Effect of Aluminum-sulphate and Stem Recutting on quantitative and qualitative characteristics of Rose (Rosa hybrida cv. varlon)

The aim of this reaserch was evaluathng the aluminum-sulphate concentration levels in preserved solution with stem recutting on longevity of rosa hybrida cv. varlon cut flowers. The investigation was conducted in Horticultural lab, Agricultural College, Zanjan University. Rose cut stems were produced in greenhouse from biennial mother stocks and were placed under the treatment of aluminum-sulphate solution with concentrations of (0, 100, 150, and 200 mg/L) and stem recutting under 2 levels (with and without cutting). Some physiological traits were measured during the study included: longevity, a, b and total chlorophyll content, water absorption content, relative water content, total protein, peroxidase enzymes and catalase enzymes activity of petals. Results showed that different levels of aluminum-sulphate had significant affect on b-chlorophyll content and activity of anti-oxidant enzymes (P<1%), as well as longevity, total chlorophyll content and relative water content (P<5%). Also, stem recutting levels had significant effect on longevity, chlorophyll content, water absorption, relative water content, total protein and activity of anti-oxidant enzymes. The results obtained from interaction of application of aluminum-sulphate by stem recutting showed that application of aluminum-sulphate with 150 mg/l along with stem recutting caused significant increase in b-chlorophyll content, activity of peroxidase and catalase enzymes activity (P<1%), as well as chlorophyll content, water relative content, longevity (P<5%) and that in turn, caused a increase in, longevity and quality and a decrease in percentage of flower senescence.