不同來源大白花蝴蝶蘭Phalaenopsis Sogo Yukidian 種苗生育特性之比較

大白花蝴蝶蘭為台灣出口蝴蝶蘭最主要的品項，其代表性品種為Phalaenopsis Sogo Yukidian ukid。此品種多年來經不同業者持續分生繁殖及選拔更新，但多數栽培者仍以 'V3' 為銷售代號。為釐清不同蘭園 'V3'品種種苗生理特性是否相同，本研究透過生理檢測進行試驗。結果顯示，除1 家蘭園大白花蝴蝶蘭之生長最適日/夜溫為28/28℃之外，其餘試驗的6 家蘭園大白花蝴蝶蘭之生長最適日/夜溫皆約為28/23℃。因此，建議種苗在不抽梗前提之下，加大日夜溫差；光強度需求則可區分為低光度 (125 μmol m^(-2) s^(-1)) 及高光度 (250 μmol m^(-2)s^(-1)) 兩群。此外，單位葉面積CO_2 交換量較高者，其開花品質有較佳的趨勢，但總葉面積對此效果有補強作用。整體而言，不同來源大白花蝴蝶蘭品種，種苗生育特性存在差異，影響接力或代工栽培者之管理模式及栽培成本，種苗品質不應只單純考慮葉片數等單一外觀性狀，要多考慮不同CO_2 交換效率之差異。但此差異來自於植物遺傳生理特性或後天栽培管理所致，仍須進一步研究。

關鍵字

CO_2 交換量；溫度；光強度；開花品質

並列摘要

The clones of Phalaenopsis Sogo Yukindian 'V3', a large white flower cultivar, are the major export Phalaenopsis in Taiwan. The clones have been selected and micropropagated for many years, while most growers use 'V3' as the code for marketing. The aim of this research is to clarify the physiological characteristics of these clones from different growers. The results showed that optimum day/ night temperatures of 'V3' clones from 6 different sources were about 28/23℃, except for one which were 28/28 ℃. The optimal light intensity ranged from 125 to 250 μmol m^(-2) s^(-1), depending on plant sources. In addition, the plant with higher CO_2 exchange rate per unit leaf area showed better flower quality, but affected by the sum of total leaf area. Overall, these clones from different growers exhibited different physiological characteristics which will influence the cultural management and cost for each grower. The plant quality cannot be simply considered by leaf numbers or other appearance characteristics. The difference in CO_2 exchange efficiency is an important factor should be considered. Whether the difference is due to plant genetic or cultivation management needs further study.

並列關鍵字

CO_2 exchange rate ； Day/night temperatures ； Light intensity ； Flower quality

國際替代計量

不同來源大白花蝴蝶蘭Phalaenopsis Sogo Yukidian 種苗生育特性之比較

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