다섯가지 초본성 조경식물의 생육상에 따른 적산온도 비교

Analysis of Accumulated Temperature According to Growth Stage of 5 Herbaceous Landscape Plants

This study evaluated the accumulated temperature necessary to predict the flowering time of Dicentra spectabilis (L.) Lem., Mukdenia rossii (Oliv.) Koidz., Pulsatilla dahurica (Fisch. ex DC.) Spreng., Lychnis x arkwrightii, and Aster koraiensis Nakai. Plants were collected from experimental field located at the National Institute of Horticultural and Herbal Science in March 2013. They were transplanted in a container (30×30×30cm) filled with horticultural mix and arranged outdoors and in a greenhouse with 4 repeated sections. To determine the accumulated temperature for each growth stage, we measured the sprouting, foliation and flowering date every week and experimental site temperature also recorded. On averaging the accumulated temperature in a greenhouse and outdoors, these of 5 landscape plants according to the growth phase were as follows; For D. spectabilis, 176.3±9.12℃ at sprouting, 265.1±47.63℃ at foliation and 476.1±112.43℃ at full bloom; for M. rossii, 170.0±32.56℃ at sprouting, 352.8±176.84℃ at sprouting and 452.3±17.74℃ at full bloom; for P. dahurica, 152.0±7.17℃ in sprouting, 266.2±54.36℃ at sprouting and 410.4±41.58℃ in at full bloom; for L. cognata, 186.1±22.9 2℃ in sprouting, 205.8±16.92℃ at sprouting and 1426.6±135.99℃ at full bloom; and for A. koraiensis, 163.5±9.02 in sprouting, 190.6±4.55 at sprouting, and 2714.9±88.97 at full bloom.