|
KMID : 0903619930340060446
|
|
Journal of the Korean Society for Horticultural Science
1993 Volume.34 No. 6 p.446 ~ p.453
|
|
|
Effect of Temperature and Light on Growth and Flowering of Potted Plant Production of Platycodon
|
|
정순경/Chung, Soon Kyung
송천영/Roh, Mark S ./Lawson, Roger H ./Song, Cheon Young
|
|
|
Abstract
|
|
|
|
Growth and flowering responses of five Platycodon grandiflorus (Jacq.) A. DC., cultivars as influenced by sowing time, temperature, supplemental lighting, and photoperiod were investigated. ´Sentimental Blue´ flowered in less than 149 days at 17/15C, day/night. Flowering of ´Sentimental Blue´ was earliest as compared to ´Hime Murasaki´, ´Midget White´, ´Midget Blue´, and ´Hakone Blue´. As forcing temperature was increased from 17/15 to 25/23C, flowering of ´Sentimental Blue´ was accelerated and the number of shoots, leaves, and flowers was increased. Plant height of ´Sentimental Blue´ was the shortest and ranged from 10 ㎝ to 14 ㎝. Flowering was mainly controlled by temperature, with an optimum temperature of 21/19C. Supplemental lighting and a long-day photoperiod did not affect flowering. The number of shoots and flowers was, however, increased. ´Sentimental Blue´ is considered an ideal cultivar for potted plant production. Plants can be forced in 140 days from seed sowing.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|