乙烯與1-MCP前處理對台灣蝴蝶蘭盆花花朵萎凋之影響

Effects of Ethylene and 1-MCP Pretreatment on Flower Wilting of Potted Phalaenopsis amabilis var. formosa Shimadzu

林鄉薰(Hsiang-Hsun Lin) ； 李哖(Nean Lee) ； 張天鴻(Ten-Hung Chang)

《中國園藝》 49卷2期 (2003/06) Pp. 199-210

https://doi.org/10.6964/JCSHS.200306.0199

摘要

本研究以台灣蝴蝶蘭(Phal. amabilis var. formosa Shimadzu)探討蝴蝶蘭對乙烯敏感度，及乙烯作用抑制劑1-MCP(1-methylcyclopropene)的效應，取花梗上具10朵花苞進行，經1天黑暗貯運後陳列於溫室3天，第一大花苞黃化16%，黃化比例依花序位置（由下往上）遞減，最幼嫩花苞只有1.3%。以0.1-3.2 μL•L^(-1)乙烯處理12小時，花朵及花苞在一週內迅速萎凋達13-100%，濃度增加則萎凋加速，並增加其萎凋率，且較早開放之花朵及最大花苞對乙烯最敏感。供試花苞先處理800 nL•L^(-1) 1-MCP 12小時再處理2 μL•L^(-1)乙烯，幾乎可完全抑制乙烯所造成花朵及花苞萎凋的現象，但於處理後12-15天花朵萎凋率明顯增加，顯示1-MCP在台灣蝴蝶蘭上抑制乙烯之作用僅達12-15天。處理後30天，乙烯處理者花朵萎凋率仍較對照組不處理者爲速，且植株放置在溫室較低光室內者萎凋較少，顯示較強光可降低乙烯的殘效。1-MCP 800 nL•L^(-1)處理4小時或100 nL•L^(-1) 1-MCP處理8小時，都可保護花朵及花苞受乙烯之傷害。

關鍵字

蝴蝶蘭 ； 乙烯 ； 1-MCP 1-methylcyclopropene ； 花朵萎凋

並列摘要

The sensitivity of Phalaenopsis amabilis var. formosa Shimadzu (TS97) to ethylene and 1-MCP (1-methylcyclopropene) pretreatment was studied. To simulate dark transportation of Phal. (TS97), flower stalk with 10 buds were sleeved and boxed for one day. Then observed for 3 days, the bud wilting ratio decreased with increasing inflorescence position counted from below to top. Potted Phal. (TS97) flowers that were exposed to 0.1-3.2 μL.L^(-1) ethylene for 12h, had a wilting ratio for both flower and bud between 13-100% after 7 days. As ethylene concentration increased, the response of flower wilting was enhanced. The first bloom and the largest buds were most sensitive to ethylene.
Flowers treated with 800 nL.L^(-1) 1-MCP (a volatile ethylene binding inhibitor) for 8 hours followed by 12 hours of ethylene exposure remained fresh without wilting up to 15 days. However, treatment with 1-MCP after 12-15 days, the flower wilting was increased with 1-MCP treatment. The data showed that 1-MCP blocked ethylene action of Phal. (TS97) during 12-15 days. Regarding lighting effect, more flowers wilting of Phal. (TS97) were recorded an indoor environment (23±1℃, 15-16 μmol.m^(-2).s^(-1) for 12 hours per day) than in the greenhouse 30 days after treatment. These results indicate that plants in bright greenhouse could decrease the ethylene action. Nevertheless, pretreatment with 1-MCP 800 nL.L^(-1) for the 4h or 100nL.L^(-1) for 8h could reduce the flower and bud wilting caused by ethylene on Phal. (TS97).

並列關鍵字

Phalaenopsis ； ethylene ； 1-methylcyclopropene ； flower wilting