Initial Growth Responses of Four Woody Plants for Indoor Landscaping according to Irrigation Frequency
관수주기에 따른 실내녹화용 목본식물 4종의 초기 생육반응

Kei-Jung Kwon, Bong-Ju Park
2017 Journal of the Korean Institute of Landscape Architecture  
The purpose of this study was to investigate the effects of light intensity on the initial growth response of three woody plants for indoor landscaping; Ardisia pusilla, Clusia rosea and Fatsia japonica. The plants were planted in 10cm pots, the light intensities used were of four levels-15, 30, 60, 120µmol․m -2 ․s -1 PPFD-and light irradiation time was set to 12/12 (day/night). Growth responses including plant height, leaf length, leaf width, chlorophyll fluorescence (Fv/Fm), SPAD and Hunter
more » ... , SPAD and Hunter values were measured at 4-week intervals, and shoot weight and root weight of fresh and dry plants were measured after completion of the experiment. Fatsia japonica tended to show greater leaf length and leaf width as light intensity became greater, while other plants did not show any significant differences at different light intensities. The Fv/Fm value of the Ardisia pusilla was found to be stressed at 60 and 120µmol․m -2 ․s -1 , while the Fv/Fm values were within normal range with other plants or at other light intensity levels to show no stress. Only Clusia rosea showed significantly different SPAD values at 120µmol․m -2 ․s -1 , and there was no significant SPAD value difference found with other plants or at other light intensity levels. While Hunter values of the Ardisia pusilla did not show any significant differences at any light intensity levels, Clusia rosea and Fatsia japonica showed specificity in L, a and b values at 60 and 120µmol․m -2 ․ s -1 , respectively. Ardisia pusilla showed a big stem growth at 120µmol․m -2 ․s -1 , and Clusia rosea showed a steady growth at 60 and 120µmol․m -2 ․s -1 .
doi:10.9715/kila.2017.45.1.028 fatcat:vmekxuf6wje73hvnwmbpmignly