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

2014 Fiscal Year Final Research Report

• 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
• 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

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.

Free Research Field

園芸学