scholarly journals Gibberellic acid and water regime in the flowering induction of Brassocattleya and Cattleya hybrid orchids

2010 ◽  
Vol 28 (4) ◽  
pp. 395-398 ◽  
Author(s):  
Jean C Cardoso ◽  
Elizabeth O Ono ◽  
João D Rodrigues

The influence of gibberellic acid (GA3) and water regime was evaluated in the flowering induction and quality of two orchid hybrids belonging to the genera Cattleya (C.) and Brassocattleya (Bc.). The experiment was carried out in the Biotechnology and Orchid Culture Sector of Shunji Nishimura Technology Foundation, Pompéia, São Paulo State, Brazil. Five GA3 concentrations (0, 125, 250, 500 and 1,000 mg L-1) were tested through four consecutive leaf applications in adult plants that had already flowered at least once, besides two water conditions (one and four irrigations per week). Applications were performed in October and November for Bc. Marcella Koss and in January and February for C. Irene Holguin. Flowering could not be induced in the latter by gibberellic acid. In Bc. Marcella Koss, the application of 250 mg L-1 GA3 combined with decreased irrigation frequency induced flowering in around 83% plants. By using the same GA3 concentration but frequent irrigation, only 17% plants were induced to flower. The number and size of flowers increased after application of higher GA3 concentrations. This work allowed developing a commercial technique with the use of gibberellic acid (GA3) to induce flowering in Bc. Marcella Koss hybrid orchid.

2018 ◽  
Vol 40 (4) ◽  
Author(s):  
Jéssika Angelotti-Mendonça ◽  
Mara Fernandes Moura ◽  
João Alexio Scarpare Filho ◽  
Bruna Thaís Ferracioli Vedoato ◽  
Marco Antonio Tecchio

Abtract In Brazil, the producers have changed used rootstocks to get more vigor to scion. Rootstocks change the distribution of bud fruitfulness over grapevine shoots and the expression of the bud fruitfulness into fruit yield. Hence, these modification could alter ideal pruning length. In this way, it was evaluated bud fruitfulness, fruit yield and quality of ‘Niagara Rosada’ grapevine grafted onto rootstocks: ‘IAC 766’, ‘IAC 572’, ‘IAC 313’, ‘IAC 571-6’, and ‘Riparia do Traviu’, which ‘IAC 766’ is the most used rootstock in São Paulo State, nowadays. The evaluations were performed over three crop seasons, in a vineyard located in Louveira, SP. Two evaluations were performed in Brazilian traditional season, and one crop pruning was performed in Brazilian summer, called “off-season”. In traditional seasons, the bud fruitfulness was evaluated from the first to fourth bud in 2014 and to the fifth in 2015. In the off-season, bud fruitfulness was evaluated from the fifth to eighth bud. Fruit yield and quality were also evaluated over the three production cycles. Bud fruitfulness of ‘Niagara Rosada’ grafted onto the evaluated rootstocks showed that this characteristic was more affected by the environmental conditions, confirmed due to alteration of bud fruitfulness through production cycles. Additionally, no effect of rootstock was observed on fruit yield, and quality of ‘Niagara Rosada’. Only isolated variations were detected, and these are not enough to confirm the influence of rootstocks on scion of ‘Niagara Rosada’. Although no effect of rootstocks on bud fruitfulness, fruit yield and quality has been observed in the evaluated conditions, all rootstocks are recommended to be used in combination with ‘Niagara Rosada’.


2021 ◽  
Vol 37 (6) ◽  
Author(s):  
Rafaelle Cristina Cruz da Silva Queiroz ◽  
Rejane Christine de Sousa Queiroz ◽  
Thiago Augusto Hernandes Rocha ◽  
Francelena de Sousa Silva ◽  
Izani Gonçalves dos Santos ◽  
...  

We analyzed the spatial relation between incomplete vaccine coverage for children and the distance from vaccination services. This was a cross-sectional study of children from 13 to 35 months of age from the cities of São Luís (Maranhão State) and Ribeirão Preto (São Paulo State), Brazil, and from basic health units (UBS, in Portuguese). The sample consisted of 2,744 children from São Luís and 3,325 from Ribeirão Preto. Data about incomplete vaccine coverage for children were obtained from the BRISA birth cohorts. Data about the quality of UBS vaccination services were obtained from the first cycle of the Brazilian National Program for Improvement of Access and Quality of Basic Care (PMAQ-AB, in Portuguese). For the spatial analysis, we determined the distance between the residence of the children (with and without a complete vaccine calendar) and the vaccination services of the UBS (classified according to number of structural items). Incomplete vaccine coverage was more pronounced in São Luís, with greater percentages for human rotavirus and triple viral vaccines, with the latter being the least available. In Ribeirão Preto, incomplete BCG vaccine coverage was more pronounced, with the tetravalent vaccine being the least available. Children from the two cities showed similarities: most of them had adult mothers with 9 to 11 years of schooling and did not reside with siblings in the household. They also showed differences: in São Luís, most mothers belonged to the economic class C, while in Ribeirão Preto they belong to the A and B classes. In the two cities with different socioeconomic conditions, complete vaccine coverage seemed not to depend on the location or quality of the vaccination service. Although São Luís showed a better structure of the services, incomplete vaccine coverage was higher compared to Ribeirão Preto.


2017 ◽  
Vol 44 (1) ◽  
pp. 109 ◽  
Author(s):  
Reinaldo Romero VARGAS ◽  
João José Samarão GONÇALVES ◽  
Fabrício Bau DALMAS ◽  
Antonio Roberto SAAD ◽  
Regina De Oliveira Moraes ARRUDA ◽  
...  

A contribuição do município de Guarulhos (Estado de São Paulo) para a qualidade de água do Sistema Alto Tietê. Guarulhos (SP) tem apresentado índices de crescimento populacional acima da média da Região Metropolitana de São Paulo (RMSP). A Bacia Hidrográfica do Rio Baquirivu Guaçu (BHRBG), onde se localiza o Rio Baquirivu Guaçu, é o vetor de expansão urbana do município e da região. Este trabalho apresenta uma análise da qualidade das águas do Rio Baquirivu-Guaçu na entrada e na saída do município de Guarulhos, avaliando os efeitos da implantação das ETEs e do uso da terra sobre a qualidade das águas do Rio Baquirivu-Guaçu, entre os anos de 2010 e 2014. Para isto foram elaborados os mapas de uso de terra no período analisado, uma análise do funcionamento das ETEs na área de estudo, e a análise estatística dos Índices de Qualidade de Águas (IQA) e de seus parâmetros nos diferentes pontos do rio. Os dados referentes às análises físico-química e microbiológica do Rio Baquirivu-Guaçu indicam uma qualidade de água na saída do município de Guarulhos (IQA=16), muito inferior àquela que recebe do município de Arujá (IQA=32). Os valores médios, em especial para os parâmetros DBO, OD, TU, ST e CF indicam uma piora na qualidade das águas do Rio Baquirivu-Guaçu no ponto BQGU03850. Os valores dos parâmetros NT, PT e pH foram muito próximos para ambos os pontos da entrada e saída da bacia. A análise entre a evolução do uso da terra e a qualidade da água demonstra as consequências do processo inadequado de crescimento urbano na bacia e que as fontes poluidoras domésticas e industriais representam considerável risco à qualidade das águas, demonstrando que as obras de saneamento realizadas até o momento não foram eficazes na redução de cargas poluidoras das águas do rio Baquirivu-Guaçu.


Author(s):  
Margarete Mallasen ◽  
Helenice Pereira de Barros ◽  
Daniela Polizeli Traficante ◽  
André Luiz Scarano Camargo

2020 ◽  
Vol 26 (4) ◽  
pp. 647-657
Author(s):  
Patrick Luan Ferreira dos Santos ◽  
Matheus Vinícios Leal do Nascimento ◽  
João Victor Costa ◽  
Roberto Lyra Villas Bôas

Abstract With the increasing popularization of football (soccer), new technologies have arrived in Brazil that assist in the maintenance of sports fields, making it possible to increase the quality of turfgrass in both professional and amateur fields. Thus, the revitalization process has become fundamental in sports fields installed with emerald grass to improve game performance and turfgrass development. The objective of this study was to revitalize an amateur sports field in the interior of São Paulo state, Brazil, planted with emerald grass. The conditions of the field were initially assessed and a set of revitalization procedures were carried out from November 2019 to March 2020 to improve turfgrass quality, including: chemical analysis of the soil and liming; mowing of the grass and disposal of clippings; soil decompaction through aeration with solid tines; application of sand (top dressing); pest and weed control; planting of new sod; fertilization and maintenance. Technical training with employees was also conducted for subsequent field maintenance. All tested operations were essential and necessary to improve the aesthetics and quality of the amateur sports field, so that the turfgrass could be revitalized and ready for use in soccer matches.


1986 ◽  
Vol 18 (10) ◽  
pp. 61-72 ◽  
Author(s):  
P. S. Sanchez ◽  
E. G. Agudo ◽  
F. G. Castro ◽  
M. N. Alves ◽  
M. T. Martins

In order to evaluate the sanitary quality of marine recreational waters and sand at some beaches of São Paulo State, Brazil, a 19-month study (1984-1985) was undertaken at nine sampling stations, and a total of 342 samples of sea water and sand were analysed for total and faecal coliforms, faecal streptococci, Pseudomonas aeruginosa and Salmonella. In sand samples Candida albicans, dermatophytes, Pitryrosporum, helminth eggs and protozoan cysts were also researched. Sea water samples were also analysed for enteroviruses and, in the second part of this study, for enterococci also. The results have shown some areas with high levels of faecal contamination in sea water and sand. The Brazilian recommended faecal coliform limit was exceeded in 31% of the sea water samples. Out of 171 sea water samples analysed, 10.5% were positive for Salmonella and 3.5% for enteroviruses. Positive results for C. albicans were observed in 18.7% of the sand samples and helminth eggs were detected in 12.9% of these 171 samples; Pityrosporum, dermatophytes and protozoan cysts were not detected.


2020 ◽  
Vol 19 (3) ◽  
pp. 229-235
Author(s):  
Alexandre Lorini ◽  
Claudineli Cassia Bueno da Rosa ◽  
Livia Teixeira Oliveira ◽  
Carmen Wobeto

Besides honey and propolis, bee products already well consolidated, pollen also has relevant economic, nutritional and functional value. As the quality of the final product is directly related to the region where it is collected and processed, this work has evaluated the nutritional and microbiological quality of two dehydrated bee pollens from São Paulo state and the other produced by beekeepers from northern of Mato Grosso state, but with no inspection. Physical-chemical and microbiological quality, phenolic composition and mineral profile analysis were performed. It was observed that both pollens presented satisfactory quality regarding protein contents (24.8 ± 2.4 g 100 g-1), total sugars (36.2 ± 1.1 g 100 g-1), lipids (4.0 ± 0.3 g 100 g-1), ashes (2.6 ± 0.05 g 100 g-1), free acidity (238.7 ± 4.5 mEq Kg-1) and pH (4.8 ± 0.03), however regarding the humidity levels (6.6 ± 2.2 g 100 g-1) both samples were not in accordance with recommended by law (4 g 100 g-1). The bioactive profile has shown a significant amount of phenolic compounds (37.3 ± 1.1 mg GAE g-1) and flavonoids (41.8 ± 2.5 mg QE g-1), besides potential antioxidants around, approximately, 50 and 80%. Microbiological analyzes have revealed low bacterial contamination (≤ 3.6 MPN g-1), molds and yeasts (variation between 1.2x103 and 4x101 CFU g-1), according to values stipulated by the current legislation, being observed the absence of Salmonella sp. and Escherichia coli. The bee pollens investigated have nutritional quality and safety for consumption. However, pollen from São Paulo state showed greater antioxidant potential, probably due to its higher content of phenolics when compared with pollen from Mato Grosso state.


2014 ◽  
Vol 89 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Patrick Alexander Wachholz ◽  
Paula Yoshiko Masuda ◽  
Dejair Caitano Nascimento ◽  
Cecilia Midori Higashi Taira ◽  
Norma Gondim Cleto

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