Vol. 11, Issue 10 (2022)

Author(s):
Saurav Thakur and Homraj Anandrao Sahare

Abstract:
The present study entitled, “Effect of holding solution on carnation (Dianthus caryophllyus L.) C.V. Charmant” was carried out in Horticultural Lab, School of Agriculture lovely professional university, Jalandhar, Punjab during the year 2020-2021. The main objective of the investigation was to evaluate the viable postharvest treatment solutions and methodology to extend the vase life of cut carnation based on physical and physiological components. The experiment was laid out in complete random block design consisting of six treatments of different combinations of sucrose, growth inhibitors in different concentration in three replications. Observation was recorded on interval days for eight physical and physiological parameters and were subjected to statistical analysis. The result indicated that the highest WU (14.661) was recorded with 6% Sucrose + 50 ppm AgNo3 followed by 9% Sucrose + 50 ppm AgNo₃ (13.64) and 3% Sucrose + 20 ppm AgNo₃ (11.33). However, the treatment control recorded lowest WU (6.47). Similar results were also reported by Prashanth (2006) ^[7] in cut gerberas. Among the treatments, 6% Sucrose + 50 ppm AgNo₃ recorded highest WB (6.25), followed by 2% Sucrose + 200 ppm 8-HQC + 100 ppm GA3 (5.87) and 9% Sucrose + 50 ppm AgNo₃ (5.747). However, control recorded lowest WB (3.16). The highest FW was observed with 6% Sucrose + 50 ppm AgNo₃ (101.38) followed by 3% Sucrose + 20 ppm AgNo₃ (99.65) and 9% Sucrose + 50 ppm AgNo₃ (99.27), whereas, the treatment control recorded significantly lowest FW (89.66) and the remaining treatments recorded intermediate results. Highest FD however was recorded with 2% Sucrose + 200 ppm 8-HQC + 100 ppm GA3 on day 2, 4, 6, 8 and 10 (4.81, 5, 5.2, 5.5 and 5.8 respectively). On day 2, 4, 6, 8 and 10 the lowest FD was noted with control (3.5, 3.7, 3.7, 3.8 and 4.2 respectively). Among the different concentration of treatment combinations, 6% Sucrose + 50 ppm AgNo₃ recorded highest flower diameter and control recorded lowest flower diameter during entire vase life period. Full flower opening was significantly delayed with sucrose 6% + 50 ppm AgNo₃ (6.23), which was on par with sucrose 9% + 50 ppm AgNo₃ (5.12). The flowers held in control (3.82) were the earliest in full flower opening and the remaining treatments recorded intermediate values. The vase life of cut carnation flowers differed significantly with different sucrose treatments. The longest vase life was observed with sucrose 6% + 50 ppm AgNo₃ (11.98) which was on par with sucrose 9% + 50 ppm AgNo₃ (11.34) and sucrose 3% + 20 ppm AgNo₃ (10.29). Whereas, the treatment, control recorded significantly shortest vase life (6.69). The remaining treatments stayed on par with each other.