Exploration of breeding materials with resistance to environmental stress in the genetic resources of endemic Hydrangea species

• Project/Area Number: 24580049
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Horticulture/Landscape architecture
• Research Institution: The University of Shiga Prefecture
• Principal Investigator: UEMACHI Tatsuya 滋賀県立大学, 環境科学部, 准教授 (40243076)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: アジサイ / 遺伝資源 / 強光耐性 / 乾燥耐性 / 系統解析 / レトロトランスポゾン / ITS配列 / トランスクリプトーム解析 / 耐干性 / 耐強光性

Outline of Final Research Achievements

In this study, we analyzed phylogenetic relationships of Hydrangea macrophylla and H. serrata distributed in Japan and assessed their tolerances to the excessive solar radiation and drought for breeding of hydrangea cultivars with strong resistance to environmental stress. This study revealed the following; 1) Kubiki Mountains are one of the borders of geographical distribution between H. serrata var. serrata and var. yesoensis.; 2) Natural crossing between H. macrophylla and H. serrata occurs in Izu Peninsula; 3) H. serrata var. yesoensis as well as H. macrophylla were deeply involved in development of old hydrangea cultivars; 4) Some wild H. macrophylla plants from Hachijojima Island and Aogashima Island showed tolerance to the excessive solar radiation; There are two types of symptom on the leaves induced by the excessive solar radiation and some wild H. macrophylla plants showed tolerance to intensive radiation.

Research Products

• [Presentation] フローサイトメトリーによるガクアジサイとヤマアジサイの核DNA含量の比較 (2015)
  • Author(s): 上町達也・柴田彩佳・竹内俊輝
  • Organizer: 園芸学会
  • Place of Presentation: 千葉大学
  • Year and Date: 2015-03-28 – 2015-03-29
• [Presentation] ．伊豆半島に自生するガクアジサイ及びヤマアジサイのITS配列に基づいた系統解析 (2014)
  • Author(s): 上町達也・樹下眞人・柴田彩佳
  • Organizer: 園芸学会
  • Place of Presentation: 佐賀大学
  • Year and Date: 2014-09-27 – 2014-09-29
• [Presentation] ガクアジサイおよびヤマアジサイの光合成特性と強光耐性 (2014)
  • Author(s): 上町達也・橋井望・樹下眞人
  • Organizer: 園芸学会
  • Place of Presentation: 筑波大学
• [Presentation] 頸城山塊周辺に自生するヤマアジサイ及びエゾアジサイの系統解析 (2013)
  • Author(s): 上町達也・樹下眞人・千頭航
  • Organizer: 園芸学会
  • Place of Presentation: 岩手大学
• [Presentation] ITS配列に基づいたアジサイ古品種の系統解析 (2013)
  • Author(s): 上町達也・橋井望・樹下眞人
  • Organizer: 園芸学会
  • Place of Presentation: 岩手大学
• [Presentation] 北陸地方に分布するヤマアジサイの系統解析 (2012)
  • Author(s): 上町達也・千頭航・林佑里子
  • Organizer: 園芸学会
  • Place of Presentation: 福井県立大学