Off-season flowering in red pita ya (Hylocereus sp.) can be achieved by night-breaking (nb) With artificial light in a noninductive season.to ensure abundant flowering, 4–6 h of nb is applied and often resulted in over flowering.this study compared the effects of four nb durations (4h [2200-0200 2h [2300-0100hr], 1h [2330-0030hr], and 0.5h [2345-0015hr]) on floral bud formation in late autume The accumulated number of flowering shoots (fs total) Increased as the nb duration increased and 0.5h was not sufficient to force 50% of shoots flowering.the number of days to 50% of the shoots Ing (fs50%) was35 for 14h nb duration treatment S. in latespring, the shoots were more responsive to the nb treatment and the durate However, days to fs50% decreased as the nb duration increased, and the shortest was 28 days in the 4-h treatment.therefore, For obtaining shortest days to fs50%, we suggest that the nb duration in late autumn and early spring shouldbe 1 and 4h, Respectively.thinning out the new sprouting are also in off-season production in early spring.
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