenore) é amplamente cultivada no sul do Brasil. Possui grande tendência à alternância de produção, necessitando de raleio de frutos. Contudo, os raleantes químicos estudados até hoje nesta cultivar não se demonstraram eficientes. Este trabalho teve como objetivo avaliar o efeito do ácido 3,5,6-tricloro-2-piridiniloxiacético (3,5,6-TPA) sobre a produção e qualidade de frutos da tangerineira 'Montenegrina', em relação às opções de raleio químico previamente estudadas. Foram utilizados, como padrão, raleio manual e plantas sem raleio (controle). Realizaram-se aplicações de ethephon em três doses: 200mg L-1, 300mg L-1 e 200mg L-1 + 3% de ureia; e aplicações de 3,5,6-TPA, em quatro doses: 10, 20, 30 e 40mg L-1. Os frutos de árvores raleadas manualmente e de tratadas com 3,5,6-TPA a 40mg L-1 apresentaram maior tamanho médio, melhor distribuição de calibres comerciais e cores mais alaranjadas. Nenhum tratamento reduziu a alternância de produção. Aplicações de 40mg L-1 de 3,5,6-TPA como raleante químico, durante a queda fisiológica de frutos jovens, propiciaram efeito similar ao raleio manual sobre a produção e qualidade dos frutos de tangerineira 'Montenegrina'.

ABSTRACT: The 'Montenegrina' mandarin ( Citrus deliciosa Tenore) is widely cultivated in southern Brazil. This cultivar has a great tendency for alternate bearing, requiring thining of the fruit. However, the chemical thinners studied until now in this cultivar have not been successful. The objective of this research was to evaluate the effect of 3,5,6-trichloro-2-pyridinyloxyacetic acid (3,5,6-TPA) on the production and fruit quality of the 'Montenegrina' mandarin, in comparison with hand thinning and the options of chemical thinning previously studied. Hand thinning and no thinning were used as controls. Ethephon was applied in three doses: 200mg L-1, 300mg L-1 or 200mg L-1 + 3% urea; or 3,5,6-TPA, in four doses: 10, 20, 30 or 40mg L-1. Fruits of the hand thinned trees and those treated with 40mg L-1 showed greater average size, greater distribution of commercial caliber and more orange colors. No treatment reduced alternate bearing. Applications of 40mg L-1 of 3,5,6-TPA as a chemical thinner, during the physiological drop of young fruit, had a similar effect that of hand thinning over yield and quality of fruits of 'Montenegrina' mandarin.

https://doi.org/10.1590/0103-8478cr20140057 2115 downloads

Avaliação física e química e aceitação pelo consumidor de laranjas 'Valência', produzidas sob sistemas de cultivo orgânico e convencional
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Petry, Henrique Belmonte

; Schneider, Leonardo André

; Silveira Júnior, Jairo Camargo

; Crizel, Tainara de Moraes

; Flôres, Simone Hickmann

; Schwarz, Sergio Francisco

Ciência Rural

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apr 2015, Volume 45 N. 4 Pages 619 - 625

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo foi verificar a influência do sistema de cultivo, orgânico e convencional, sobre as características físicas e químicas e sobre a aceitação pelo consumidor de laranjas 'Valência' (Citrus sinensis (L.) Osb.). Os pomares foram instalados no município de Montenegro, em julho de 2001, em espaçamento de 2,5mx5,0m, cada um possuindo uma área de 0,25ha. As avaliações foram realizadas a partir de amostras de frutos colhidas em setembro e outubro de 2011 e em outubro de 2012. Os parâmetros físicos e químicos analisados nos frutos foram: teor de suco (TS), teor de sólidos solúveis (SS), acidez titulável (AT), relação SS/AT e índice de cor da casca.A avaliação da aceitação das laranjas foi realizada com avaliadores não treinados, e utilizando escala hedônica de nove pontos, que expressam o grau de gostar ou desgostar do produto. O delineamento experimental foi completamente casualizado. Os frutos apresentaram parâmetros de qualidade adequados aos padrões internacionais e não diferiram entre si quanto as suas características físicas e químicas na maioria dos atributos avaliados. A aceitação foi satisfatória em todos os atributos avaliados (todos superiores a 70%). As diferenças observadas nos atributos físicos e químicos não foram percebidas pelos avaliadores, não havendo, portanto, distinção na aceitação dos frutos pelo consumidor entre os sistemas de cultivo

The objective of the research was to investigate the influence of cultivating systems (organic and conventional) on physical and chemical attributes, and consumer acceptance of 'Valencia' oranges (Citrus sinensis (L.) Osb.). The orchards were field planted in Montenegro, Brazil, in July 2001. Plants are spaced 2.5m in the row by 5.0m between rows, totaling 0.25ha each orchard. Evaluations were made using fruit samples collected in September and October of 2011, and October of 2012. The physical and chemical attributes evaluated were: juice contents (TS), soluble solids (SS), titratable acidity (AT), ratio SS/AT and color index in the peel (ICC). The oranges' consumer acceptance was determined by untrained evaluators using a nine-point hedonic scale, where the degree in which they'like' or 'dislike' the product is expressed. The experimental design was completely randomized. As results, oranges showed parameters of quality accordingly to international standards. The physical and chemical attributes were not different between conventional and organic systems for most attributes evaluated. Consumer acceptance was satisfactory in all attributes evaluated (all above 70%). The differences observed on the physical and chemical attributes were not perceived by the evaluators; therefore, there is no distinction on the acceptability of the fruits by consumers despite of the cultivation system

https://doi.org/10.1590/0103-8478cr20131546 2549 downloads

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Growing knowledge: an overview of Seed Plant diversity in Brazil
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2015, Volume 66 N. 4 Pages 1085 - 1113

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Um levantamento atualizado das plantas com sementes e análises relevantes acerca desta biodiversidade são apresentados. Este trabalho se iniciou em 2010 com a publicação do Catálogo de Plantas e Fungos e, desde então vem sendo atualizado por mais de 430 especialistas trabalhando online. O Brasil abriga atualmente 32.086 espécies nativas de Angiospermas e 23 espécies nativas de Gimnospermas e estes novos dados mostram um aumento de 3% da riqueza em relação a 2010. A Amazônia é o Domínio Fitogeográfico com o maior número de espécies de Gimnospermas, enquanto que a Floresta Atlântica possui a maior riqueza de Angiospermas. Houve um crescimento considerável no número de espécies e nas taxas de endemismo para a maioria dos Domínios (Caatinga, Cerrado, Floresta Atlântica, Pampa e Pantanal), com exceção da Amazônia que apresentou uma diminuição de 2,5% de endemicidade. Entretanto, a maior parte das plantas com sementes que ocorrem no Brasil (57,4%) é endêmica deste território. A proporção de formas de vida varia de acordo com os diferentes Domínios: árvores são mais expressivas na Amazônia e Floresta Atlântica do que nos outros biomas, ervas são dominantes no Pampa e as lianas apresentam riqueza expressiva na Amazônia, Floresta Atlântica e Pantanal. Este trabalho não só quantifica a biodiversidade brasileira, mas também indica as lacunas de conhecimento e o desafio a ser enfrentado para a conservação desta flora.

Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora.

https://doi.org/10.1590/2175-7860201566411 33340 downloads

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