摘要
「台農一號」百香果扦插植株，於台北1-3月間（非百香果花期）以高壓鈉光燈每日光中斷2小時(11:00 PM~1:00 AM)，明顯促進生長和花芽形成，對照組則生長慢且全無花芽形成。為進一步確定光週效應，另於4-6月間（百香果初花期），每日以高壓鈉光燈電照4小時，但電照時間不同“結果加強電照處理(6:00 AM~10:00 AM)和對照組（無電照處理）之問無顯著差異；而延長電照處理(6:00 PM~10：00 PM)（具長日效果）可使花芽形成時間提早、花芽形成節位降低，但營養生長則較前二種處理稍差。由上述結果確認百香果具光週效應，爲長日性植物。即長日可促進花芽形成和開花。
並列摘要
Effects of photoperiod on flower formation of the cutting plants of passionfruit cv. Tai-nuug No.1 were investigated. Under off-season flowering period (Jan-Mar.) in Taipei, the light-break treatment which supplied the plants with HPS lamps at 11:00 PM-1:00 AM promoted vegetative growth and flower formation. The control plants grew slowly and had no flower formation. Under on-season flowering period (Apr-Jun.), the plants of the long-day treatment (supplied with HPS lamps at 6:00 PM-10:00 PM had earlier flower formation and lower node number to first flower than those of the supplement-light treatment (supplied at 6:00 AM-10:00 AM) and the non-supplement treatment. The effects of the last two treatments on flower formation were not significant. These results demonstrated that passionfruit cv. Tai-nung No.1 is a long-day plant.
延伸閱讀
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