Effect of Moss (Hypnum jutlandicum) Extracts and Mixing Treatments with Preservatives on Vase Life of Rosa hybrida 'Enjoy'

Abstract

-This study was performed to develop a natural preservative which had the most successful effect on prolonging the vase life of cut flowers Rosa hybrida 'Enjoy'. To determine the effect of sucrose on vase life of cut roses, R. hybrida 'Enjoy', 0, 1, 3 or 5% of sucrose was mixed with Hypnum jutlandicum extract. The result showed that in the case of adding sucrose to extracts from H. jutlandicum, vase life of cut flowers was shortened, along with the cut flowers losing chlorophyll, becoming decolorized and finally showing wilting phenomenon. However, using hydroxy quinoline sulfate (HQS) and extracts from H. jutlandicum together exhibited an improved effect of prolonging vase life, especially when adding 100 mg · L -1 HQS, which had the effect of prolonging the vase life of R. hybrida 'Enjoy' the most. Regarding pH of extracts, 2 mg · L -1 of extracts from H. jutlandicum show originally pH 3.8. This was compared with adjusted extract solutions as pH 3.0, 4.0 or 5.0. The results showed that the solution of pH 3.8 had the most successful effect on prolonging the vase life of R. hybrida 'Enjoy'. Given all the results, H. jutlandicum extract (2 mg · L -1 ) and HQS (100 mg · L -1 ) was the most effective in prolonging the vase life of cut R. hybrida 'Enjoy'. Moss is expected to be worth developing as a natural preservative since it is easy to get and causes no damage to the environment.

Pretreatments and MEFI Applications for Improving Postharvest Quality of Cut Spray Rosa hybrida L. ‘Lovely Lydia’

“…미생물 발생은 살균제를 통해 억제시킬 수 있으며, silver nitrate, silver thiosulfate(STS), 8-hydroxyquinoline citrate (8-HQC), 8-hydroxyquinoline sulfate(8-HQS), aluminum sulfate[Al 2 (SO 4 ) 3 ]와 같은 살균제들이 사용되고 있다 (Lee and Kim, 2014). Choi et al(2013) 연구에 따르면, aluminum sulfate를 혼합하여 전처리 시 무처리에 비해 절화 장미의 절화수명이 연장되고 품질이 향상된 것으로 조사되었으며, Lee and Kim(2014)은 HQS 200µL·L -1 처리 시 박테리아 축적을 억제시킨 것으 로 연구되었고, Park et al(2011)은 HQS를 100mg·L -1 농도로 혼합하여 사용 시 절화 장미 'Enjoy'의 절화수명 연장 효과가 있 는 것으로 조사되었다. 또한, 절화 장미를 수확 후 silver thiosulfate 처리 시 절화수명이 연장되고 품질이 향상된 것으로 보고되 었다 (Pouri et al, 2017).…”