Analysis for the rhythmic growth of rose flower by light signal aiming the development of postharvest technique for the control of the flower opening

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580055
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Horticulture/Landscape architecture
• Research Institution: Chubu University
• Principal Investigator: YAMADA Kunio 中部大学, 応用生物学部, 准教授 (30345871)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: バラ / 光刺激 / 花弁成長 / 発光ダイオード

Outline of Final Research Achievements

The aim of this research is to clarify the relation between light stimulus and rose petal growth and the mechanism of flower opening. Our results suggested the possibility that there were two steps for flower opening, one is circadian rhythm of 24 hours and the other is the movement by switching to light period from dark period. Our experiments using LED showed the sensitivity of the red light in rose petals was different from that of blue light, and the pathways of the red light signal and blue light signal were independently on flower opening. Western blot analysis for the protein related on petal growth suggested that cell wall loosening occurred during the dark period and opening of the gate of aquaporin resulted petal growth in the light period.

Free Research Field

園芸生理学