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題 名 | 文心蘭切花之乙烯生成以及外加乙烯與去除花藥蓋對花朵品質之影響=Ethylene Production of Oncidium Flower and the Change of Flower Quality Affected by Ethylene Treatment and Pollinia Cap Removall |
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作 者 | 黃肇家; | 書刊名 | 中華農業研究 |
卷 期 | 47:2 1998.06[民87.06] |
頁 次 | 頁125-134 |
分類號 | 435.431 |
關鍵詞 | 文心蘭; 乙烯; 品質; 老化; 花苞開張; Oncidium orchid; Ethylene; Quality; Senescence; Bud opening; |
語 文 | 中文(Chinese) |
中文摘要 | 文心蘭花苞與花朵之乙烯生成不同,很小的花苞切下後立即密封, 可以測得有乙 烯產生,中等以上的花苞以至唇瓣剛開裂之半開張花朵均測不到乙烯生成,完全開張的花朵 又會產生低量的乙烯。將花苞或花朵插於水中,定期測定乙烯,1 日後均測不到乙烯之生成 ,等到花朵老化或花苞開張後開始老化時再有乙烯生成。乙烯在花朵外觀開始老化當日或次 1 日開始產生,到老化症狀很明顯時乙烯生成最高,之後乙烯生成漸減,呈現一個不很明顯 的更年性曲線之變化。 外加 10ppm 乙烯處理 18 小時會使枝條上的花朵壽命由 15 日減少 為 10 日,花苞開張率及壽命也減少,因此花枝瓶插壽命跟著下降。用 1ppm 乙烯長時間處 理,花朵會迅速老化,以 10 或 50ppm 處理, 花朵老化速度並不會加快,說明乙烯作用飽 和濃度應在 1ppm 或 1ppm 以下。這些結果顯示文心蘭是屬於對乙烯敏感的切花。去除花朵 之花藥蓋會使花朵在數小時內產生乙烯,約 1 日後乙烯之生成下降到測不出來。 這種去蓋 的花朵通常會提早 3 日老化,乙烯生成也較早開始。 將文心蘭側枝插水,去蓋使枝上的花 朵早謝,卻會使剩下的小花苞開張率增加並提高小花壽命。由於文心蘭花朵不論是否去除花 藥蓋,老化時常於外觀上開始顯現老化徵狀之後才測得出乙烯生成,因此這些內生乙烯是否 是引發老化的因素尚待探究。 |
英文摘要 | Ethylene production could be detected from small bud and fully opened floret of Oncidium orchid when they were measured right after detachment. No ethylene was detected from big bud and half opened floret. When the bud and floret were held in water, ethylene production was not detectable in the first few days after detachment. During floret senenscene ethylene production increased on the day or one day after the floret showed symptom of senescence. It reached a peak and then declined. Exogenous 10 ppm ethylene treatment for 18 hours shortened the life span of floret for 5 days. Bud opening and the life span of bud also decreased. Under 1 ppm ethylene environment, Oncidium florets wilted quickly. Increasing ethylene concentration up to 10 or 50 ppm, the floret wilted as fast as at 1 ppm. These data indicated that Oncidium flower is sensitive to ethylene. Removal of pollinia cap would induce the floret to produce ethylene. The ethylene production rose in a few hours after de-capping. It gradually decreased and became undetected one day later. The de-capped floret wilted 3 days earlier than intact floret. Ethylene production of de-cappet floret also rose earlier. De-capping resulted in early senescence of floret, but it increased bud opening and life span of buds on the dame inflorescence. During floret senescence, ethylene production always rose later than the beginning of visiable senescence symptom. It is not clear whether the endogenous ethylene play an important role in inducing floret senescence. |
本系統中英文摘要資訊取自各篇刊載內容。