Effects of different CO2 enrichment programs on cut roses (Rosa hybrida) production
Huitang Pan
Abstracts of 27th International Horticultural Congress & Exhibition (IHC 2006), August 13-19, 2006, COEX (Convention & Exhibition), Seoul, Korea. 494 pages.
2006
บทคัดย่อ
Effects of different CO2 enrichment programs on cut roses (Rosa hybrida) production
The effects of CO2 enrichment (1000+200 μL-L-1 ) on cut flower production of Rosa hybrida cv. Escimo, Black Beauty and Dream grown in greenhouse were investigated in Beijing from October 2000 to February 2001 with an environment temperature of 17-25°C and an average daily photosynthetic active radiation of 114 μmolm-2s-1.Different CO2 enrichment programs included the morning CO2 enrichment from 8:00 to 12:00, the afternoon CO2 enrichment from 13:00 to 17:00, and the day-long CO2 enrichment from 8:00 to 17:00.The yield of cut flower of Escimo and Black Beauty grown under day-long CO2 enrichment were the highest with increase of 77% and 44%, respectively, more than the plants grown without CO2 enrichment; meanwhile, the increase of cut flower yield under the morning CO2 enrichment and the afternoon CO2 enrichment were 41.5% and 28.4% for Escimo and 18.2% and 19.5% for Black Beauty.The cut flower yield of Dream grown under morning CO2 enrichment was the highest with an increase of 115.9%, more than plants grown without CO2 enrichment and the average length of cut shoots was the longest.The results show that CO2 enrichment improved cut rose production and quality by raising the flowering percentage of lateral shoots and the shoot length.