Abstract

ABSTRACT This reasearch was conducted in agricultural faculty of Tehran University in 2005 for evaluation the effect of application aluminum-sulphate levels in preservation solution with stem recutting on longevity of rosa hybrida cv.Illona Key Words: Rosa ,Illona ,aluminum sulphate ,stem recutting ,protein ,peroxidase ,katalase enzymes. cut flower.Cut stems of rosa that produced in greenhouse from biennial mother stocks was placed under treatment of aluminum-sulphate solution with concentrations (100- 150- 200 ppm) and stem recutting in 2 levels (by cutting / without cutting). Then in this treated flowers, measured this trait include (longevity / a, b chlorophyll / water absorption content / relative water content / total protein / activity of peroxidase and catalase enzymes in petals.The results showed that the different levels of aluminum-sulphate had significant effect on senescence percent, chlorophyll content, relative water content and activity of anti- oxidant enzymes.Also, stem recutting levels had significant effect on senescence percent, chlorophyll content, water absorption, relative water content, total protein, activity of anti- oxidant enzymes. Obtained results from interaction effect of between application of aluminum-sulphate and stem recutting showed that application of aluminum-sulphate with 150 ppm together with stem recutting caused significant increasing in b chlorophyll, total chlorophyll, water relative content and activity of peroxidase and catalase enzymes, from this way caused decreasing in flower senescence percent.