- 期刊
白花蝴蝶蘭葉片性狀與開花性狀之相關性探討
Correlation Analysis between Leaf and Flower Traits of Phalaenopsis amabilis (L.) Blume
摘要
本研究以三個不同蘭園栽培的白花蝴蝶蘭 [Phalaenopsis amabilis（L.）Bl.]未開花大苗各40株為試驗材料，調查每株之葉片外觀性狀與開花後的花朵性狀，用來探討開花前葉片性狀與開花後花朵性狀之間的關係。將所有植株的6個葉片性狀及6個花朵品質性狀進行典型相關分析（canonical correlations analysis），結果顯示，葉片性狀組與花朵品質性狀組之間具有極顯著的相關性，前兩對典型相關係數分別為0.88與0.56，在葉片性狀組中以第二葉片厚度（LT2）、第一葉片寬度 （LW1）、第二葉片寬度（LW2）、第三葉片寬度（LW3）等4個性狀，對於葉片性狀典型相關變數的影響較大。花朵品質性狀組中以花朵總數（TFN）、花梗長度 （SL）、花梗直徑（SD）、花朵直徑（FS）、花梗數（SN）、花瓣厚度（PT）等6個性狀，對於花朵品質性狀典型相關變數的影響較大；而葉片性狀組中以LT2、LW1、LW2、LW3等4個性狀對花朵品質性狀典型相關變數的影響較大。因此，若希望未來能獲得較佳之開花品質，應選擇第二葉片較厚及第一、二與三成熟葉片的寬度較大之植株。此結果可提供蝴蝶蘭栽培業者參考應用，並能利用簡單的測度工具即可快速獲得量測數據，作為催花判斷的依據。
並列摘要
Forty unspiked plants of Phalaenopsis amabilis (L.) Blume were collected from each of three orchid nurseries as plant materials. The external traits of each plant were measured and the relationships between leaf and flowering qualities were assessed. The data collected from traits of 6 leaves and 6 flower of all plants were analyzed by canonical correlation. Results showed that the correlation between leaf-trait group and flower quality-trait group was significant. The first two canonical correlation coefficients were 0.88 and 0.56. Higher values of canonical correlation coefficients for leaf traits were in the thickness of second leaf (LT2), the width of first leaf (LW1), the width of second leaf (LW2), and the width of third leaf (LW3). For flower quality traits, the coefficients were higher in the total flower number (TFN), the spike length (SL), the spike diameter (SD), the flower size (FS), the spike number (SN), and the petal thickness (PT). The canonical variables for flower quality traits were significantly affected by leaf traits in groups of LT2, LW1, LW2 and LW3. In other words, better flowering quality could be expected with leaf traits of larger leaf area in the first three leaves and thicker leaf in the second leaf. These indicators could be used as non-destructive indices for selecting phalaenopsis plants that will have higher flower quality at a later time.