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Influência do óxido nítrico na longevidade pós-colheita de inflorescências de Epidendrum ibaguense Kunth
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vieira, Luciana Marques |
| Copyright Year | 2013 |
| Abstract | Nitric oxide (NO) acts as an anti senescence substance, which may extend the postharvest life of fruits, vegetables and flowers when they are treated with micromolar concentrations of compounds as donor sodium nitroprusside (SNP). This work aimed to evaluate the effect of NO applied in conditioning solution or sprayed on the longevity of cut inflorescences of the orchid Epidendrum ibaguense. After the harvest the inflorescenses were pulsed for 6, 24 or 48 hours with 5, 10, 50, 100 and 500 μM de SNP or by spraying, until complete wetting of the inflorescence. Controls were treated with distilled water. After the treatment the stems were placed in deionized water, changed every 2 days. No significant differences were observed in the longevity of flowers treated with 5, 10, 50 or 100 μM SNP, regardless of the mode of application. Inflorescences treated with 500 μM SNP in conditioning solution had reduced longevity and increased flower abscission. In inflorescences kept in SNP solution, toxic symptoms such as darkening of the labellum, resulting in reduced longevity for 2 days. The longevity of inflorescences sprayed with 500 μM SNP reduced from 6.8 to 5.1 days. Thus, use of high concentrations of NO donor compounds in vase solution or spraying is toxic to E. ibaguense inflorescences and NO was not able to extend the shelf-life. Key-words: vase life, conditioning solution, spray. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.locus.ufv.br/bitstream/handle/123456789/998/texto%20completo.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
