国立研究開発法人 国際農林水産業研究センター | JIRCAS

Effects of Long-Day Treatment Using Fluorescent Lamps and Supplemental Lighting Using White LEDs on the Yield of Cut Rose Flowers

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

During arching cultivation of roses in autumn and winter, long-day treatment using fluorescent lamps placed above the base of the plants slightly increased the number of cut flowers and also tended to increase the cut flower length in the first year. To further investigate these effects, the light condition of assimilation shoots was modified by supplemental lighting using white light-emitting diodes (LEDs) placed above the assimilation shoots. Supplemental lighting at two different levels of photosynthetic photon flux density (PPFD), 100 and 250 μmol m?2 s?1, increased the number of cut flowers from the middle portion of the assimilation shoots, and the total number and weight of cut flowers according to the light intensity. Irradiation at 250 μmol m?2 s?1 PPFD also increased the number of cut flowers over 80 cm long and the length, weight and stem diameter of cut flowers over 60 cm long. Long-day treatment using fluorescent lamps did not affect the number of cut flowers in the second year. These results indicate that long-day treatment using fluorescent lamps can effectively increase the yield of cut rose flowers in some years, while supplemental lighting using white LEDs for assimilation shoots is a method of increasing it more strongly.

刊行年月2014-10-01
作成者HARADA TaroKOMAGATA Tomoyuki
著者キーワード

assimilation shoots

cut flower quality

Rosa hybrida

公開者Japan International Research Center for Agricultural Sciences
データ作成日2014-10-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
48
4
開始ページ443
終了ページ448
DOI10.6090/jarq.48.443
権利Japan International Research Center for Agricultural Sciences
言語eng