บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Storage effects on vase life of ‘First Red’ and ‘Akito’ roses grown in create all year round.

Pompodakis N.E., Terry L.A., Joyce D.C., Lydakis D.E., Papadimitriou M.D.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.94

2004

บทคัดย่อ

Storage effects on vase life of ‘First Red’ and ‘Akito’ roses grown in create all year round. Storing cut rose (Rosa hybrida L.) at low temperatures may induce physiological damage that worsens over time.Low temperature stress perturbs the photosynthetic efficiency of susceptible chloroplast-containing plant tissues.Relative chlorophyll fluorescence (Fv/Fm) is a sensitive index of photosystem II (PS II) activities.Fv/Fm and vase life duration were measured for cut ‘First Red’ (red petals) and ‘Akito’ (white petals) rose harvested throughout the year and subsequently stored wet at 1, 5 and 10 °C for 10 days.

Vase life was generally longer for ‘Akito’ versus ‘First Red’ roses.The short vase life of‘First Red’ roses was associated with early flower wilting and petal blueing at around day 8 of vase life.‘Akito’ roses were more susceptible to bent neck.Progressive senescence with increasing storage temperature for both cultivars at 5 and 10 °C was evident as reductions in post-storage vase life.Vase life was longer after storage at 1 °C as compared to 5 and 10 °C.

However, post-storage Fv/Fm was lower indicating low temperature damage to PS II.This reduction in Fv/Fm after storage at 1 °C was more intense for roses grown during winter.Fv/Fm value of both cultivars progressively decreased during vase life evaluation.Overall, these results suggest that physiological damage caused by storage at 1 °C has less impact o­n post-storage vase life than greater rates of senescence during storage at 5 and 10 °C.