EFFECTS OF CALCIUM, 6-BENZYLADENINE AND PACLOBUTRAZOL ON INFLORESCENCE QUALITY OF ONCIDIUM

Xiaorong Liu, Feixiong Liao, Yechun Xu, Biqing Wang
Experiments were conducted in 2007 and 2008 to determine the effect of calcium (Ca), or Ca in combination with 6-benzyladenine (6-BA) or paclobutrazol (PP333) on plant growth, flowering, and inflorescence quality of Oncidium ‘Goldiana × Onc. Guiena Gold’. Treatments comprised: 300 mg/L Ca, 300 mg/L Ca + 50 mg/L 6-BA, 300 mg/L Ca + 100 mg/L 6-BA, 300 mg/L Ca + 100 mg/L PP333, and 300 mg/L Ca + 500 mg/L PP333. The experiments were arranged in a random block design consisting of 15 pots with flower buds about 1-5 cm in length per treatment. Days of budding stage, initial flowering and peak flowering were recorded. The variables were measured at peak flowering time: diameter of basal peduncle, peduncle length, inflorescence length, number of branches and florets. All the treatments promoted the flowering compared to the control, especially 300 mg/L Ca + 100 mg/L PP333 and 300 mg/L Ca + 500 mg/L PP333, These treatments advanced days of budding stage, initial and peak flowering in 6.2 d, 6.5 d, 15.0 d and 6.7 d, 6.6 d, 15.2 d, respectively. As far as inflorescence quality index were concerned, the effect of 300 mg/L Ca + 100 mg/L PP333 was better than 300 mg/LCa + 500 mg/L PP333. Thus our experiments suggest that 300 mg/L Ca + 100 mg/L PP333 was the best to improve Oncidium inflorescence quality.
Xiaorong Liu, , Feixiong Liao, , Yechun Xu, and Biqing Wang, (2012). EFFECTS OF CALCIUM, 6-BENZYLADENINE AND PACLOBUTRAZOL ON INFLORESCENCE QUALITY OF ONCIDIUM. Acta Hortic. 937, 621-626
DOI: 10.17660/ActaHortic.2012.937.76
https://doi.org/10.17660/ActaHortic.2012.937.76
orchid, plant growth regulator, cut flower
English

Acta Horticulturae