Analysis of effects of repeated clonal propagation on growth and genome in rice

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K05521
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 39010:Science in plant genetics and breeding-related
• Research Institution: National Institute of Genetics
• Principal Investigator: NOSAKA-TAKAHASHI Misuzu (野坂実鈴) 国立遺伝学研究所, ゲノム・進化研究系, 助教 (20738091)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: イネ / 栄養繁殖 / 種子繁殖 / 低温

Outline of Final Research Achievements

Using perennial rice as a model, this study aimed to determine the effects of repeated clonal propagation on plant growth and genome. The main results of the study revealed that low temperature is one of the factors that induce growth suppression observed in clonal propagated plants. The results of this study suggest the importance of temperature management during the seedling stage in maintaining the yield of rice using clonal propagated plants.

Free Research Field

植物遺伝学

Academic Significance and Societal Importance of the Research Achievements

本研究成果の学術的意義としては、多年生イネをモデルに、長期栄養繁殖が植物の成長やゲノムに及ぼす影響を明らかにすることを目指し、栄養繁殖個体で見られる成長抑制についての知見を集めたことが挙げられる。社会的意義としては、本研究ではイネの栄養繁殖個体の収量維持には育苗期の温度管理の重要性を示唆する結果が得られ、今後の栄養繁殖を活用した省力型農業の発展に寄与する可能性がある。