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Effect of Pulsing Solution and Duration on Post-Harvest Longevity of Asiatic lily CV. Black Out

An experiment was carried out in the experimental laboratory of Department of Horticulture, Assam Agricultural University, Jorhat during January-February, 2016-2017 to study the effect of pulsing solutions on post-harvest life of lily flowers. Lily stems were harvested when the first flower bud showed full color. The experiment was laid out in Completely Randomized Design with 6 treatments and 2 pulsing duration (12 h and 24 h), replicated 3 times. The pulsing treatments were P0 (distilled water), P1 (10% sucrose), P2 (100 ppm AgNO3), P3 (10% sucrose+100 ppm AgNO3), P4 (50 ppm BA) and P5 (10% sucrose+50 ppm BA). After the treatments, each stem was maintained for postharvest evaluation in an individual 300 ml conical flask with 100 ml of 2% sucrose solution. Within each treatment, the number of buds per stem was kept constant as possible for ease of data recording. Pulsing of cut stems with 10% sucrose and 50 ppm BA (P5) for 24 h was observed to be best in terms of vase life (13.00 days), quality and biochemical parameters viz., uptake of pulsing solution (6.21 ml/stem), higher rate of vase solution uptake (15.48 g/stem), fresh weight (125.30%), flower diameter (17.67 cm), total chlorophyll content (1.17 mg/g FW), and total soluble solid (4.45⁰Brix). However flower stems were pulsed with 10% sucrose and 100 ppm AgNO3 for 24 h gave the maximum bud length (8.27 cm) & highest reducing sugar (5.18%) in tepals. Thus considering the positive effects on vase life of lily cut flowers, 10% sucrose and 50 ppm BA for 24 h could be considered as the best combination for pulsing solution.

Author(s): Kongkana Gogoi, Sunil Bora, Madhumita Choudhury Talukdar

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