K.K.PrasadArchana Kumari2024-08-162024-08-162002https://krishikosh.egranth.ac.in/handle/1/5810213261No flower is more steeped in history than rose in all its many lovely forms and no flower is held in greater esteem. The rose reigns supreme as the “Queen of flowers”. It belongs to family Rosacea. Great diversity in plant growth, color of flowers , flower , shape, Fragrance , slow opening of flowers and good keeping quality made roses so popular that it is grown commercially to meet the demand of cut flowers. At present, roses dominate in the group of cut flower crop. Pre and post – harvest management of cut flower is of utmost importance to ensure their long- lasting quality. Selection of suitable cultivars, optimum growing temperature and management of crop are main factors which determine the post –harvest quality of flower. Use of cheaper and easily available floral preservative should be promoted to extend flower longevity. Hence the experiment entitled “Flower bud development and vase life studies in roses” was conducted in winter season 2000-2001. In this experiment, the same age group of plants as well as similar standard cultural practices was adopted for 25 cultivars of rose. All Treatments were replicated thrice in a Randomized Block Design during the course of studies. The post-harvest studies comprised of twenty five varieties tested in tap water and 3% sucrose solution replicated thrice in completely Randomized Design. The results of the experimental studies in roses revealed that the cultivar lover’s meeting had the longest stem length (46.45cm). The cultivars Ace of hearts recorded the longest leaf length (5.19cm) and largest leaf area(8.20cm2). The cultivar Mrinalini had the maximum number of leaves per stem (13.83), while confidence had greatest leaf width (3.36cm) , petal area (27.03cm2), diameter of expended flower (12.67cm), longest polar diameter at initial bud stage . B1, B2, B3 stages and diameter at B4, B5, B6 stages. The cultivar Mattgod had Maximum horizontal diameter at B1, B2, B3, stage and number of petals /flower (62.60) “Abha” had the highest percentage of five leaflets per leaf (35%) and biggest initial horizontal diameter. Flower lasted on the plant for the longest time (20.0days) in cultivar Lagerfeld. The cultivar sunking was earliest to reach B1, B2, B3, B4, B5 and B6 stage. The cultivar “sound” had highest number of prickles. Longevity of flower on plant is significantly positively correlated with length of flower stem and number of leaves per stem. In post-harvest studies, cultivar mrinalini showed the least loss in weight at senescence and longest vase life in both the treatments. “Lady X” had the largest diameter and uptake of water was highest in cultivar love in both the treatments. The Longevity of rose cut flowers in 3% sucrose solution was increased in all the treatments. Association analysis indicated that total water uptake, loss in weight at senescence and flower diameter had positive correlation with vase life in tap water and sucrose.EnglishThesis