Delay of Flowering at High Temperature in Chrysanthemum: Duration of Darkness and Transitions in Lighting Determine Daily Peak Heat Sensitivity

• Published in: Horticulture journal Vol. 89; no. 5; pp. 602 - 608
• Main Authors: Nakano, Yoshihiro, Takase, Tomoyuki, Sumitomo, Katsuhiko, Suzuki, Shihori, Tsuda-Kawamura, Kana, Hisamatsu, Tamotsu
• Format: Journal Article
• Language: English
• Published: Tokyo The Japanese Society for Horticultural Science 01.01.2020; Japan Science and Technology Agency
• Subjects: Biological clocks; Chrysanthemum; Chrysanthemum morifolium; Circadian rhythm; Circadian rhythms; Darkness; Delay; Flowering; flowering delay; Flowers; Heat; heat sensitivity; High temperature; Light; Light effects; night temperature; photoperiod; Photoperiods; Sensitivity; short-day

Heat-induced flowering delay of Chrysanthemum morifolium is a major problem affecting the production of cut flowers in Japan. Understanding the delay mechanism is indispensable to achieve stable production. Heat sensitivity has been shown to fluctuate throughout the day, as if it is regulated by a c...