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

2016 Fiscal Year Final Research Report

• 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
• Keywords: 野生イネ / Oryza rufipogon / 遺伝子流動 / 遺伝的多様性 / 熱帯アジア

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.

Free Research Field

植物育種学