| Summary: | 碩士 === 國立臺灣大學 === 園藝學研究所 === 99 === Anthurium (Anthrium andraeanum Lindl.) is an important cut flower for export in Taiwan with Japan as its major market. During the process of export, the anthurium cut flowers were packed in commercial package and shipped horizontally for more than 6 days. This handling process usually resulted in upward bending of stem neck, the junction between spadix and the flower stalk, from 0 degree to 40~45 degrees; thus reduced the overall quality of the cut flower. Without proper handling after harvest, the vase life of anthurium cut flowers would gradually reduced after prolonged shipment. This study investigated the cause of upward bending of stem neck and treatments to alleviate this phenomenon, and the application of various chemicals in pulsing treatment on the post-shipment vase life of anthurium cut flower.
Smearing the upper side of the junction of stem neck of ‘Tropical’ anthurium cut flower held horizontally with CaCl2, IAA (Indole-3-acetic acid) and EGTA (Ethylene glycol tetraacetic acid), all of which are gravity-related chemicals, did not alter the bending angle very much. The angle of stem neck of ‘Tropical’ anthurium cut flowers that were sprayed with 10 ppm BA (Benzyladenine) or 10 ppm GA4+7 (Gibberellin A4+7) + BA then packed in commercial package and stored at 20℃ for 6 days, changed gradually to 0 degree when held in vase within 3~4 days at 25℃ after storage. However, severe green spot appeared on the spathe in BA-treated flower. The angle of stem neck of flowers pulsed with 1 % sucrose after harvest then sprayed with 30 ppm GA4+7 + BA and then packed and stored at 20℃ for 10 days, returned to less than 5 degree when held in vase within 6 days at 25℃ after storage. Both BA and GA4+7 + BA treatments extended the vase life of the flower by 6 days as compared with the control, after the flowers were stored for 6 and 10 days.
Pulsing ‘Tropical’ anthurium cut flower with the following chemicals: 20~100 ppm abscisic acid (ABA) and salicylic acid (SA) for 1、2、6、12 hours, 1~5 % sucrose and glucose for 2、6、12 hours, 100~10000 ppm trehalose for 1~12 hours, couldn’t extend the vase life of the flower after 3 days of storage at 20℃. Pulsing treatments with 20 ppm SA for 2~12 hours even reduced the vase life by 3~4 days. Pulsing treatments immediately after harvest were also ineffective. No improvement in vase life were observed in flowers pulsed with 1% sucrose、glucose and trehalose, 0.1 mM silver thiosulfate (STS) and 100 ppm citric acid immediately after harvest for 3 hours then packed in commercial package and stored at 20℃ for 6 days. All these chemicals studied in this experiment as pulsing agents were ineffective in improving the vase life of ‘Tropical’ anthurium cut flower after simulated shipment.
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