Weed ecological studies on the range expansion and hybridizationof cogongrass, a perennial grass weed, resulted from globalwarming

2012 Fiscal Year Final Research Report

• Project/Area Number: 21380015
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Crop science/Weed science
• Research Institution: Kyoto University
• Principal Investigator: TOMINAGA Tohru 京都大学, 大学院・農学研究科, 教授 (10135551)
• Project Period (FY): 2009 – 2012
• Keywords: 雑草科学 / 温暖化 / チガヤ / 分布変化 / 雑種形成

Research Abstract

The common ecotype of cogongrass, a perennial grass, is distributed in southern parts of Tohoku region and southward, Japan and the early ecotype is mainly in northern parts of Tohoku region and Hokkaido. The common and early ecotypes collected in early 1980’s and 2009 to 2011 in Tohoku region were distinguished by GOT zymogram and trnL-F region polymorphism of chloroplast DNA to clarify range expansion of the common type resulted from global warming. The hybrids between the common and early ecotypes were widely distributed in northern parts of Tohoku region

Research Products

• [Presentation] Range expansion of hybrids between two ecotypes of cogongrass (Imperata cylindrica (L.) Beauv.) in northern Japan (2012)
  • Author(s): Tohru Tominaga
  • Organizer: The 6th International Weed Science Congress
  • Place of Presentation: The New Century Grand Hotel, Hangzhou, China
  • Year and Date: 20120617-0622
• [Presentation] チガヤ種内2型とそれらの雑種の日本における分布 (2012)
  • Author(s): 三好郁哉、三浦励一、下野嘉子、冨永達
  • Organizer: 日本雑草学会第51回大会
  • Place of Presentation: つくば市農林水産技術会議筑波事務所
  • Year and Date: 2012-04-05
• [Presentation] Range expansion and hybridization between two ecotypes of cogongrass (Imperata cylindrica (L.) Beauv .) in Japan (2011)
  • Author(s): Ikuya Miyoshi, Reiichi Miura and Tohru Tominaga
  • Organizer: 23rd Asian-Pacific Weed Science Society Conference
  • Place of Presentation: The Sebel Cairns, Cairns, Australia
  • Year and Date: 20110926-0929
• [Presentation] ガヤ普通型および早生型の雑種の生育 (2011)
  • Author(s): 三好郁哉、三浦励一、冨永達
  • Organizer: 日本雑草学会第50回大会
  • Place of Presentation: 東京大学農学部
  • Year and Date: 2011-04-02
• [Remarks] (1)冨永達、温暖化による雑草の分布変化‐イネ科多年生雑草チガヤの例‐、京都大学附属農場第16回公開講座「環境と農業」(招待講大阪集団2大阪集団1 演)、2012 年 11 月 3 日、高槻市京都大学附属農場
• [Remarks] (2)冨永達、緑化植物としてのイネ科多年生草本チガヤの生育特性、緑地雑草科学研究所第4回シンポジウム(招待講演)、2012 年 10月 31 日、愛知県名古屋市産業労働センター