Clarification of gene flow between wild and cultivated rice in tropical Asian countries

• Project/Area Number: 26304020
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Science in genetics and breeding
• Research Institution: Kobe University
• Principal Investigator: ISHII TAKASHIGE 神戸大学, (連合)農学研究科(研究院), 教授 (20260648)
• Co-Investigator(Kenkyū-buntansha): 宍戸 理恵子 日本大学, 生物資源科学部, 准教授 (90307819) ; 石川 亮 神戸大学, (連合)農学研究科(研究院), 助教 (70467687) ; 野々村 賢一 国立遺伝学研究所, 大学共同利用機関等の部局等, 准教授 (10291890) ; 小出 陽平 京都大学, 学内共同利用施設等, 助教 (70712008)
• Research Collaborator: Nguyen Thi Lang ベトナムクーロンデルタ稲研究所, Dr. ; Phuong Dang Thai Phan ベトナムノンラム大学, Dr. ; Ouk Makara カンボジア農務省農業研究開発局, Dr. ; Tin Htut ミヤンマー農林潅漑省, Dr. ; Than Myint Htun イエジン農業大学, Dr.
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000); Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2014: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
• Keywords: 野生イネ / Oryza rufipogon / 遺伝子流動 / 遺伝的多様性 / 熱帯アジア / 海外学術調査

Outline of Final Research Achievements

In order to figure out the nature of Asian wild rice, Oryza rufipogon, natural wild populations were investigated in three tropical Asian countries, Vietnam, Cambodia and Myanmar. Based on the genetic variation among wild populations using molecular markers, genetic population structures of annual and perennial wild rice were found to vary according to the propagation manners and environmental conditions. Gene flow between wild and cultivated rice was detected using molecular markers on domestication traits. It suggests that frequency of the gene flow is mainly due to the plant distribution conditions.

Research Products

• [Int'l Joint Research] Yezin Agricultural University(ミャンマー)
• [Int'l Joint Research] Cambodian Agricultural R&D Institute(カンボジア)
• [Int'l Joint Research] Nong Lam University(ベトナム)
• [Int'l Joint Research] Cambodian Agricultural R&D Institute(カンボジア)
• [Int'l Joint Research] Yezin Agricultural University(ミャンマー)
• [Journal Article] Evaluation of genetic variation among wild rice populations in Cambodia (2015)
  • Author(s): Orn C, Shishido R, Akimoto M, Ishikawa R, Htun TM, Nonomura KI, Koide Y, Sarom M, Vang S, Sophany S, Makara O, Ishii T
  • Journal Title: Breeding Science Volume: 65 Issue: 5 Pages: 430-437
  • DOI: 10.1270/jsbbs.65.430
  • NAID: 130005114134
  • ISSN: 1344-7610, 1347-3735
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Evaluation of genetic variation among rice local and modern varieties in Cambodia (2014)
  • Author(s): Chhourn C, Ishikawa R, Sophany S, Makara O, Ishii T
  • Journal Title: Journal of Crop Research Volume: 59 Pages: 37-41
  • NAID: 110009843959
  • Peer Reviewed
• [Presentation] Evaluation of genetic variation among wild and cultivated rice in Cambodia (2015)
  • Author(s): Orn C, Shishido R, Akimoto M, Ishikawa R, Htun TM, Nishioka R, Sarom M, Sophany S, Makara O, Ishii T
  • Organizer: 日本育種学会第128回講演会
  • Place of Presentation: 新潟大学（新潟県・新潟市）
  • Year and Date: 2015-09-12
• [Presentation] Evaluation of genetic variation among wild rice populations in Cambodia (2015)
  • Author(s): Orn C, Shishido R, Kageyama H, Akimoto M, Ishikawa R, Ouk M, Men S, Ishii T
  • Organizer: 日本育種学会第127回講演会
  • Place of Presentation: 玉川大学
  • Year and Date: 2015-03-22