次氯酸水對蝴蝶蘭軟腐病防治效果評估

Other Title
Evaluation of Control Efficacy of Hypochlorous Acid Against Phalaenopsis Soft Rot
Journal
台灣農業研究
Journal Volume
74
Journal Issue
1
Start Page
37
End Page
45
ISSN
2790-086X
Date Issued
2025-03-04
Author(s)
農業部農業試驗所
農業部農業試驗所
曾淑瓊
賴思倫
農業部農業試驗所
農業部農業試驗所
DOI
URI
Abstract
蝴蝶蘭為臺灣重要外銷花卉，年產值將近 46 億元。然而蝴蝶蘭細菌性軟腐病 (bacterial soft rot) 是影響臺灣蝴蝶蘭栽培期與外銷產值的重要病害之一。本研究利用次氯酸水 (hypochlorous acid; HOCl) 溶液作為蝴蝶蘭軟腐病防治資材，進行防治效果試驗評估。首先利用不同接種濃度的軟腐病菌測試對蝴蝶蘭軟腐病發生的影響，由結果得知，高濃度菌液 108 CFU mL-1 接種後，其發病率為 58.3−81.3%，106 CFU mL-1 之發病率 25.0−43.8%，但低濃度 104 CFU mL-1 其發病率降至為 0，隨著軟腐病菌接種濃度降低，蝴蝶蘭葉片感染軟腐病之發病率逐漸下降。室內試驗結果所示，以 HOCl 溶液 10 mg L-1 處理軟腐病菌 (108 CFU mg L-1) 10 min 可完全抑制供試菌株之生長。盆栽試驗 (接種濃度 108 CFU mL-1) 結果得知，20 mg L-1 HOCl 濃度下，對蝴蝶蘭軟腐病具有 18.0−66.7% 防治率，當濃度提高至 50 mg L-1 下，防治率則可達 50.0−88.9%，與對照組56.3−88.7% 之發病率有顯著性差異，顯示 HOCl 溶液可降低軟腐病的發病率。因此，本研究之結果得知， HOCl 溶液可作為田間防治蝴蝶蘭軟腐病之參考。
Phalaenopsis orchids are important export flowers in Taiwan, with an annual production val-ue of nearly 4.6 billion NT dollars. However, bacterial soft rot significantly affects their cultivation and export value. Therefore, this study evaluates the effectiveness of hypochlorous acid (HOCl) solution as a control material for preventing bacterial soft rot in Phalaenopsis orchids. Different in-oculum concentrations of the rot bacteria were tested to assess their impact on disease occurrence. Results showed that at a high concentration of 108 CFU mL-1, the disease incidence was as high as 58.3−81.3%, while at 106 CFU mL-1, it was 25.0−43.8%. At a low concentration of 104 CFU mL-1, the incidence decreased to 0%, indicating a gradual reduction in disease occurrence with lower bacterial concentrations. Laboratory experiments demonstrated that treating the bacteria (108 CFU mL-1) with a 10 mg L-1 HOCl solution for 10 min inhibited their growth. Pot experiments revealed that at a HOCl concentration of 20 mg L-1, the control efficacy against bacterial soft rot ranged from 18.0% to 66.7%. In contrast, the control efficacy increased from 50.0% to 88.9% at 50 mg L-1, showing significant dif-ferences in control effectiveness. Thus, HOCl solution can control the bacterial disease of Phalaenop-sis soft rot caused by Dickeya fangzhongdai in orchids.
Subjects
蝴蝶蘭
軟腐病
次氯酸水
防治
Phalaenopsis
Hypochlorous acid
Soft rot
Dickeya fangzhongdai
control
Publisher
農業部農業試驗所
Type
journal article
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