Research Report

Effect of Different Chemical Compounds on Leaf Chlorophyll Content and Postharvest Quality of Lilium  

Dhiman M.R. , Guleria M.S. , Chander Parkash , Raj Kumar
ICAR-Indian Agricultural Research Institute, Regional Station, Katrain, Kullu Valley, Himachal Pradesh- 175129, India
Author    Correspondence author
International Journal of Horticulture, 2015, Vol. 5, No. 18   doi: 10.5376/ijh.2015.05.0018
Received: 16 Oct., 2015    Accepted: 01 Dec., 2015    Published: 29 Dec., 2015
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Preferred citation for this article:

Dhiman M.R., Guleria M.S., Chander Parkash, and Raj Kumar, 2015, Effect of different chemical compounds on leaf chlorophyll content and postharvest quality of Lilium, International Journal of Horticulture, 5(18): 1-6 (doi:  10.5376/ijh.2015.05.0018)

Abstract

The effects of different chemicals treatment on postharvest cut flower quality of hybrid lily cultivar ‘Eyeliner’ were investigated. Lily stems were harvested when the first flower bud showed full colour. A whole stem (leaf and bud) sprayed with water (control) and with a growth regulator solutions containing TDZ (1 & 2 ppm), BA (25 ppm), GA3 (25 ppm), BA (50 ppm), GA3 (50 ppm), BA + GA3 (25 ppm + 25 ppm), BA + GA3 (50 ppm + 50 ppm), SAMRAS (2&4 ml·L-1), Agri-Herbo-99 (1 & 2 ml·L-1) and Super Gibbre (1 & 2 ml·L-1). After the treatments, each stem was then maintained for postharvest evaluation in an individual 500 ml conical flask with 300 ml of normal tap water.  Within each treatment, the numbers of buds per stem were kept constant as possible for ease of data recording. In general, BA alone or in combination with GA3 treatments significantly delayed the flower bud opening. Leaf yellowing and flower senescence was substantially delayed up to one week when cut flowers were sprayed with a solution containing TDZ (2 ppm). Application of BA @ 50 ppm significantly delayed total chlorophyll (a + b) degradation after 6 and 9 days. After 3 days sharp increase in total chlorophyll content was found when cut stems were sprayed with 1 ppm TDZ and slightly declined after 6 and 9 days. In conclusion, TDZ @ 2 ppm not only delayed leaf yellowing but also reduced onset of petal senescence in Lilium cut flowers. BA was able to delay the chlorophyll degradation.

Keywords
GA3; TDZ; BA; Leaf yellowing; Chlorophyll; Flower senescence; Lilium; Postharvest
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