scholarly journals Adubação nitrogenada e potássica do Aster ericoides cultivado em ambiente protegido

2008 ◽  
Vol 26 (2) ◽  
pp. 190-193 ◽  
Author(s):  
Mônica Sartori de Camargo ◽  
Simone da Costa Mello ◽  
Quirino Augusto de Camargo Carmello
Keyword(s):  
Aster Ericoides

O Aster ericoides é uma flor de corte recentemente introduzida no Brasil com grande potencial de produção e aceitação pelo mercado consumidor, mas são escassas as informações sobre o manejo da adubação, prática fundamental para desenvolvimento e qualidade da planta. O objetivo deste trabalho foi avaliar adubações nitrogenadas e potássicas na produção e absorção de nutrientes pelo Aster ericoides (White Master) cultivado em Latossolo Amarelo eutrófico em condições de estufa. O experimento foi instalado em delineamento de blocos completos em esquema fatorial (4x4) com 4 doses de N (0; 50; 75 e 100 kg ha-1 N), 4 doses de K (0; 52; 78; 104 kg ha-1 K2O) e 4 repetições no segundo ciclo da planta. A população foi de 400 mil plantas por hectare. Após 105 dias, foram colhidas dez hastes de cada parcela. A produção de matéria seca de hastes e folhas, número de flores por haste, número de ramificações laterais por haste não foram influenciadas pelos tratamentos. A dose de 46 kg ha-1 de N proporcionou máxima produção de matéria seca de flores (19,40 g planta-1) e a adubação com potássio não influenciou as características avaliadas. Estes resultados mostraram que é preciso ser cauteloso com as altas adubações de N e K no solo estudado para não reduzir a produção de matéria seca de flores. Mais estudos sobre a fertilização nitrogenada e potássica devem ser realizados para definir a recomendação de doses adequadas para o cultivo de Aster ericoides em condições tropicais.

Development of Mucoadhesive Buccal Drug Delivery System of Propranolol Hydrochloride Using Aster ericoides Mucilage

2020 ◽  
Vol 10 (2) ◽  
pp. 133-148
Author(s):  
Ankaj Kaundal ◽  
Pravin Kumar ◽  
Rajendra Awasthi ◽  
Giriraj T. Kulkarni
Keyword(s):  
Buccal Cavity ◽  
Three Dimensional ◽  
Hot Water ◽  
Fickian Diffusion ◽  
Aster Ericoides ◽  
Dimensional Network ◽  
Buccal Tablet ◽  
Significant Difference ◽  
Volunteer Group

Aim: The study was aimed to develop mucoadhesive buccal tablets using Aster ericoides leaves mucilage. Background : Mucilages are naturally occurring high-molecular-weight polyuronides, which have been extensively studied for their application in different pharmaceutical dosage forms. Objective: The objective of the present research was to establish the mucilage isolated from the leaves of Aster ericoides as an excipient for the formulation of the mucoadhesive buccal tablet. Method: The mucilage was isolated from the leaves of Aster ericoides by maceration, precipitated with acetone and characterized. Tablets were prepared using wet granulation technique and evaluated for various official tests. Results: The mucilage was found to be non-toxic on A-431 and Vero cell lines. It was insoluble but swellable in cold and hot water. The results indicate that mucilage can form a three-dimensional network. The pH of the mucilage (6.82 ± 0.13) indicated that it might be non-irritant to the buccal cavity. The mucilage was found to be free from microbes. The release of drug was by Fickian diffusion. The in vivo buccal tablet acceptance was 80%. No significant difference between the diastolic blood pressure of standard and Aster tablets treated volunteer group was recorded. Conclusion: The mucilage was found to be non-toxic on A-431 and Vero cell lines. It was insoluble but swellable in cold and hot water. The results indicate that mucilage can form a three-dimensional network. The pH of the mucilage (6.82 ± 0.13) indicated that it might be non-irritant to the buccal cavity. The mucilage was found to be free from microbes. The release of drug was by Fickian diffusion. The in vivo buccal tablet acceptance was 80%. No significant difference between the diastolic blood pressure of standard and Aster tablets treated volunteer group was recorded. Other: However, to prove the potency of the polymer, in vivo bioavailability studies in human volunteers are needed along with chronic toxicity studies in suitable animal models.

Aster ericoides

2012 ◽  
pp. 103-103
Author(s):  
Shakhnoza S. Azimova ◽  
Anna I. Glushenkova
Keyword(s):  
Aster Ericoides

scholarly journals PERENNIAL GARDEN ASTER PRODUCTION IN NORTHWEST ARKANSAS

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 271C-271
Author(s):  
Lynn Goff ◽  
Alfred Einert ◽  
Gerald Klineaman
Keyword(s):  
Slow Release ◽  
Cultural Practices ◽  
The United States ◽  
Market Potential ◽  
Slow Release Fertilizer ◽  
Aster Ericoides ◽  
Bedding Plant ◽  
Significant Difference ◽  
Northwest Arkansas ◽  
Release Product

Success of European research and marketing efforts on perennial garden asters prompted American nurserymen to introduce (Aster novi-belgii and Aster ericoides) for fall bedding plant sales in the United States. This research investigated the feasibility of asters for outdoor production in Northwest, AR. and examined general cultural practices for growing asters in this region. Variety, fertilization and pruning trials with 15 cultivars of perennial aster were conducted at Fayetteville, AR. in 1992. Six varieties demonstrated retail market potential based on appearance and growth habit. Plants produced from rooted cuttings established 6 June in 3.78-liter containers were of high market quality in 8-12 weeks. A conventional resin-coated slow release fertilizer plus 500 ppm N weekly or conventional slow release product plus 180 ppm N constant feed, produced better growth than the slow release fertilizer used alone. Of 9 pruning regimes, results showed a significant difference in plant height and width by treatment across varieties. The differences among treatments were consistent for each variety. Pruning had no significant effect on bloom date or duration of bloom.

scholarly journals Postharvest quality of Aster ericoides after treatment with silver thiosulphate and sucrose

2018 ◽  
Vol 48 (12) ◽  
Author(s):  
Kathia Fernandes Lopes Pivetta ◽  
Claudia Fabrino Machado Mattiuz ◽  
Regina Ferreira de Melo ◽  
Renata Gimenes ◽  
Gustavo de Nobrega Romani ◽  
...  
Keyword(s):  
Polynomial Regression ◽  
Sucrose Solution ◽  
Fresh Mass ◽  
Postharvest Quality ◽  
Vase Life ◽  
Cut Flowers ◽  
Silver Thiosulphate ◽  
Randomized Design ◽  
Aster Ericoides ◽  
Relative Water

ABSTRACT: Aster (Aster ericoides L.) is a flower crop of North American origin, which belongs to the family Asteraceae. This plant presents capitulum-type inflorescences, widely used as cut flowers. In Brazil, it has been grown only recently, but still has a high expansion potential. In floriculture, pulsing and conditioning solutions are often used to extend the vase life of cut flowers. The present study aimed to evaluate the influence of silver thiosulphate (STS) pulsing and sucrose solutions on the postharvest life of A. ericoides stems. The experiment was carried out under a complete randomized design with treatments arranged in a 2x5 factorial scheme. Treatments consisted of flower stems treated with STS pulsing for 30 minutes, combined with four sucrose concentrations (5, 10, 15, and 20%) for six hours, plus a control (without treatment). Each plot contained four replicates of 10 stems, totalizing 400 stems. The following variables were daily: vase life, fresh mass, and relative water content (RWC). For pulsing data, means were compared by the Tukey’s test (p≥5%). Yet for sucrose concentrations, means were submitted to a polynomial regression to verify the behavior of variables as a function of concentrations increases. Likewise, each treatment was evaluated for fresh mass and RWC variations over time by a polynomial regression. Results indicated no effect of STS pulsing (2mM) on the vase-life length of aster stems. In contrast, the sucrose solution at 10% extended the vase life of stems by two days, decreased fresh mass loss, and helped maintain water balance in stems.

scholarly journals Crescimento e absorção de nutrientes pelo Aster ericoides cultivado em solo sob estufa

2005 ◽  
Vol 23 (2) ◽  
pp. 271-274 ◽  
Author(s):  
Mônica S. de Camargo ◽  
Simone da C. Mello ◽  
Gláucia Regina Anti ◽  
Quirino Augusto de C. Carmello
Keyword(s):  
Aster Ericoides

O Aster ericoides é flor de corte recente no Brasil com grande potencial de produção e aceitação pelo mercado consumidor, mas são escassas as informações sobre sua nutrição e adubação. O objetivo foi avaliar o crescimento, produção de matéria seca e a absorção de nutrientes pelo Aster ericodes (cv. White Master) cultivado em estufa comercial. Plântulas dessa espécie foram transplantadas para canteiros após 30 dias da semeadura, em outubro de 1999. As avaliações do material vegetal foram feitas aos 15; 30; 45; 60; 75; 90 e 96 dias após o transplantio. O crescimento inicial foi lento, mas aos 60 dias as plantas já haviam atingido 69% do crescimento em altura e, respectivamente, 27 e 50% do peso final da matéria seca da parte aérea e das raízes. O aparecimento dos botões florais ocorreu no período de 75 a 90 dias. No final do ciclo, as plantas atingiram 137 cm e 24,21 g de matéria seca. A absorção de macronutrientes (kg ha-1) pela parte aérea aos 96 dias foi de: 316,32 de K > 230,52 de N > 35,30 de P > 18,54 de S > 16,14 de Mg > 8,58 de Ca e de micronutrientes (g ha-1) 3464,89 de Mn > 1603,23 de Fe > 1104,12 de Zn > 308,40 de B > 61,02 de Cu.

scholarly journals First Report of Powdery Mildew on Heath Aster Caused by Erysiphe cichoracearum in Argentina

Plant Disease ◽  
2000 ◽  
Vol 84 (9) ◽  
pp. 1044-1044
Author(s):  
S. Wolcan ◽  
L. Ronco
Keyword(s):  
Powdery Mildew ◽  
Buenos Aires ◽  
Morphological Characteristics ◽  
Buenos Aires Province ◽  
Abaxial Surface ◽  
Basal Ring ◽  
First Report ◽  
Erysiphe Cichoracearum ◽  
Aster Ericoides ◽  
Germ Tubes

In 1995, powdery mildew was observed on commercial greenhousegrown Aster ericoides L. from La Plata, Buenos Aires Province. The disease affected about 95% of the growers. Mildew first appeared as white circular patches on the adaxial surface of leaves. As disease progressed, the abaxial surface of leaves, petioles, stems, and calyces were covered by cottony masses of mycelium and conidia, and basal leaves later wilted and died. Young plants (4 to 5 leaves) through flowering plants were affected. Conidia were ovoid-cylindrical, often slightly constricted at the ends, and were produced in chains on unbranched conidiophores. Conidia lacked fibrosin bodies and ranged from 30 to 41 μm × 10 to 19 μm. Long unbranched germ tubes were formed from the ends of conidia. The morphological characteristics of the fungus fit those described for Erysiphe cichoracearum DC (1). In addition, the perfect stage was found on older tissues. Subglobose, dark brown cleistothecia (105 to 210 μm in diameter) with a basal ring of myceloid appendages were observed. Cleistothecia contained multiple ellipsoid asci (48 to 69 μm × 30 to 37 μm) with two hyaline, one-celled, ellipsoid ascospores (22 to 26 μm × 11 to 15 μm). Pathogenicity was tested by pressing diseased leaves onto healthy leaves of aster cv. Sunset and incubating plants in humidity chambers for 48 h. The powdery mildew that developed was morphologically identical to the original isolate. This is the first report of E. cichoracearum on heath aster in Argentina. Reference: (1) H. J. Boesewinkel. Bot. Rev. 46:167, 1980.

THE KARYOTYPE OF ASTER ERICOIDES (ASTERACEAE): SOME CANADIAN POPULATIONS

1976 ◽  
Vol 18 (4) ◽  
pp. 661-664 ◽  
Author(s):  
John C. Semple
Keyword(s):  
Chromosome Number ◽  
Aster Ericoides

Chromosome number determinations from five populations of Aster ericoides L. were either n = 5 or 2n = 10. Measurements of short and long arms of each pair of chromosomes are given. Previous reports of the chromosome number of the species are discussed. Some aneuploidy may be occurring in the species.

The biology of Canadian weeds. 125. Symphyotrichum ericoides (L.) Nesom (Aster ericoides L.) and S. novae-angliae (L.) Nesom (A. novae-angliae L.)

2003 ◽  
Vol 83 (4) ◽  
pp. 1017-1037 ◽  
Author(s):  
J. G. Chmielewski ◽  
J. C. Semple
Keyword(s):  
United States ◽  
Nova Scotia ◽  
New England ◽  
Deciduous Forest ◽  
Natural Populations ◽  
The United States ◽  
Eastern Deciduous Forest ◽  
Aster Ericoides ◽  
Infraspecific Taxa ◽  
Herbaceous Perennial

Symphyotrichum ericoides, the heath aster, is a herbaceous perennial, arising from woody, corm-like rootstocks or herbaceous rhizomes. This facultative upland species occurs in open, dry ground in plains, railway sidings, prairies, ranges, glades, grassy hillsides, dunes, sand bars, river banks, shore salt flats, and thickets. A weed in Canada, and sometimes declared so in the United States and other times not, S. ericoides has an extensive North American distribution, occurring from Nova Scotia and Maine in the east, westward to southern British Columbia, and southward to northern Mexico. No infraspecific taxa are recognized in this treatment of the species. Symphyotrichum novae-angliae, the New England aster, is a herbaceous perennial, arising from thick, short-branched, woody rootstocks. This facultative wetland species occurs in open places such as along roadside ditches and fence rows, on dry ground in plains, prairies and glades, in clearings, meadows and abandoned fields, and along stream banks and swamps, or in moist open or sometimes wooded places. A weed in both Canada and the United States, S. novae-angliae occurs commonly throughout the northern two-thirds of the eastern deciduous forest region of North America and onto the Great Plains. In the east, Nova Scotia populations are likely escaped cultivars, but in the west, isolated natural populations occur from the Black Hills region of South Dakota south to New Mexico. No infraspecific taxa are reco gnized in this treatment of the species. In those habitats where the two species co-occur, the morphologically intermediate F1hybrid S. amethystinum is often found. Key words: Symphyotrichum ericoides, Aster ericoides, Aster multiflorus, heath aster, Symphyotrichum novae-angliae, Aster novae-angliae, New England aster

scholarly journals Ocorrência de Sclerotinia sclerotiorum (Lib.) de Bary em Aster ericoides L. (White Show) no estado de São Paulo, Brasil.

2006 ◽  
Vol 32 (3) ◽  
pp. 293-294
Author(s):  
César Júnior Bueno ◽  
Márcia Michelle de Queiroz Ambrósio ◽  
Nilton Luiz de Souza
Keyword(s):  
Sclerotinia Sclerotiorum ◽  
Sao Paulo ◽  
São Paulo ◽  
Aster Ericoides
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