科研之友
微信
新浪微博
Facebook
分享链接
摘要
This study was conducted to investigate the antimicrobial effect of chlorine dioxide (ClO2) on the vase life of cut rose 'Beast' (Rosa hybrida L.). Postharvest treatments to extend the vase life of cut roses were divided into two: holding solution treatment and pulsing solution treatment. In holding solution treatment, the cut roses were treated with preservative solutions containing tap water (TW, control), distilled water (DW), ClO2 2, 4, 6, and 8 mu L center dot L-1, and compared with a commercialized antimicrobial compound of 8-HQS 200 In pulsing solution treatment, cut roses were dipped into the ClO2 solutions of 50, 100, 150, 200, and 250 mu L center dot L-1 for 60 seconds and were placed in DW. The air temperature was 18.4 degrees C, RH 51.5%, and light (photosynthetically active radiation, PAR) 3.6 mu mol center dot m(-2)center dot s(-1) with 12 hour day length. The longest vase life of cut roses was observed in the holding solution with ClO2 4 mu L center dot L-1 as 13.8 days and pulsing with 200-250 mu L center dot L-1 as 13.5-13:7 days, where vase life were extended four days longer than TW. Whereas, the inclusion of 8-HQS 200 mu L center dot L-1 in vase solution resulted in phytotoxicity. The relative fresh weight and water uptake have similar tendencies. Bacteria inhibition by ClO2 and 8-HQS were very effective. But bacteria at TW and DW treatments on cut flower with stem were detected in 3.7 x 10(5) CFU center dot L-1 and 6.3 x 10(5) CFU center dot L-1, respectively (without stem in DW 1.4 x 10(4) CFU center dot L-1). The ClO2 contents in holding solution of all treatments were scavenged in two-four days after treatment. This study indicated that ClO2 4 mu L center dot L-1 holding solution treatment and 200-250 mu L center dot L-1 pulsing solution treatment can be applied to extend the postharvest life of cut roses.
- 出版日期2014-2
