ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Postharvest handling of cut campanula flowers

T. Bosma and J. Dole

HortScience. Volume 37, Issue 6, October 2002, Pages 954-958.

2002

บทคัดย่อ

Various postharvest treatments were applied to evaluate and improve the longevity and quality of cut Campanula medium L. ‘Champion Blue’ and ‘Champion Pink’ stems. Stems could be stored at 2 ^oC either wet or dry with no difference in vaselife, percent flowers opened or quality ratings at 9 d; however, flowers stored dry had a slightly greater percentage of senesced flowers at termination and lower quality ratings 3 and 6 d after placement in the postharvest area. Increasing storage duration from 1 to 3 weejs decreased vase life and quality ratings. Stems pretreated for 4 h with 38 ^oC deionized floral solution [water amended to pH 3.5 with citric acid and 200 mg.L^-1 8-hydroxyquinoline citrate (8-HQC)] followed by a 5% sucrose pulse solution produced the longest vase life (10.3 d) and maintained high quality even at 6 d (4.2, with 5.0 as best). Flowers opening after treatments commenced were paler than those flowers already opened and 24-h pretreatment with 5 or 10% sucrose did not prevent the color reduction in flowers opening after treatment. Stems had an average vase life of only 3.3 d when placed in floral vase foam but lasted 10.0 d without foam. Optimum sucrose concentration was 1.0 to 2.0% for stems placed in 22 ^oC floral vase solution without foam and 4% for stems placed in foam. High (110 umol.s^-1 .m^-2 ) or low (10 umol.s^-1 .m^-2) light levels did not affect postharvst parameters, but the most recently-opened flowers under low light conditions were paler than those under high light conditions.