Genetic mechanizm of evolution to non-bulb dormancy in bulbous plant.

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K05625
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 39030:Horticultural science-related
• Research Institution: University of Miyazaki
• Principal Investigator: Jun-ichiro Masuda 宮崎大学, 農学部, 准教授 (60452744)
• Co-Investigator(Kenkyū-buntansha): 比良松 道一 九州大学, 持続可能な社会のための決断科学センター, 准教授 (30264104)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: テッポウユリ / タカサゴユリ / 球根休眠性 / 適応進化

Outline of Final Research Achievements

The genetic mechanism of adaptive evolution from dormancy to non-dormancy in bulbous plant was investigated. Almost population in Lilium longiflorum showed dormancy. F1 hybrids obtained from L. flomosunum and L. longiflorum showed non-dormancy. Furthermore, it was demonstrated from distribution of dormancy in F2 hybrids that bulb dormancy was controlled by a few genes. It was suggested from these results, that a few genes involved in adaptive evolution from dormancy to non-dormancy.

Free Research Field

園芸学

Academic Significance and Societal Importance of the Research Achievements

これまで、球根休眠性の進化における遺伝機構について明らかにした研究はなく、世界で初めて球根休眠性の進化適応モデルを明らかにした点で学術的な意義が極めて大きい。また、今後、非球根休眠性に関連した遺伝子を同定する糸口にもなりうる基盤研究であり、球根休眠性を喪失させた新規ユリ品種を育成する上でも有用な情報を提供できる。