Institute of Vegetable and Floriculture Science, NARO

Quality Control Unit

In the Quality Control Unit, we are developing control technology, quality management of flowers, and innovative methods of using flowers in order to make flowers more familiar and enjoyable. Our main research subjects focus on (1) quality management of flowers, (2) control of flower aging, (3) control of floral scent emission, and (4) psychological and physiological effects with flowers. We are conducting research using methods such as psychology, plant physiology, molecular biology, bio-organic chemistry etc. So far, our main research achievements include the development of quality management technique of cut flowers that are sold with a vase- life guarantee, discovery of the gene that regulates the lifespan of flowers in the Japanese morning glory (Ipomoea nil), development of fragrance inhibitor in Lilium, and the development of brain function training program using flower arrangement.
(1) Quality management of flowers:In order to contribute in the expansion cut flower export and distribution of cut flowers with long vase life, we aim to develop quality management technology for cut flowers using plant growth regulators and environmental control such as temperature and humidity.
(2) Control of flower aging: There are many factors which shorten the vase life of cut flowers. Aging of the flower has become one of the main factors responsible for vase life shortening. By elucidating the mechanism of flower aging, we are aiming to develop the technology for prolonging the vase life of cut flowers.
(3) Control of floral scent emission: By elaborately analyzing the scent compounds, we aim to clarify the emission mechanism of floral scent. We will utilize the results for regulating the intensity of floral scent, improve sustainability of floral scent emission, and also to create new fragrant flowers.
(4) Psychological and physiological effects: In this field, human beings are the targets. We investigate neuroscientific, psychological and physiological effects during viewing flowers and engaging horticultural activities.


Unit Leader


Unit Members




Mariko KONDO