Relationship between dry matter distribution at harvest and postproduction quality in potted roses.
Hoyer, L.; Salhoj, K.;
Acta Horticulturae Year: 2001 Issue: No. 543 Pages: 119-124 Ref: 17 ref.
2000
บทคัดย่อ
The correlation between dry matter distribution and post-production quality in 3 cultivars (Charming Parade, Royal Parade, and Dreaming Parade) of potted miniature roses (Rosa hybrida) was evaluated under 3 different environmental conditions during 1996. Rooted cuttings were grown at 3 different nurseries, 2 in Denmark and one in the Netherlands, under standard commercial conditions. Six pot plants of each cultivar, having 5-8 open flowers (marketing stage), were randomly selected and analysed. Post production quality was evaluated after simulated transport (16 deg C, 90% RH, in the dark for 3-4 days) and then under indoor conditions (20 deg C, 60% RH, in a 12-h photoperiod). Significant correlations were observed between the number of days to 50% wilting and the dry weight of different plant parts of the pot roses at the marketing stage. The general correlations across the cultivars and replicates were negative with respect to the dry weight of the flowers, but positive with regard to the dry w
eight and number of green buds. The cultivar Charming Parade had all negative correlations between the days to 50% wilting and the dry weight of different plant parts, while only a few correlations were found for the other 2 cultivars. A negative correlation was observed between the dry weight of single flowers and the number of days to 50% wilting. The results indicate that post-production quality of Dreaming Parade and Charming Parade was correlated to the distribution of dry matter at the marketing stage.