Effects of phosphine fumigation on postharvest quality of four Chinese cut flower species |
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| Affiliation: | 1. Department of Entomology, Kansas State University, Manhattan, KS 66506, USA;2. Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS 66506, USA;1. College of Life Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People’s Republic of China;2. Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, People’s Republic of China;3. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, People’s Republic of China;1. Institute of Agriculture and Life Science (BK21+ Program), Gyeongsang National University, Jinju 52828, Republic of Korea;2. Nepal Agricultural Research Council (NARC), Singha Durbar Plaza, Kathmandu, Nepal;3. College of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea;4. Forest Insect Pests and Disease Division, National Institute of Forest Science, Seoul 02512, Republic of Korea;5. Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration, Miryang 50424, Republic of Korea;6. USDA-ARS, US Pacific Basin Agricultural Research Center, Hilo 96720, HI, United States;7. School of Veterinary and Life Science, Murdoch University, 90 South St. WA 6150, Australia;8. College of Agriculture, Kansas State University, Waters Hall 054, Manhattan KS66502, United States;1. Division of Plant Physiology, Indian Agricultural Research Institute, 110 012, India;2. National Research Centre on Plant Biotechnology, New Delhi 110 012, India;3. ICAR Research Complex for Eastern Region, Patna, 800 014, India;1. Academy of National Food and Strategic Reserves Administration, Beijing, 100037, China;2. Henan University of Technology, Zhengzhou, 450001, China;3. Hangzhou Bestgas Co., LTD, Hangzhou, 311404, China |
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| Abstract: | Chrysanthemum (White, Yellow, and Daisy), carnation (Master and Barbara), rose (Carola, Black magic, Diana, Champagne, and Avalanche), and Chinese rose (Golden Medallion, Diplomat, Marina, and Athena) are the main Chinese cut flower species produced for exportation. Cut flowers infested with quarantine pests need methyl bromide (MB) fumigation to satisfy phytosanitary requirements of importing countries. Phosphine (PH3) is a potential alternative to methyl bromide. Development of phosphine as a phytosanitary treatment requires information regarding its phytotoxicity to cut flowers. Therefore phosphine fumigation at 24 °C and 2 °C was investigated to evaluate its effects on the postharvest quality of cut flowers. Phosphine fumigation for 6 h with dosages as high as 12.2 mg L−1 at 24 °C produced no adverse effects on flower color, diameter, vase life, and other damage indices (DI) for all cultivars. However, different adverse effects on some cultivars were observed after 12 d fumigation at 2 °C. There were significant changes for color values of Carola, Black magic, Diana, Champagne, Avalanche, and Diplomat; significant decrease in flower diameter and vase life of Diana, Champagne, and Avalanche at 3.04 mg L−1, white Chrysanthemum and Diploma at 1.52 and 3.04 mg L−1; significant increase in DI of Champagne and Avalanche at 3.04 mg L−1, and White chrysanthemum, Diana, and Diploma at 1.52 and 3.04 mg L−1. In combination with information on phosphine toxicity to insect pests at ambient and low temperatures in the literature, it is suggested that phosphine fumigation could be a viable replacement of MB fumigation for quarantine treatment of these four cut flower species. |
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| Keywords: | Phosphine Flower diameter Vase life Damage indices |
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