Division of Floriculture & Landscaping, Indian Agricultural Research Institute, Pusa, New Delhi 110 012
* Present address: Horticulture Deptt., Egerton University, P.O. Box 536, NJORO, Kenya
Precooling in cut rose cv. Golden Gate with cool storage at 4°C for 24 h and pulsing with 2% dimethyl sulphoxide (DMSO) for 15 min. gave maximum vase life increased the total starch and total soluble sugars (TSS) content but reduced the increase in total free ammo acids (TFAA) in the rose petal tissues both on the third day and at senescence over the untreated control. Prolonged vase life was associated with maximum starch and total soluble sugars content on the third day and at senescence and minimum total free amino acids and phenol content in the petal tissues at senescence stage as influenced by pre-cooling and pulsing treatment.
