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Title: Studies on Photoperiodic Response in the Expansion of Blooming Period in Garden Chrysanthemum (Chrysanthemum morifolium Ramat)
Authors: Gupta, V N
Banerji, B K
Datta, S K
Issue Date: Jun-2006
Publisher: NISCAIR-CSIR, India
Abstract: Experiments were conducted at Floriculture Section of National Botanical Research Institute, Lucknow to study the photoperiodic response in the expansion of blooming period in Chrysanthemum morifolium Ramat. Thirty five cultivars were tested for their response to photoperiod by subjecting them to artificially created short- day (shading from 5 pm to 7 am) and long -day (additional lighting from 10 pm to 2 am). Ten of them were found to be sensitive, since short days hastened the blooming through extended night length while long-day treatment delayed it in all the 25 varieties. Maximum hastening 15 days was recorded in cv. 'Kundan' and 'Vijai' through extended night length (short days) from the normal blooming period and the plant exposed to extended day length (long day) for 30 days. Maximum delay in blooming (26 days) was absent in cv ‘Basant Bahar'. It is concluded that flowering in Chrysanthemum can easily be extended by the use of simple lighting and black out system not requiring temperature control.
Page(s): 61-65
ISSN: 0975-2412 (Online); 0771-7706 (Print)
Appears in Collections:BVAAP Vol.14(1) [June 2006]

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