2004 Volume 3 Issue 1 Pages 63-66
For the purpose of systematic production in an open field, small-flowered chrysanthemums responding to day-length were selected from cultivars of the July-flowering type, and the possibility of shipping during the peak demand period facilitated by the night-break lighting treatment was examined.
1. Small-flowered chrysanthemums of 13 cultivars responding to day-length were selected from 14 cultivars that flowered in July under natural conditions. When 8 small-flowered chrysanthemum cultivars responding to day-length were planted on April 19th with night-break lighting treatment discontinued on June 11th, 4 small-flowered chrysanthemum cultivars flowered in early August, fulfilling high consumer demand.
2. Systematic production of the combined small-flowered chrysanthemum which flowers in July under night-break lighting facilitated shipping in time for the Lantern festival, because the annual difference in the response period for flowering after the night-break lighting treatment was small.
3. The flowering response period after night-break lighting treatment during the high-temperature season from June to August fluctuated in proportion to changes of the natural day-length. This result suggested the possibility of shipping for the equinoctial week as well as continuous shipping of the same cultivar.
