Manutenção da qualidade e aumento da longevidade floral de crisântemo cv. White polaris

Escolheu-se o crisântemo, por ser a principal flor de corte comercializada no Estado de São Paulo, para iniciar um processo de melhoria de qualidade com conseqüente padronização para a floricultura brasileira, tanto para a produção de consumo interno quanto para aquela destinada à exportação. Através da avaliação da qualidade de inflorescências de crisântemos do grupo Polaris produzidos em diferentes regiões, e comparação com os padrões existentes, pretendeu-se chegar a um padrão nacional para crisântemos de corte. Os parâmetros analisados foram: comprimento de haste; peso da matéria fresca da haste floral; número de inflorescências abertas e por abrir; localização e número de ramificações; rigidez de haste; defeitos de formação; presença de resíduos químicos e incidência de pragas e moléstias. Os dados obtidos permitiram concluir que comprimento, peso da matéria fresca e rigidez de haste foram os parâmetros que mais se aproximaram dos padrões existentes; número de inflorescências, localização e número de ramificações e presença de hastes tortas indicaram a necessidade de maiores cuidados nas operações de desbotoamento e elevação da rede de sustentação; presença de resíduos químicos e de pragas e moléstias mostraram os piores resultados, requerendo estudos visando a adequada aplicação de defensivos agrícolas para o efetivo controle das pragas e moléstias, não deixando resíduos químicos . Com esses resultados, verificou-se não ser possível elaborar, de imediato, um padrão nacional para crisântemos de corte.

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QUALIDADE DE CRISÂNTEMOS (Dendranthema grandiflora TZVELEV) PRODUZIDOS EM DIFERENTES REGIÕES DO ESTADO DE SÃO PAULO: GRUPO POLARIS

Silveira

Minami

1999

Sci. agric. (Piracicaba, Braz.)

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Conjoint Analysis of the Korean Floriculture Market for the Main Cut Flowers to Predict the Demand for Floriculture Plants

Lim¹,

Shim²,

Seo³

et al. 2014

HST

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This study was conducted to improve the consumption of floriculture plants by researching preferences of consumers for the main types of cut flowers. We analyzed the results of surveys, carried out by a company, that were largely about roses, chrysanthemums, and lilies. After departmentalizing consumers into groups and analyzing the results through conjoint and cluster analysis, we found that consumers showed a higher rate of use based on price and vase life than on flower color and flower shape in roses. The groups of rose consumers preferred a price of 1000 won, spray type flower shape, vase life of 7-8 days, and red flower color. In chrysanthemums, consumers showed higher rate of use for flower color than for vase life, flower shape, and price. The groups of chrysanthemum consumers preferred a price of 1000 won, standard flower shape, 16-20 days vase life, and yellow flower color. In lilies, consumers showed higher use rate for flower shape than vase life, price, and flower color. Lily consumers preferred a price of 2000 won, large flower shape, 4-7 days vase life, and yellow flower color. Thus, the major cut flowers (rose, chrysanthemum, and lily) all showed highest use rates in for vase life. These results highlight the importance of understanding the characteristics of consumer interests. They also emphasize that we should plan and create market-oriented and consumer-oriented products to improve the consumption of floriculture plants.

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Current Research Trend of Postharvest Technology for Chrysanthemum

Kim¹,

Lee²,

Kim³

2012

Korean Journal of Plant Resources

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-Chrysanthemum is a cut flower species that normally lasts for 1 to 2 weeks, in some cases 3-4 weeks. This has been attributed to low ethylene production during senescence. Reduction in cut flower quality has been attributed to the formation of air embolisms that partially or completely blocks the water transport from the vase solution to the rest of the cut flower stem, increasing hydraulic resistance which may cause severe water stress, yellowing, wilting of leaf, and chlorophyll degradation. Standard type chrysanthemum can be harvested when buds were still tightly closed and then fully opened with the simple bud-opening solution. Standard type chrysanthemum can also be harvested when the minimum size of the inflorescence is about 5-6 cm bud which opened into the first flower full-sized flower. While spray varieties can be harvested when 2-4 most mature flowers have opened (40% opening). Cut flowers are sorted by stem length, weight, condition, and so on. Standard chrysanthemum is 80 cm length for standard type and 70cm for spray type. Pre-treatment with a STS, plant regulator such as GA, BA, 1-MCP, chrysal, germicide, and sucrose, significantly improved the vase life and quality of cut flowers. It is well established that vase solutions containing sugar can improve the vase life of cut chrysanthemum. Chrysanthemum is normally packed in standard horizontal fiberboard boxes. Chrysanthemum should normally be stored at 5-7℃. Precooling resulted in reduction in respiration, decomposition, and transpiration activities as well as decoloration retardation. There was significant difference between "wet" storage in 3 weeks and "dry" storage in 2 weeks. In separate pulsing solution trials, various germicides were tested, as well as PGRs to maintain the green color of leaves and turgidity. Prolonging vase life was attained with the application of optimal solution such as HQS, AgNO3, GA, BA and sucrose. This also retarded senescence in leaves of cut flower stems. Fresh cut chrysanthemum can be transported using a refrigerated van with 5-7℃. Increasing consumption and usage of cut chrysanthemum of various cultivars would require efficient transport system, and effective information exchange among producer, wholesaler, and consumer.

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Manutenção da qualidade e aumento da longevidade floral de crisântemo cv. White polaris

Cited by 3 publications

References 20 publications

QUALIDADE DE CRISÂNTEMOS (Dendranthema grandiflora TZVELEV) PRODUZIDOS EM DIFERENTES REGIÕES DO ESTADO DE SÃO PAULO: GRUPO POLARIS

QUALIDADE DE CRISÂNTEMOS (Dendranthema grandiflora TZVELEV) PRODUZIDOS EM DIFERENTES REGIÕES DO ESTADO DE SÃO PAULO: GRUPO POLARIS

Conjoint Analysis of the Korean Floriculture Market for the Main Cut Flowers to Predict the Demand for Floriculture Plants

Current Research Trend of Postharvest Technology for Chrysanthemum

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